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Draft & Door

Room-by-room draft sealing / Published specs, not opinions

Find the draft.
Fix it this weekend.

Every pick on this site is matched to a measured gap size, using the manufacturer's own published range. Live prices, plain reasons, and the one we would skip.

Start with the opening that is cold: a door, a window, the garage, or a leak you cannot see yet.

Cold daylight showing through the gap under a closed exterior door at floor level
Measure your gap firstFind the draftHow we pick

Everyone in this category says they tested twenty door sweeps. We haven't tested any, and we say so. What we did instead: read the spec sheets, pulled the published gap range for every part, and matched them to the gap you can measure in thirty seconds.

Sponsored placements

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Free products accepted

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Units we claim to have tested

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Parts with published specs

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Start where it is cold

Four openings, four sets of parts

A closed white exterior door photographed from inside with cold daylight showing along its bottom edge

01 / DOORS

Doors

Sweeps, weather stripping and stoppers for front doors, interior doors, sliders and pet doors.

Open doors
Frost forming on the inside of an old single-pane window on a bright winter morning

02 / WINDOWS

Windows

Shrink film, weather stripping tape and rope caulk for old sash, modern units and rented apartments.

Open windows
A sectional garage door closed onto a concrete slab with daylight visible along the bottom edge

03 / GARAGE

Garage

Bottom seals, floor-bonded thresholds and trim seals for the jambs and header.

Open garage
An unsealed attic hatch panel in a hallway ceiling, seen from below in cold light

04 / HIDDEN LEAKS

Hidden leaks

Diagnosis, outlet gaskets, and the caulk-and-foam decisions for everything that is not a door or a window.

Open hidden leaks

Prices are checked live at the retailer

What we would buy, by category

The top pick from each roundup. Measure your gap first — every one of these is placed by the range its maker publishes.

Daylight visible through the gap under a closed exterior door, seen from inside at floor level

Best door sweeps

Frost King A79/36H Premium Aluminum and Reinforced Rubber Door Sweep

A screw-on aluminum carrier with a reinforced rubber blade — the version of this part that survives a winter of a storm door slamming into it.

Gap range: Roughly 1/4 in to 3/4 in

CHECK PRICE
A fabric draft stopper tube pressed against the bottom of an interior door

Best draft stoppers

MAXTID Door Draft Stopper for 30 in Interior Doors

The rare listing in this category that publishes a numeric gap range — 0.5 in to 1.2 in — which is why it leads on the selector table.

Gap range: 0.5 in to 1.2 in (published)

CHECK PRICE
A roll of self-adhesive rubber weather stripping being pressed onto a wooden door frame

Best weather stripping

Frost King EPDM Rubber Self-Stick Weatherseal Tape, D-Section, 5/16 in x 1/4 in x 17 ft

EPDM in a hollow D — the profile that keeps sealing at minus ten where foam tape has already gone hard.

Gap range: Published 1/4 in thick; compresses to seal gaps of roughly 1/8 in to 1/4 in

CHECK PRICE
Clear shrink film stretched across an interior window frame with frost visible on the glass outside

Best window film kits

Duck MAX Strength Heavy Duty Insulating Film Window Kit, 3-Window

Thicker, puncture-resistant film for the case that kills ordinary window kits: something touches the film.

Gap range: Covers three windows within a published 62 in x 126 in of film

CHECK PRICE
Self-adhesive weather stripping being applied along the lower sash of a double-hung window

Best window tape

Frost King EPDM Rubber Self-Stick Weatherseal Tape, D-Section, 5/16 in x 1/4 in x 17 ft

EPDM in a hollow D — the profile that keeps sealing at minus ten where foam tape has already gone hard.

Gap range: Published 1/4 in thick; compresses to seal gaps of roughly 1/8 in to 1/4 in

CHECK PRICE
A portable air conditioner exhaust panel fitted in a window sash with a visible gap at the edge

Best AC window seals

fowong AC Window Seal Foam Tape, 1 in x 1 in, 6.5 ft x 2

Inch-thick foam for the gaps a window air conditioner leaves — the summer version of the same problem.

Gap range: Published 1 in thick; fills gaps of roughly 1/4 in to 3/4 in

CHECK PRICE
The bottom rubber seal of a sectional garage door meeting a concrete floor, seen from inside

Best bottom seals

M-D Building Products 03749 Rubber Garage Door Bottom Seal, 16 ft

Sixteen feet of rubber bottom seal from the maker most garage doors already have on them — the straight replacement.

Gap range: Seals the door-to-slab gap on a flat floor; 16 ft covers a standard double door

CHECK PRICE
A black rubber threshold strip bonded to a garage floor across the door opening

Best threshold seals

Storm Shield Garage Door Threshold Seal Kit, 16 ft

This is the part for a floor that is not flat: it bonds to the slab and the door closes onto it, so the seal follows the concrete instead of fighting it.

Gap range: 16 ft; published to conform to most floor surfaces including slightly uneven or sloped slabs

CHECK PRICE
A wall outlet with its faceplate removed, showing the gap around the electrical box

Best outlet gaskets

Frost King OS6H Foam Outlet and Switch Sealers, 2-1/2 in x 4 in

Fire-retardant foam gaskets cut to the standard 2-1/2 by 4 inch plate — the part, not a novelty.

Gap range: Fits standard US outlet and switch plate openings

CHECK PRICE

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Why this site is different

We match specs to your gap

Every pick carries the working gap range its manufacturer publishes, and where a maker publishes none we say so instead of estimating one. Nobody else in this category does this.

Prices are live or absent

We never type a price into an article. Buy buttons show the retailer's live price when we have it and say "check price" when we do not.

We say what to skip

Every roundup names something we would not buy, with the reason. Universal praise is advertising.

No testing claims, ever

We have no lab and no owned units, so we do not claim any. The method is published in full on how we pick.

Read these first

A steel tape measure held against the gap between a door and its threshold

01 / DOORS

How to measure a door gap properly

The index-card method, the three-point rule, and how to read your number against a published seal size.

A thin ribbon of smoke from an incense stick bending sideways next to a window frame

04 / HIDDEN LEAKS

How to find drafts in your house

Five tests, no equipment, an hour — ordered so you find the big leaks before the small ones.

Daylight visible through the gap under a closed exterior door, seen from inside at floor level

01 / DOORS

The best door sweeps, sorted by the gap they actually close

Six sweeps placed by the gap they close, from a slim vinyl blade to a brush for uneven floors.

Clear shrink film stretched across an interior window frame with frost visible on the glass outside

02 / WINDOWS

The best window insulation kits, by published coverage

Shrink-film kits ranked by published coverage and film weight, plus the frame checks that decide whether the tape holds.

Latest

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How this is funded

Draft & Door is a participant in the Amazon Services LLC Associates Program. We earn a commission on qualifying purchases made through links on this site, at no extra cost to you. Commission rates do not influence which products we recommend or the order they appear in, and no manufacturer has paid for placement, sent us product, or reviewed our copy.

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