
In New England’s four-season climate, the small gap at the bottom of your storm door can cost big money in lost energy. A properly sized storm door sweep extension fills that space, blocking wind, rain, pollen and pests while improving comfort year-round. At CountBricks, we help homeowners and residential contractors specify, price and install the right extension in minutes using our AI-driven estimating platform.
A storm door sweep extension is a flexible vinyl, rubber or composite strip fastened to the underside of a storm door. It rides lightly across the threshold, creating an adaptive seal. Over time, sweeps wear down or the door settles, leaving a gap. Replacing or extending the sweep is faster and cheaper than replacing the entire door, yet it delivers a noticeable boost in energy efficiency and weather protection.
1. You see daylight below the closed door
2. You feel cold or hot drafts near the threshold
3. Water spots appear on interior flooring after storms
4. Insects are entering even when the door is shut
5. The existing sweep is cracked, torn or warped
6. Energy bills have crept up despite stable utility rates
CountBricks transforms a task that once took hours of manual measurement and pricing into a quick voice conversation. Our platform listens as you describe the door size, material and threshold style. AI then recommends compatible sweep extension profiles, retrieves up-to-the-minute material costs and generates a labor allowance based on local Boston rates. The result: an itemized estimate you can share or convert to an invoice in seconds.
• Dynamic blueprint takeoffs: Upload a PDF plan and let CountBricks highlight every exterior door that needs a sweep extension.
• Real-time cost library: Pricing pulls from regional suppliers so your quote is accurate on the day you send it.
• Task sequencing: Labor time is adjusted if multiple doors are bundled in the same visit, giving clients transparent savings.
1. Measure the door width at the base and deduct 1/8 inch for clearance.
2. Remove the old sweep by loosening retention screws or sliding it out of the channel.
3. Cut the new storm door sweep extension to length using tin snips or a fine-tooth hacksaw.
4. Dry-fit the extension, checking for smooth door operation and full threshold contact.
5. Fasten with rust-resistant screws or slide-in clips supplied by the manufacturer.
6. Close the door, inspect for light leaks, and adjust set screws until the seal is even.
• Choose UV-resistant vinyl or silicone for doors with full sun exposure.
• For uneven thresholds, opt for a double-fin or drip-cap design to handle wider gaps.
• Apply a thin bead of clear exterior silicone at the ends to prevent water migration.
• Re-inspect the sweep each spring and tighten screws that may loosen after freeze-thaw cycles.
Homeowners worry about hidden costs. CountBricks eliminates surprises by showing material, labor and overhead as separate lines.
• Material: Premium adjustable vinyl extension – $14–$24
• Fasteners & sealant: Stainless steel screws, tube silicone – $6
• Labor: 0.75 hours at prevailing wage – $55–$65
• Total typical installed cost: $75–$95
Speed – Voice estimates cut admin time by up to 80%.
Accuracy – AI cost engines update daily so your margin is protected.
Professionalism – The branded quote builder turns a small repair like a sweep extension into a polished proposal clients trust.
As building codes tighten and homeowners demand greener homes, tiny inefficiencies like door sweeps draw increasing attention. Whether you manage a portfolio of rentals or run a remodeling crew, partnering with CountBricks keeps you ahead of the curve. Explore the full platform at CountBricks.com/services and see how our AI tools streamline everything from blueprint takeoffs to final invoicing.

A Boston property manager recently asked CountBricks to price storm door sweep extensions for twelve duplexes dating from the 1960s. The doors were original aluminum units with badly deteriorated sweeps, causing ice dams near the thresholds and tenant complaints about drafts.
1. The manager uploaded a single PDF site plan. Our blueprint AI identified 24 exterior doors automatically.
2. Through a five-minute voice session, she confirmed door widths and threshold types. CountBricks’ material library suggested an adjustable silicone sweep extension rated to −20 °F.
3. The platform generated a line-item estimate: • 24 sweep extensions • 18 labor hours adjusted for crew efficiency • Consumables and disposal fees • Contingency allowance of 5%
4. The manager approved with one click. The crew received a populated task list via the CountBricks mobile app the next morning.
• Installation completed in a single afternoon, two hours ahead of schedule.
• Tenant call-backs dropped to zero over the next three months of winter storms.
• Utility analysis showed a 9 % reduction in heating costs across the duplexes.
• The property manager added CountBricks to their annual maintenance contract, confident in the platform’s accuracy and speed.
• Even small tasks deserve professional estimating—AI makes it profitable.
• Bundling multiple storm door sweep extensions delivers economies of scale you can share with clients.
• Real-time pricing protects margins when material costs fluctuate.
Ready to streamline your next project? Visit CountBricks.com/consultation and experience estimate generation that matches your pace of work.