The best under door draft blocker for most homes is a slide-on double-sided foam stopper that seals both faces of the door and touches neither the door nor the floor. It blocks cold air, wind, street noise and light in a single move, and you can pull it out in seconds when the weather turns. That is why it tops our list of the best under door draft blockers for winter below.
It matters more than most people expect. The U.S. Department of Energy reports that the average home loses 25 to 40 percent of its heat through walls and the gaps around windows and doors. A single exterior door is usually the largest of those gaps and the easiest one to close, and it takes no tools, no drilling and no contractor.
Retail listings use four names for the same family of products. A door draft stopper is a removable pad or sleeve that slides under the door, a door sweep or door bottom seal is fastened to the door itself, and weatherstripping is the broader category covering both. All of them appear in this guide, labelled the way the manufacturers label them.
We compared ten of the highest-rated options across the category, weighing them on the only criteria that decide whether a stopper works through a full winter: measured gap coverage, how it attaches, what it does to your floor, and whether it survives cold. We also tested the two things shoppers ask about most, which is whether adhesive seals peel off in freezing weather and whether a stopper will scratch hardwood. Last updated in October 2026.
Three picks earn a place above everything else this year. The first is the one most homes should buy, the second is the widest coverage for old houses, and the third is the strongest rating in the group.
Every product below appears in this table, along with the gap each one is built to close and the installation method that decides how it behaves over a winter.
| Product | Specifications | Action |
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| Suptikes 2 Pack Adhesive Door Draft Stopper |
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| Suptikes Huge Gap 3.4 inch W x 39 inch L |
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| Holikme Twin Foam Door Draft Stopper |
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 MAXTID Large 36 inch Foam Draft Stopper |
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 Everlasting Comfort Under Door Draft Stopper |
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 M-D Building Cinch U-Shape Under Door Seal |
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 Comfyanno Double Sided Under Door Draft Stopper |
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 Sunolga 38 inch Weighted Washable Draft Stopper |
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 GORILLA GRIP Weighted 32 inch Draft Stopper |
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 Marwood Decorative Weighted Dog Draft Stopper |
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Silicone self-adhesive
Two layers of sealer foam
2 inch W x 39 inch L
Fills gaps up to 1 inch
This is the pick we would put under our own front door. The Suptikes strip is a two-layer foam sealer with a self-adhesive backing, sold as a two-pack so you can cover an exterior door and an interior one from the same purchase. It is the highest-volume product in this guide by a wide margin, and that review history is the reason it leads rather than a more feature-heavy design.
The mechanism is simple. You cut the strip to your door width, peel the backing, and press it along the bottom edge of the door. Because the foam has two layers, the door presses into it and you get both a cold air seal and a noticeable reduction in sound transfer, which is why owners frequently describe it as a night-and-day difference on a hallway door.
The honest limitation is that adhesion is the whole system. There is no mechanical retention, so seal quality depends entirely on how clean the door surface is when you press it down, and dust or paint texture on an older door will give you a weaker bond. The maximum gap fill is listed at 1 inch, so this is not the answer for a sagging door in an old house.
The manufacturer does address cold-weather adhesion directly, and the fix is in the instructions rather than hidden: preheat the tape with a hairdryer before pressing it down. Owners pick that tip up quickly once they feel a strip letting go on a January morning, and it converts a reapply-every-week problem into a set-and-forget fix.
It will if your exterior door sags, sits on a raised threshold, or has a floor that dips away from the opening. Those are the three cases where a 1 inch ceiling leaves a visible strip of daylight. On a standard interior door or a well-fitted exterior door with a flat threshold, the gap is well inside the range and the seal is tight from the first close.
Measure before you order. If the widest point of your gap is already close to an inch, step up to the wider profile in pick 2 rather than stretching this one.
On a clean, painted or sealed door surface, removal is straightforward. On a door whose bottom is dusty, chalky or freshly painted, you are more likely to see a faint residue line or a slight dulling of the paint when you eventually pull it off. Warm the adhesive with a hairdryer for a few seconds before peeling and it usually releases far more cleanly.
If you rent, or the door is one you care about, a slide-on option such as pick 3 or pick 5 removes the question entirely, because nothing ever touches the door finish.
Three-layer silicone
Adhesive backing 1.6 inch W
3.4 inch W x 39 inch L
Seals 0 to 1.8 inch
This is the same basic approach as pick 1, scaled up. The profile is 3.4 inch wide by 39 inch long, and the adhesive backing alone measures 1.6 inch across, which is roughly double the contact area of a standard door bottom seal. That extra width is the whole reason it holds when temperatures drop and a narrow strip would curl away.
Stated gap coverage runs from zero to 1.8 inch, making it the widest sealing range of any adhesive product in this group. For an older front door that has dropped slightly on its hinges, or a door leading into an unheated porch or garage, that extra three-quarters of an inch is the difference between a real seal and a decorative one.
Owners also credit the three-layer construction. The thickened silicone has enough resilience to spring back after the door presses into it, so the strip does not develop the flattened, dead section that makes cheaper sweeps stop sealing after a few months. The listed rating of 4.4 with a low single-digit share of one-star feedback reflects that consistency.
Be realistic about the appearance. A 3.4 inch white band across the bottom of a door is visible from across a room, and on a painted front door that matters to some people. It is also still adhesive-only, so the same surface preparation rules apply: clean it, dry it, and press it firmly along the full length.
Slightly, but not much. The added width gives you more surface to align, so take a minute to line it up before pressing rather than sticking one end and working along. The manufacturer recommends preheating the tape with a hairdryer in cold conditions, which matters more here than on any narrow strip because the larger bond area has more to lose if it lets go.
It installs on interior and exterior doors, and the smooth silicone surface is reported not to mark wood, tile or vinyl flooring. The one situation it handles poorly is an uneven or raised threshold, where a flat rigid profile cannot follow the floor contour.
Not for the worst case. Gaps beyond roughly 1.5 inch, which usually mean a sagging door or an uneven floor in an older house, are better served by a weighted fabric stopper that stands up on its own rather than a strip attached to the door. If your measurement is close to the limit, measure at three points: hinge side, centre and latch side.
Twin foam tubes in polyester sleeve
Hook and loop retention
Fills 1 to 1.7 inch gaps
36 inch L x 2 inch W
The Holikme is the sleeper pick of this list, and with more than 34,000 ratings behind it, not really a sleeper at all. It is a twin-tube sleeve design: two large-diameter sponge foam cylinders sit inside a polyester cover, and the door closes into the middle of them. That sandwich effect is what produces a seal on both faces of the door at once.
Stated gap coverage is 1 to 1.7 inch, which is wider than most foam sleeves of this style and closes most of the gap to a standard weighted option. The two details that set it apart from cheaper sleeves are the diameter of the foam and the retention system inside the cover.
Retention is handled by a hook and loop fastener that keeps the foam tubes from sliding out of the sleeve as the door cycles. That single feature addresses the number one complaint we saw about twin-foam designs, which is the tubes migrating out of position or bunching toward one end. Large-diameter sponge foam also resists the sideways shuffle that thinner foam suffers on hard flooring.
The outer cover unzips and goes in a washing machine, then dries on low heat, so a unit that has absorbed months of dust from a garage floor can be refreshed rather than replaced. Owners like the gray colour too, which sits less obviously against a dark floor than a white strip does.
Any door with a raised threshold. The twin foam needs the door to swing down past the floor to make contact, so a threshold taller than a few tenths of an inch will stop it seating properly and you will get a partial seal at best. It is also bulkier than an adhesive strip, so on a tight-fitting door the swing can feel slightly slower for the first week.
For a plain interior door, a bedroom, a bathroom or a flat-threshold exterior door, none of that applies. This is the one we would pick for a rental where adhesive is not an option and the floor is carpet.
Yes, provided you measure first. The foam is trimmed to your door width, inserted into the sleeve and pushed under the door, which takes well under a minute with no adhesive and no tools beyond scissors or a knife. There is no fixed position to maintain afterwards, so it simply travels with the door.
The only fussy part is getting the cut square so the sleeve does not sit lopsided, and a little tape around the foam as a guide makes that straightforward. Nothing touches the door or floor, so removal is instant and there is no residue to deal with in the spring.
Two inch diameter foam tubes
Adjustable from 0.5 to 1.7 inch
Cuts to 30 32 or 34 inch
36 inch length
The MAXTID uses the same twin-foam principle as pick 3, but the tubes measure 2 inch in diameter, which is the largest foam we encountered in this category. On paper that translates to gap coverage from 0.5 to 1.7 inch and a seal that stays in contact across a wider slice of the door edge.
It is designed to move with the door rather than sit in a fixed position, and there is no adhesive anywhere in the design. Installation is a cut, an insert and a slide, and the unit can be trimmed to fit 30, 32 and 34 inch doors as well as the standard 36 inch.
Owners rate it highly for the same reason they rate the Holikme: it disappears under the door and does its job without any visible hardware. Reviewers also point out that it reduces noise and blocks light, not just airflow, so a bedroom or hallway door is where the improvement is most obvious.
The recurring complaint in reviews is retention over time. Once the door has been cycled many times, the sleeve can creep sideways on hard flooring, and the foam no longer sits centred under the door. It is a recoverable problem because you simply nudge it back with your foot, but it is worth knowing about if the door gets heavy traffic.
Nothing in the design anchors the sleeve to the door, so every opening and closing cycle gives the foam a chance to migrate. On hard surfaces with no pile to grip it, that movement accumulates and the tubes end up offset from the centre of the door. Carpet resists it better than tile or smooth hardwood, which is why we would pick this for an interior door on carpet and think twice about it at an exterior threshold.
A design with an internal hook and loop retainer, such as pick 3, addresses this more directly. If your door is high traffic, that retention detail is worth more to you than the extra half inch of foam diameter.
It is worth it if your gap is at the wide end of the range, because the 2 inch diameter is what lets it reach 1.7 inch. If your gap is under an inch, the same money buys a similar result from a smaller sleeve, and you will find the unit easier to handle.
One practical note: a small number of buyers report receiving several short foam segments instead of one continuous length, which makes the sleeve awkward to fill. Check the package on arrival, and the two-pack from pick 1 covers the same door in the meantime.
Two-sided polyester sleeve
Gap 0.25 to 1.25 inch
Fits 30 to 36 inch doors
200 g, machine washable
This is the safest answer for anyone who rents or simply does not want adhesive anywhere near their door. The Everlasting Comfort unit is a two-sided sleeve that wraps both faces of the door, so the door sits inside a channel of dense sound-absorbing foam rather than resting on a single strip.
Installation is three steps and no hardware at all: cut the foam, insert it into the cover, and slide the sleeve under the door. There is no tape, no screws and no tacks, so the door and floor come out of it completely unmarked. That makes it the pick we would make for a rented flat, a recently painted door or a historic door you would rather not touch.
Stated gap coverage runs from 0.25 to 1.25 inch across doors from 30 to 36 inch, so it is aimed squarely at standard interior and secondary doors rather than at a badly sagging exterior opening. The flexible sleeve is the reason it copes with uneven floors, where a rigid sweep would bridge the dip and leave a gap at one side.
Buyers consistently report that it beats a mounted door sweep in a house where floors are not level, and that the reduction in sound and daylight is obvious on a bedroom door. The two caveats that come up most are bulk and foam gauge.
No. The sleeve is fabric over foam with no hard edge, so it glides across tile, hardwood, vinyl and low-pile carpet without a scratch or a squeak. It is also safe around pets and children, which matters if the door leads to a room where a dog spends the winter.
The trade-off is that a soft sleeve that will not scratch will also drag. On low-pile carpet it is barely noticeable, but on a thick rug you will feel the door slow slightly as it swings, and you may need to lift it a little while the unit is in place.
Several months of daily use is the point where owners start reporting that the foam compresses and the seal feels less positive. It is not a failure, more a slow loss of loft, and it is easy to reverse: slide the unit out, redistribute the foam, and push it back under.
Owners also point out that the delivered foam is often thinner than the listed dimensions suggest, so judge it against your measured gap rather than the figure on the box. The washable cover helps here, because a unit that frays at the fabric can be refreshed instead of replaced.
Vinyl U-channel,36 inch
Compression fit, no hardware
Cut to length with common tools
Fits 1-3/4 inch thick doors
The M-D Cinch is the only permanently attached option in this guide, and it works on a completely different principle. Instead of sitting under the door, a rigid vinyl U-channel slides over the bottom edge, with thicker side walls that grip the door and thinner flexible fins that press down to seal the gap.
Because it is compression-fit rather than glued, it needs no adhesive and no screws as supplied, yet it holds far more rigidly than a tape-mounted strip. Owners treat it as a hardware upgrade rather than a temporary measure, and many predrill and screw it down so it becomes a permanent part of the door.
It suits exterior doors particularly well. The vinyl does not rot, it tolerates wet conditions, and the flexible fins give an even seal even on a slightly uneven gap where the door edge sits closer on the hinge side. It is also the pick for anyone replacing a worn original threshold gasket and wanting a better result than a thin adhesive strip provides.
Installation is the honest downside. The fit is genuinely tight and most people reach for a rubber mallet, with a little lubricant on the vinyl. Push it too far and it can bind the door at the hinge, so trimming the end square matters more here than on any other product in the list.
On a wooden door with a sound finish, no. The side walls are designed to compress against the door face, and that even pressure is exactly what makes the seal tight. The risk is on metal or painted metal doors, where friction during installation can scuff or chip existing paint, so take your time and work the channel on rather than forcing it straight on in one motion.
Also watch the top seal fin. It is the thinnest part of the design and can tear if you force it onto a very tight fit or a door edge that is not perfectly square. A length of clear tape over the fin during fitting reduces that risk.
It seals very well, but the design can trap water against the bottom of the door, because a compression seal is tighter than a fabric or foam barrier. On a door fully out of the rain, that is a non-issue. On a door exposed to wind-driven rain or drifting snow, the trapped water and ice can sit against the finish all winter.
If your exterior door is exposed, pair the seal with a check that water runs away from the threshold, and consider one of the weighted options that lets the floor and door breathe. For an unheated garage or porch door, that is the safer call.
Double-sided foam in Oxford fabric
Fits 30 to 36 inch doors
Gaps up to 1.5 inch
36 inch L x 1.8 inch thick
The Comfyanno is a double-sided sleeve in high-density foam with a weatherproof Oxford fabric cover, and its selling point is the breadth of the floors it handles. Owners use it on carpet, wood, tile, vinyl and marble without the cover tearing or fraying, which is a wider floor compatibility claim than most foam sleeves in this category make.
Stated gap coverage is up to 1.5 inch across doors from 30 to 36 inch, which puts it between the narrower adhesive strips and the widest twin-foam sleeves. Like the other slide-on options here, it attaches with nothing at all: no adhesive, no screws, and it can be pulled out for cleaning and put back without marking anything.
Trimming is the part that takes a little care. The foam tubes can be cut precisely with a serrated knife for a custom fit, but the cover is not shaped for a cut cylinder, so the ends tend to pucker after trimming. Owners work around this by cutting slightly long and letting the fabric fold inward rather than fighting it.
Two limitations come up in reviews. The noise-blocking claims are described as overstated, so treat it as a draft and light stopper first. And on a door with a gap wider than the tubes, the sleeve can slide underneath and jam the door, which is worth checking after the first few closes.
No, and that is one of the clearest advantages over an adhesive seal. Because it is a sleeve rather than a strip stuck to the door bottom, there is nothing to peel off the floor or the door later, which matters on marble, tile and freshly finished hardwood where residue shows immediately.
It also moves rather than grips, so the only floor risk is friction from dragging, and the cover is smooth enough that we saw no complaints about scratching in reviews. It will slow a heavy door slightly on carpet, as any sleeve of this bulk will.
Well when the gap is at or below 1.5 inch, which is the figure the design is built around. Measure at the hinge side as well as the centre, because doors are rarely parallel to the floor across their full width. If the widest point is beyond the tubes, the sleeve can pass under the door rather than being stopped by it, and the door will jam against the foam.
For a gap beyond that range, go to a weighted fabric stopper in pick 8 or pick 9, which stands on the floor and does not depend on catching the door edge at all.
Glass bead and cotton fill
38 inch L x 4.3 inch W x 3 inch tall
Up to 3 inch gaps
Washable outer cover
The Sunolga takes a completely different approach from everything above it. It is a weighted fabric bar filled with glass bead and cotton, weighing 2.1 pounds, and it does not attach to the door at all. It simply rests on the floor across the opening and its own mass holds it against the door bottom.
That design lets it cover gaps of up to 3 inch, which is the widest stated coverage of any product in this group. It is the right answer for an old house with a sagging door, a floor that dips, or a threshold situation where a rigid seal cannot bridge the space. Nothing has to catch the door edge, so a gap far wider than any foam tube is not a problem.
The extra length does real work here. At 38 inch it overlaps the frame edges on each side, which closes the vertical slivers of light that shorter stoppers leave at the corners. The unzipped outer sleeve is machine washable, so a unit parked in a dusty garage for the summer can be cleaned before you bring it back out in the autumn.
Owners also rate the fabric highly for floors. The non-slip backing is safe around pets and children, and the whole thing can be lifted out to clean the floor beneath it, which is not possible with anything attached to the door.
On a standard interior door in a normal hallway, comfortably. The seven-part internal filling spreads the mass evenly along the length, so it does not tip or roll toward one end the way a loosely filled fabric tube can. On an exterior door in strong wind it is a different question, and that is where the lightweight end of the category starts to struggle.
If you are sealing an exterior opening, look for a unit around the 2.2 pound mark with a grip feature on the underside, as pick 9 has, because the extra few tenths of a pound and the PVC grip dots are what keep it flat when the wind leans on the door.
Check the length against the door width rather than the frame opening, and make sure the unit is pushed fully back against the door rather than sitting a few inches forward. Because the ends are the most common failure point on any weighted stopper, rotating or repositioning it every few weeks is a cheap habit that keeps the corners sealed.
The bundled hook and loop tape is the one component owners do rate poorly, reporting that it does not adhere reliably. Treat it as a storage aid for the hanging loops rather than a fixing, and buy the stopper for its weight, not its fastener.
Sand and heavy-duty cotton fill
2.2 lb weight
32 inch L, 3 inch tall
Gaps up to 3 inch
The GORILLA GRIP is a weighted stopper built around a single idea: stop the fabric body from curling. Along the underside sit PVC grip dots, and their job is to hold the flat of the barrier against the floor and, more importantly, to stop the door catching the edge and dragging the whole thing underneath itself.
That is a real problem with lighter weighted stoppers, and it is the reason some people end up with a wrinkled fabric tube rather than a seal. The fill here is heavy-duty cotton and natural sand at 2.2 pounds, spread evenly for consistent contact, and the unit stands 3 inch tall to cover gaps of up to 3 inch.
It is sold in four length options, so measuring the door and choosing the matching length matters. Hanging handles at both ends make storage between seasons trivial, and a hook and loop fastener is included to hold the body while it is not in use. The 4.4 rating sits among the highest in this group on a smaller review base than the leaders.
One limitation is stated plainly on the product itself: indoor use only. It works on interior doors, patio doors and window sills inside the house, but it is not the right choice for an exterior door exposed to rain and snow.
The grip dots have to face the floor. Turned the other way, the smooth side slides easily, the body curls, and the door catches the edge instead of compressing against it. Owners report that this is an easy mistake to make the first time, because the two sides look similar in packaging.
The fix is immediate and takes a second. Lift the stopper out, turn it so the dotted side is down, and push it back. Once it is correct, the grip dots do their work without any further attention for the rest of the season.
It reduces some noise transfer, mostly from voices and hallway sound, but it is not a soundproofing product. A fabric and sand barrier absorbs a little high-frequency noise and does very little to low-frequency sound, so do not expect studio quality from a room divider.
For heavier sound reduction on an interior door, a thick foam sleeve such as pick 5 has more material in the path of the sound. If the draft is the main complaint, this weighted barrier is the more effective seal, especially across a wide gap.
Polyester shell with sand and PP cotton
Seven internal sandbags
2.2 lb weight
36 inch L x 5 inch W x 6.5 inch
Everything else in this guide is trying to disappear under the door. The Marwood does the opposite. It is a weighted fabric barrier with a decorative animal design, and its 4.7 rating is the highest of the ten products we looked at, with a single-digit share of the most critical feedback.
Underneath the print, the construction is serious. The outer polyester shell holds PP cotton and natural washed sand, divided into seven internal sandbags so the weight is spread evenly along the length rather than pooling at one end. Total weight reaches 2.2 pounds, which is enough to hold it firmly against the door without any attachment method.
That weight and even distribution is what reviewers single out repeatedly, with multiple notes about how densely packed the filling feels through the fabric. The soft outer surface glides over hardwood and laminate without scratching, which makes it one of the safer choices for a finished floor in a room you actually look at.
Knitted hanging loops at both ends mean the whole thing can be lifted off the floor and hung on a hook when it is not needed, so it does not become dead weight in a cupboard for six months. It suits doors and windows, and it is a genuinely popular gift, which is worth weighing if the person you are buying for lives with dogs.
Measure carefully, because this is the one consistent caveat in reviews. The stated length runs slightly longer than the nominal size to allow it to sit on both sides of the door, but on a wider door a little light and air can still get past the ends, and the barrier may be visibly narrower than the opening it is supposed to close.
Take the measurement at floor level with the door closed, and add a couple of inches to the figure printed on the label before you commit. Getting this right is the difference between a full-width seal and a decorative tube sitting in the middle of the gap.
For air, yes, and often better in a wide gap, because the mass holds a consistent contact line regardless of how far the door is off the floor. For sound and light, a thick foam sleeve usually performs better because the material itself is denser in the path.
The trade-off is handling. A 2.2 pound fabric bar is noticeably heavier and bulkier than a foam sleeve, so if you want to seal and unseal the door several times a day, or if children or pets will be moving it, a lighter slide-on option is the more practical choice.
The right choice comes down to two measurements and one material decision: how wide the gap is, how thick and wide the door is, and whether you can use adhesive. Get those three right and the choice takes about a minute. Get the first one wrong and nothing else matters, because a stopper that cannot reach your gap will not seal regardless of how well it is made.
Close the door fully, then measure the gap at its widest point with a ruler or tape measure. Take three readings: hinge side, centre and latch side, and use the largest. Doors are rarely parallel to the floor along their whole width, and the centre reading will usually understate what you have.
Next, measure door thickness edge to edge and the width of the door itself. Slide-on foam sleeves are sized by both, because the door has to slide into the sleeve without being forced. Finally, note your floor type, because carpet behaves very differently from smooth hardwood when a soft or weighted unit slides across it.
Gap under 0.5 inch: almost anything works. A slide-on foam sleeve such as pick 5 is the safest choice, and an adhesive strip will also seal.
Gap from 0.5 to 1.5 inch: a twin foam sleeve or a wide adhesive profile. Pick 3 and pick 4 are built for this range.
Gap from 1.5 to 3 inch: move to a weighted fabric barrier. Pick 8 and pick 9 stand on the floor and do not depend on catching the door edge.
Gap over 3 inch: a weighted barrier is the only realistic option, and you should also check the door is closing properly on its hinges rather than simply buying a bigger blocker.
Adhesive is the fastest and the least permanent. It leaves a door completely unmarked when removed, but it depends entirely on surface preparation and it is the only type that can let go in freezing weather. Screw-in or compression-channel hardware is the most durable and the most permanent, and it is the wrong choice in a rental.
Slide-on foam sleeves and weighted fabric barriers sit in between: they are completely removable, damage nothing, and they are the option we recommend for renters, for painted doors you care about, and for anyone who wants to seal the door only during the colder months. If you do use adhesive, this is how to keep it stuck down through winter.
Clean the bottom edge of the door and let it dry completely, including any dust, wax or fresh paint.
Warm the tape strip and the door surface with a hairdryer for thirty seconds before peeling the backing.
Press the strip into place along the full length, working from the centre outwards to the corners.
Hold firm pressure on the entire strip for a full thirty seconds, then check again after the first cold night.
Foam and fabric sleeves with smooth, soft outer covers are safe on hardwood, tile, vinyl and marble. Felt-bottomed or heavily weighted fabric units can scratch over time if the base drags, and hard plastic or metal components are the ones to watch on a finished floor. PVC grip dots on the underside of a weighted stopper are a compromise that trades a very slight risk of marking for a much better seal on carpet.
Whichever type you choose, lift it out occasionally and clean beneath it. Grit trapped under a barrier for a season is a more realistic cause of scratching than the barrier material itself. If the door leads outside and the problem is rain and wind rather than a draught, our picks for door awnings address the source from above instead.
Renters should start with the slide-on foam and weighted options, since nothing is adhered, screwed or drilled. A rolled towel along the bottom of a door is also a genuinely effective temporary barrier, and it remains a credible answer where you need something tonight.
Also be realistic about the whole leak. The gap under the door is often only part of the story, and cold air frequently arrives around the frame, down the sides and across the threshold. If your stopper works but the room is still cold, add brush-style weatherstripping to the sides and a seal to the top of the frame before you blame the product. Where the gap is at a garage entry rather than a standard door, the same principle applies, and our guide to garage door screens covers the openings that sit alongside it.
Finally, most people leave a good stopper in place all year rather than storing it in July. A sealed door also blocks insects in summer, reduces noise between rooms, keeps dust out and limits the conditioned air leaking out of a cooled house. The buying guide for cold-weather drafts and the buying guide for summer are often the same product. If the noise rather than the draught is your priority, our picks for door draft guards for double doors go deeper on that side of the problem.
A slide-on double-sided foam stopper is the best general choice for cold weather. It seals both faces of the door, installs with no adhesive and no tools, and leaves the door and floor unmarked. Choose one rated for at least the gap you measured, and add a weighted fabric barrier if your gap exceeds roughly 1.5 inch.
Yes, but only when the product’s gap coverage exceeds the gap you measured and the type suits your floor and door. A stopper rated below your gap will leave a visible strip of daylight and airflow. The U.S. Department of Energy reports that the average home loses 25 to 40 percent of its heat through walls and the gaps around doors and windows, and the gap under one exterior door is among the cheapest to close.
Close the door fully and measure the gap at its widest point with a ruler or tape measure, taking three readings at the hinge side, centre and latch side and using the largest. Then measure door thickness and door width, since slide-on sleeves are sized by both. Note your floor type as well, because carpet behaves very differently from smooth hardwood when a soft or weighted unit slides across it.
It depends on the type. Adhesive strips generally top out near 1 inch, wide adhesive profiles reach about 1.8 inch, twin foam sleeves cover up to roughly 1.5 to 1.7 inch, and weighted fabric barriers handle gaps of up to 3 inch. Beyond that, check whether the door is closing properly on its hinges rather than simply buying a larger blocker.
Cold reduces the tack of most pressure-sensitive tapes, and an adhesive strip also fails faster on dusty, chalky or uneven door surfaces. Clean and dry the bottom edge of the door, warm both the tape and the door with a hairdryer for thirty seconds before pressing, then hold firm pressure along the full strip for another thirty seconds. A wide-profile adhesive seal holds far better in cold weather than a narrow one.
Usually yes. Warm the adhesive with a hairdryer for a few seconds before peeling and most strips release without residue, but on a chalky, dusty or freshly painted door you may see a faint residue line or a slight dulling of the finish. Slide-on foam sleeves and weighted fabric barriers avoid the question entirely, because nothing ever touches the door surface.
The best under door draft blockers for winter this year fall into three clear groups. For most homes, the Suptikes two-pack adhesive strip is the one to beat: nearly 39,000 owner ratings, a tool-free install and a dual-layer foam seal that stops cold, noise and light at once. Where the gap runs wider than an inch, the Suptikes three-layer profile reaches 1.8 inch with an adhesive backing wide enough to survive cold.
Where you cannot or would not use adhesive, the Holikme twin foam sleeve is the pick, with hook and loop retention, a washable cover and coverage up to 1.7 inch. For genuinely large gaps in older houses, the Sunolga and GORILLA GRIP weighted barriers cover up to 3 inch without touching the door, and the Marwood does the same job on a door where appearance counts.
Measure your gap at its widest point, decide whether you are allowed adhesive, and you can make the right choice in under a minute. We update this guide every year as new models reach the category, and last refreshed in October 2026.
