Air Sealing
Air sealing is one of the most effective ways to improve your home’s comfort, reduce drafts, and prevent heated or cooled air from escaping. Many homes lose energy through small gaps, cracks, attic leaks, crawl space openings, and poorly sealed areas that allow outdoor air to enter. At DBS Repair, we identify problem areas and provide professional air sealing solutions designed to help your home stay more comfortable year-round.
Understanding the Stack Effect
By the laws of convection, warm air rises and escapes through dozens of cracks and openings in the attic. As it leaves, an equal volume of new air is pulled in from the crawl space, basement, and outside, only to be heated and lost again. This continuous cycle is known as the stack effect, and it can waste energy 24 hours a day. Professional air sealing helps stop this airflow by closing the gaps where conditioned air escapes and outdoor air enters.
A clear warning sign is dirt-stained insulation. This often means your insulation is filtering leaking air and trapping dust like a furnace filter. Wherever you see staining, your home may be losing conditioned air. Insulation alone cannot solve the problem because it does not stop airflow, which is why DBS recommends air sealing before adding insulation.
The stack effect happens when warm air rises and escapes through the upper levels of your home, pulling cold outdoor air in through lower gaps and openings. This constant air movement can make rooms feel drafty, increase energy bills, and force your HVAC system to work harder. Proper air sealing helps control this airflow and keeps conditioned air where it belongs.
Air Leaks Are Built Into the House
Many air leaks are hidden in areas homeowners rarely see, including attic access points, rim joists, crawl spaces, plumbing penetrations, wiring gaps, recessed lights, and basement openings. Even small leaks can add up to major energy loss over time. Sealing these areas helps improve comfort, indoor air quality, and overall home performance.
How leaks happen
Joints & Contractor Holes
Wood shrinks and connections loosen, so once-tight joints open up. Electricians, HVAC crews, and plumbers drill and saw channels for their runs, creating gaps from tiny openings around outlets to large holes where pipes pass through framing and cantilever soffits.
Common places we seal
The Usual Suspects
Around pipes and wires, around the chimney, duct chases, between framing and drywall at the top of walls, can lights, pull-down stairs and scuttle holes, rim joists and sill plates, sump-pump holes, and the basement.
Air Sealing: What to Expect
During your inspection, DBS Repair will look for common sources of air leakage and identify areas where your home is losing energy. Our team will explain the issues clearly and recommend the best air sealing solutions for your property. The goal is to reduce drafts, improve efficiency, and help your home feel more consistent from room to room.
1.
Free on-site inspection and estimate
DBS Repair assesses the home and tests for leakage in ducts, the attic, windows, and elsewhere, then recommends solutions
2.
Prioritize the biggest leaks
The largest and highest-impact leaks, often in the attic and rim joists, are targeted first.
3.
Seal the envelope
Gaps around can lights, framing seams, pipe and wire penetrations, chimneys, and duct chases are sealed.
4.
Duct sealing
Leaky ductwork is sealed so heated and cooled air reaches the rooms it is meant for instead of the attic.
5.
Insulate
With leaks sealed, insulation is added so it can finally perform, rather than burying unsealed leaks under a foot of material.
See the Hidden Benefits of Basement Insulation!
Why Air Seal with DBS Repair
DBS Repair understands how Minnesota homes are affected by cold weather, moisture, drafts, and energy loss. Our team focuses on long-term home comfort, not quick fixes. With professional inspection, proven solutions, and experience in basements, crawl spaces, insulation, and home performance, DBS can help create a tighter, healthier, and more efficient home.
Sealing Comes First
DBS Repair seals leaks before insulating, so insulation is not wasted and leaks are not buried out of reach.
Beats the Stack Effect
Stopping the top-to-bottom air cycle cuts the energy your home wastes around the clock.
Duct Sealing Included
Sealed ducts keep furnace-heated air from leaking into a cold attic, so you run the system less.
Fewer Drafts
Sealing the leaks behind drafty rooms and uneven temperatures restores comfort.
Better Indoor Air
Less unfiltered air pulled from the crawl space and basement means cleaner indoor air.
We Fix Others’ Misses
DBS Repair finds and seals the leakage points left behind during original construction.
Stop Paying to Heat the Outdoors. Get a Free Inspection
DBS Repair provides professional air sealing services throughout Minnesota and Wisconsin, helping homeowners reduce drafts, improve energy efficiency, and create a more comfortable living environment. We locate and seal hidden air leaks in homes across Minneapolis, Maple Grove, Duluth, Superior, Eau Claire, and nearby communities. Every estimate includes a comprehensive inspection, expert recommendations, and a written proposal with no obligation, so you can make an informed decision about improving your home’s performance.
Home Insulation
Reviews
your neighbors are talking about us…
DBS Repair has been keeping attics, basements, crawl spaces, and walls warm in winter and cool in summer with home insulation across Minnesota and Wisconsin,
from Duluth to Eau Claire, for nearly 15 years!
See what your neighbors have been saying about DBS Repair’s
home insulation services.
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