Professional air sealing identifies and closes the gaps, cracks, and penetrations that let conditioned air escape — the single most cost-effective energy improvement for Denver homes. Serving Denver, Aurora, Lakewood, Arvada, Westminster, Thornton, Centennial, Boulder, Littleton, Broomfield, Castle Rock, Parker, Golden, Englewood, and the surrounding Denver metro area within 100 miles.
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Reduces energy loss by 25–40% — highest ROI energy improvement
Blower door testing to identify the worst air leaks
Seals gaps around plumbing, wiring, ductwork, and penetrations
Foundation for effective insulation upgrades
May qualify for Xcel Energy rebates (up to 30% of cost)
Meets Denver energy code 3 ACH50 air leakage requirements
A proven, methodical approach refined over 20+ years of professional installation.
We use a blower door to pressurize your home and identify the largest sources of air leakage, prioritizing the gaps that will deliver the biggest energy savings.
Using the blower door results and visual inspection, we map every significant air leak — from attic bypasses to basement rim joists to window and door gaps.
We seal identified leaks using the appropriate materials — caulk, spray foam, weatherstripping, gaskets, and rigid barriers — for each specific gap type and location.
A follow-up blower door test measures the improvement in air tightness, documenting the results for your records and any rebate applications.
Air leakage is the single biggest energy waster in most Denver homes. Gaps, cracks, and penetrations throughout the building envelope allow conditioned air to escape and outside air to infiltrate — forcing your HVAC system to work harder and driving up energy bills. Studies show that air leakage accounts for 25–40% of the energy used for heating and cooling in a typical home. Sky Insulation provides professional air sealing services that systematically identify and close these hidden leaks. Using blower door testing to pinpoint the worst offenders, we seal gaps around plumbing penetrations, electrical wiring, ductwork, recessed lights, windows, doors, and the countless other small openings that add up to significant air loss. The result is a tighter building envelope that dramatically improves comfort and energy efficiency. Air sealing is the foundation of any effective insulation upgrade — without it, even the best insulation can't perform to its full potential. Denver's current energy code requires residential buildings to meet 3 ACH50 (air changes per hour at 50 Pascals) air leakage limits, and Xcel Energy offers rebates covering up to 30% of air sealing costs. Sky Insulation helps you qualify for these savings.
Air sealing typically delivers the best return on investment of any home energy improvement — often paying for itself within 2–3 years through energy savings.
Sealing air leaks eliminates the drafts and cold spots that make Denver homes uncomfortable during winter, improving comfort in every room.
Air sealing before insulating ensures your insulation works at its full potential — without sealed air gaps, insulation alone can't stop conditioned air from escaping.
Blower door testing before and after air sealing provides objective, measurable proof of improvement — no guesswork.
A blower door test uses a calibrated fan mounted in an exterior door to pressurize your home to 50 Pascals. This reveals the location and severity of air leaks throughout the building envelope, allowing us to prioritize sealing work for maximum impact.
The biggest air leaks are typically in the attic (around plumbing vents, wiring, recessed lights, and ductwork), at rim joists in the basement, around windows and doors, and at any penetration through the building envelope. Attic bypasses are usually the largest single source.
Always air seal before adding insulation. Air leaks allow conditioned air to bypass your insulation entirely, dramatically reducing its effectiveness. Sealing first ensures your insulation investment delivers maximum performance.
Yes — Xcel Energy's Whole Home Efficiency program offers rebates covering up to 30% of air sealing costs (up to $400). Contact us for details on current rebate availability and how to qualify.
Air sealing typically reduces heating and cooling costs by 15–25%, depending on the severity of your home's air leakage. Combined with insulation upgrades, total energy savings of 30–50% are common.
Serving Denver, Aurora, Lakewood, Arvada, Westminster, Thornton, Centennial, Boulder, Littleton, Broomfield, Castle Rock, Parker, Golden, Englewood, and the surrounding Denver metro area within 100 miles.
Based in Denver, CO, we provide professional insulation, fireproofing, and waterproofing services to homeowners and businesses within a 100-mile radius.
+ Surrounding communities within the Denver Metro Area
