The biting cold, wind, snow, and ice of winter can do more than chill your bones, and they have a way of sneaking into your building through doors. Not only will it drive up your energy bills, but it will also cause drafts and impose wear and tear.
A door is one of the key boundaries between your interior climate and the elements outside, so ensuring it is properly weather-proofed is a necessity. From sealing gaps to reinforcing thresholds, winterizing your doors will:
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Provide comfort
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Lowers heating costs
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Extend the life of your door
Quick Answer: How Do You Weatherproof a Commercial Door for Winter?
Weatherproofing a commercial door involves sealing gaps around the frame, replacing worn weatherstripping, installing a door sweep, inspecting door gaskets, and ensuring the threshold creates a tight seal. Proper commercial door weatherproofing helps prevent drafts, reduce energy loss, improve indoor comfort, and protect buildings from moisture, snow, and cold winter temperatures. Regular door maintenance can also extend the lifespan of commercial metal doors, wood doors, storefront doors, and other exterior door systems.
Identify Trouble Spots
Before you start sealing every corner, it’s important to locate where cold air sneaks in. The most common problem areas are:
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Gaps around doorframes
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Worn weatherstripping
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Spaces between the threshold and the bottom of the door
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Poorly insulated attic doors
Addressing these leaks early is recommended, as unchecked drafts can lead to both energy waste and moisture damage. Here are a few simple but effective techniques you can try, but most of them work best at night
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Light Test: With the indoor lights on, step outside and look closely at the door edges. If you can see even the faintest glow seeping through, that’s a leak waiting to be sealed.
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Candle Method: Close the door firmly and move a lit candle slowly around the edges. If the flame flickers, you’ve found a draft pathway.
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Paper Slip Test: Place a sheet of paper under or alongside the door and close it. If the paper slides out without resistance, extra weatherproofing is needed.
Once you’ve spotted those gaps, lightly stuff tissue into them; this gives you a quick visual reminder of exactly where to apply sealant or weatherstripping later.
Common Areas Where Commercial Doors Lose Energy
Most commercial door air leaks occur around the perimeter of the opening. Common problem areas include worn weatherstripping, damaged door sweeps, improperly sealed thresholds, deteriorated door gaskets, and gaps between the frame and wall. Exterior commercial doors, storefront doors, metal building doors, and commercial steel doors should be inspected before winter to identify areas where cold air, moisture, and drafts can enter the building.
Draft Sealing
Draft sealing is a great way to prevent that winter chill from seeping into your home. Adding or replacing weatherstripping around your doors can reduce leaks significantly. A weatherstrip is a flexible material fitted around movable parts like doors and windows. Its job is to seal gaps, keeping drafts out while still allowing the door or window to open and close smoothly.
Door sweeps are also a low-cost fix for the gap between the bottom of the door and the threshold. Also, caulk is a simple yet effective way to seal cracks and gaps around the frame. However, caulk is not a permanent solution and will be less effective over time.
| Weatherproofing Product | Purpose |
|---|---|
| Weatherstripping | Seals gaps around the frame and door edges. |
| Door Sweep | Blocks drafts beneath the door. |
| Threshold Seal | Creates a tighter seal at the bottom of the opening. |
| Door Gasket | Reduces air leakage around the perimeter. |
| Caulk | Seals cracks between the frame and surrounding wall. |
Attic Doors
When winterizing, many homeowners forget the attic access door. Warm air rises, and if your attic door isn’t sealed or insulated properly, it becomes a highway for heat loss. Adding an insulated attic door cover or gasket can improve efficiency dramatically. According to the Environmental Protection Agency, sealing attic access points can save homeowners up to 15% on heating and cooling costs.
Benefits of Commercial Door Weatherproofing
Proper commercial door weatherproofing can help reduce heating costs, improve occupant comfort, protect against moisture intrusion, and reduce strain on HVAC systems. Weatherproofing commercial metal doors, commercial wood doors, storefront doors, and metal building doors before winter can also help prevent premature wear on door hardware, weatherstripping, and door seals. A well-sealed exterior door opening provides better long-term performance and energy efficiency throughout the year.
Stay Ahead of Winter With CDF Distributors
At CDF Distributors, we know that you need a strong and well-sealed door during winter. Our doors and weatherproofing solutions are designed to prepare your spaces for the seasons ahead. Don’t wait until the first cold draft hits. Explore our solutions today and get a quote from us to keep winter where it belongs, outside.
