Seal doors for winter using weatherstripping, door sweeps, and threshold adjustments to block drafts and reduce heating costs.
Seal doors for winter using weatherstripping, door sweeps, and threshold adjustments to block drafts and reduce heating costs.
Ashland homeowners wondering if they should install a storm door or not should know that even without a storm door, proper sealing dramatically improves comfort and efficiency.
Here’s how to winterize your entry doors:
- Weatherstripping Inspection — Check foam or rubber seals around door edges. Compressed, cracked, or missing weatherstripping is the primary source of door drafts. Replacement strips cost $15-$30 and install in 30 minutes.
- Door Sweep Installation — The gap beneath doors lets cold air pour in at floor level. Self-adhesive sweeps cost $10-$20 and block this major infiltration point. Choose brush or fin style based on threshold height.
- Threshold Adjustment — Many thresholds have adjustment screws that raise the seal against the door bottom. Turn screws until the door closes against the threshold firmly without dragging.
- Strike Plate Alignment — Doors that don’t close tightly against weatherstripping let air bypass seals entirely. Adjust the strike plate position so locks pull the door firmly into the frame.
- Caulking Gaps — Check where the door frame meets the exterior wall. Cracked or missing caulk lets air infiltrate around the entire door unit, not just through the door itself.
- Storm Door Addition — Still asking if you need a storm door or not? Storm doors create an insulating air pocket and add another barrier against wind. They’re especially valuable for sliding glass french door and entry door applications.
Our Top Picks
Top Choice Overall: Complete weatherstripping replacement plus door sweep installation for maximum draft elimination.
Best Quick Fix: Adjusting threshold height closes gaps without purchasing materials.
Best Long-Term: Adding a storm door for extra protection, especially with navy blue storm doors or other colors matching your home.
Ready to stop cold drafts and start saving on heating bills this winter? Coastal Windows & Exteriors offers free door assessments and can recommend whether sealing or replacement makes better sense for your home. Coastal Windows & Exteriors has helped 7,000+ homeowners stay comfortable across MA, NH, ME.
Request a free door estimate from Coastal Windows & Exteriors.
Browse our complete doors FAQ guide from Coastal Windows & Exteriors.
Explore our Doors Exterior Remodeling Home Improvement Help Center.
Last Updated: May 2026
Sources:
- Installing ENERGY STAR certified windows, doors, and skylights can reduce heating and cooling costs by an average of up to 13% compared to non-certified products, making proper door sealing and upgrades a worthwhile investment. ENERGY STAR Residential Windows, Doors, and Skylights, ENERGY STAR’s guidance on certified door products and their energy savings potential for homeowners managing winter heating costs. (Accessed May 2026)
- Reducing air infiltration in the home can cut natural gas or heating oil consumption by 15%, underscoring the value of properly sealed doors and weatherstripping. ENERGY STAR Why Seal and Insulate, ENERGY STAR’s resource on the energy savings benefits of sealing air leaks throughout the home. (Accessed May 2026)
