Weatherproofing Your Exterior Doors for Every Season

Exterior doors are often the portals that let unwanted drafts, moisture, and even pests enter your home. Weatherproofing them is an essential project for protecting your investment and maintaining comfort throughout every season. Simple fixes like sealing gaps and adding weatherstripping can make a noticeable difference in your energy bills and indoor air quality. No matter the age of your house, taking the time to seal up those leaks is worth it. Ready to block out the elements and keep conditioned air inside? Let’s get started.

Project Snapshot

Weatherproofing an exterior door involves inspecting for gaps, applying or replacing weatherstripping, sealing the threshold, and caulking cracks. The goal is to ensure a tight seal that prevents air and water from sneaking in. This project is quick, affordable, and has a measurable impact on your home’s efficiency.

Tools and Materials

You’ll need a utility knife, flathead screwdriver, measuring tape, caulk gun, and a hammer. Materials include self-adhesive weatherstripping, door sweeps, exterior-grade caulk, and possibly a new threshold strip. Having rags for cleanup and a pry bar can also come in handy for removing old materials.

Step-by-Step Instructions

Begin by thoroughly inspecting the door frame, threshold, and the door itself for any visible cracks or gaps. Use the measuring tape to determine the length needed for new weatherstripping and door sweeps. Gently remove any old weatherstripping or caulk that might have worn out over the years. Apply new weatherstripping to the jambs and adhere a door sweep to the bottom edge of the door. Carefully run a bead of exterior caulk along the frame, paying special attention to any cracks or seams. Wipe away any excess caulk with a rag before it dries. Open and close the door several times to make sure there is a snug, but not tight, seal.

From the Toolbox

One rainy fall afternoon, a Handydads technician got a call from a homeowner who reported a chilly draft and water pooling by their back door. After inspecting the aged doorway, the culprit was clear: crumbling weatherstripping and gaps at the threshold. In less than two hours, all the materials were replaced, and the homeowner immediately noticed a warmer room and no more puddles after the next storm.

Top 5 Mistakes

Overlooking small gaps around the door edges is a common error that allows drafts to persist. Using interior caulk instead of exterior grade leads to premature failure. Forgetting to check for an uneven threshold can leave parts of the door unprotected. Skipping the test fit of the door sweep before attaching can result in a poor seal. Not cleaning surfaces fully before applying weatherstripping or caulk means adhesive might not stick properly.

Tool and Material Recommendations

For weatherstripping, choose closed-cell foam varieties for optimal insulation. Look for adjustable aluminum door sweeps with rubber bottoms for durability. Invest in a high-quality silicone exterior caulk for long-lasting results. The DEWALT utility knife and IRWIN caulk gun are top picks for ease of use. Always select products designed for the specific material of your door, whether wood, metal, or fiberglass.

Quick Tips and Hacks

Always apply weatherstripping on a dry, clean surface for the best adhesion. Mark where you’ll place strips before peeling off adhesive backing to avoid mistakes. Add a bead of caulk at the corners for extra protection. Use a hairdryer to gently warm old adhesive, making it easier to remove worn-out weatherstripping. Regularly inspect your door’s seal, especially after severe weather.

Need a Hand?

If you want to keep your home cozy and efficient all year long but aren’t sure where to start, let Handydads handle your weatherproofing. Our expert team will ensure every seal is tight and durable so you can enjoy peace of mind and energy savings. Contact Handydads today for a free consultation and leave drafts and leaks behind.