Windows & Doors
Repair Guides / Exterior & Envelope
Windows & Doors
Find air leaks, stop drafts and condensation, choose the right caulk and weatherstripping, and improve window, entry-door, storm-door, and garage-door seals.
- 30 focused guides
- Draft and moisture diagnosis
- Repair-before-replace decisions
Find the leak. Match the seal. Protect the opening.Recommended starting points
Locate the Exact Gap Before Choosing a Product
A draft may come through a movable sash, a frame joint, an exterior gap, a threshold, or a garage-door seal. The correct fix depends on where air or water is actually crossing the opening.
Separate air leakage from moisture and glass failure
Window Drafts, Weatherstripping, and Condensation
Detect leakage, choose temporary or durable air-sealing methods, and read condensation patterns correctly.
Window Weatherstripping
Match weatherstripping type and profile to the sash, gap, and movement.
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How to Detect Air Leaks in Your House
Use practical checks to locate hidden gaps throughout the house.
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Air-Sealing Checklist for Homeowners
Work through penetrations, windows, doors, and common bypasses in order.
Read the guide →How to Seal Drafty Windows
Improve comfort without replacing a serviceable window.
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Rope Caulk for Windows
Understand where removable rope caulk helps and where it does not.
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Window Insulation Kits
Know when shrink-film kits improve comfort and when another repair is needed.
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Why Windows Sweat Inside the House
Connect indoor humidity, glass temperature, ventilation, and air leakage.
Read the guide →
Condensation Between Window Panes
Recognize moisture trapped inside an insulated glass unit.
Read the guide →Seal the joint without blocking the window’s water management
Window Caulk, Storm Windows, and Replacement Decisions
Select compatible sealants, size deep joints correctly, preserve drainage, and compare repair or storm-window options with replacement.
How to Recaulk Windows
Remove failed material, prepare the joint, and apply a durable new bead.
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Best Caulk for Exterior Windows
Match movement, paintability, substrate, and weather exposure.
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Where Not to Caulk Around Windows
Avoid sealing weeps, moving parts, and other intentional openings.
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Backer Rod for Caulking Windows and Doors
Use backer rod to manage depth, shape, adhesion, and sealant use.
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Interior Storm Windows
Compare comfort, condensation control, appearance, and seasonal use.
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Storm Windows vs Replacement Windows
Weigh storm-window performance against the cost and benefits of replacement.
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When to Replace Windows
Recognize decay, failed operation, glass problems, and repairs that no longer hold.
Read the guide →Match the product to the gap location
Sliding and Exterior Door Drafts, Sweeps, and Thresholds
Use alignment, perimeter gaps, bottom clearance, and door movement to choose weatherstripping, a sweep, a threshold adjustment, or another repair.
Door Sweep vs Weatherstripping
Know whether the leak needs perimeter weatherstripping, a bottom sweep, or both.
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Sliding Glass Door Drafts
Find leakage at panels, interlocks, frames, tracks, and bottom seals.
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Sliding Glass Door Weatherstripping
Identify and replace compatible pile, fin, or compression weatherstripping.
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How to Fix a Drafty Door
Correct common perimeter and threshold gaps without replacing the door.
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Best Weatherstripping for Doors
Compare compression, kerf, adhesive, V-strip, and other common types.
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Best Door Sweep for an Exterior Door
Match sweep style, clearance, exposure, and threshold shape.
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How to Adjust an Exterior Door Threshold
Raise or lower an adjustable threshold for contact without binding.
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Door Draft Stoppers
Compare fabric, weighted, twin, and adhesive draft stoppers.
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Gap Between Door and Frame
Trace uneven gaps to hinges, alignment, weatherstripping, or frame movement.
Read the guide →Restore controlled closing and continuous seals
Storm-Door and Garage-Door Seals
Replace worn sweeps, tune storm-door closing, and close garage-door gaps at the bottom, threshold, header, and sides.
Storm Door Sweep Replacement
Measure the channel and replace the sweep for better contact.
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How to Adjust a Storm Door Closer
Adjust sweep speed and latch speed without creating a slam or failed latch.
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Garage Door Bottom Seal
Identify the retainer and seal profile before ordering a replacement.
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Garage Door Threshold Seals
Know when a threshold seal helps with water, air, and uneven floors.
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Garage Door Top Seals
Restore sealing at the top without interfering with travel.
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Garage Door Gaps on the Sides
Separate seal wear from track, framing, and door-position problems.
Read the guide →Finished with this topic?
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