Exterior door sweep12/28/2023 ![]() I think my best option is a u-shaped sweep like the Frost King B79/36H. I've been looking at flat sweeps, such as the Frost King A79/36H but that doesn't seem right for the main entrance. ![]() The front door has an old threshold seal which doesn't seal. I don't think flat sweeps are the right choice here. I'm planning on u-shaped door-sweeps for both. ![]() I later decided to replace the entire exterior door and door frame with a new energy efficient model having a single pane of glass that’s easy to clean.My house near Philadelphia USA (built in 1890) has two wood doors with gaps at the threshold. The door shuts snugly now and is free of air drafts and water leaks. ![]() Reinstall the door by aligning the door hinges with the hinge leaves, then replace the hinge pins. The new weatherstrip installed and ready for use: New Door Bottom Weatherstrip Installed Attaching the New Door Bottom Weatherstrip The tube acts as a compressible gasket to seal out the weather. The weatherstrip should be installed with the tube side facing the outdoors. I’m holding the “tube” between my thumb and finger. Note: The “ tube and fin” design of the weatherstrip. The instructions call for a rubber mallet, but it was easy enough to smack it with the palm of my hand for a tight fit against the door bottom. The weatherstrip snaps into the door bottom by the barbed ribs and grooves. The door grooves are highlighted by the red lines: Checking the Weatherstrip Fit with the Door The new weatherstrip is checked for the correct length with the door bottom. Measured the length of bottom door grove and trim the barbed ribs to fit the door as shown: Trimming the Barbed Ribs to Fit a 32 inch Door It was necessary to cut 2 inches off both ends (4 inches total) because the barbed ribs are set back from the ends to fit a 36 inch door. My door is 32 inches but the new weatherstrip is 36 inches long. Remove the Worn Out Weatherstrip Install the New Door Bottom Weatherstrip I put a coat of oil-based wood preservative on the exposed wood as a waterproofing agent. To remove the old weatherstrip, just pull it off as shown. The weatherstrip is attached by barbed ribs that snap into grooves (or kerfs) in the door bottom. Frost King – UDS36 Replacement Door Bottom Weatherstrip Remove the Old Door Bottom Weatherstrip doorsweep) that fits my door is a Frost King part # UDS36. The replacement door bottom weatherstrip (a.k.a. I took a photo of the worn-out weatherstrip with my iPhone (like the above photo) to compare and match the part when shopping for a replacement at the hardware store. My door is 32 inches long and 1-3/4 inches wide. Measure the length and width of the door. Be careful – my metal and glass door was heavy, weighing at least 50lbs. I laid the door on its side edgewise to inspect the bottom weatherstrip (see above photo). With a helper holding the door, I began by removing the door from the hinges by driving out the hinge pins with a screw driver and hammer. How to Replace a Worn Out Door Bottom Weatherstrip Worn Out Door Weatherstrip Remove the Exterior Door The new part cost about $9.00 from Home Depot and the repair was performed in about 10 minutes. The weatherstrip needs to be snug against the door threshold for a good seal and it wears out over time when the door is opened and closed. I noticed the problem when wind driven rainwater leaked under the door. The bottom weatherstrip (or door sweep) on the exterior door was worn out after 8+ years of daily use.
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