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Serving Superior, WI and surrounding areas. (715) 217-3037
Custom Superior Insulation installs spray foam, blown-in, and attic insulation for homes across Superior and 11 surrounding communities. We have been sealing heat loss in this region since 2018 and respond to every inquiry within 1 business day.
We offer 16 insulation and air sealing services for residential and commercial properties. Every project starts with a free on-site estimate.
Most of the housing stock here was built before modern insulation standards existed. We have been working on these homes since 2018 and know what they actually need.
We tell you what your home needs and give you a written estimate. We do not push the most expensive option if a simpler fix does the job.
For work that requires a permit through the City of Superior, we handle it. That keeps you protected when you sell your home.
Our crew does not hand jobs off to subcontractors. The people who show up for the estimate are the same people who do the work.
Custom Superior Insulation was founded in 2018 by people who know what Wisconsin winters do to a home. Superior sits at the western tip of Lake Superior, where heating season runs from October through April and the moisture off the lake works its way into homes that were not built to handle it. Most of the housing stock here was built before modern insulation standards, and homeowners deal with the consequences every winter.
We are a small company by design. We do not subcontract work, and we do not rush jobs. Whether your home is in Billings Park, near the UW-Superior campus, or across the bridge in Duluth, MN, we have worked on homes like yours. Learn more about us.
We serve Superior, WI and 11 surrounding communities. Reach out and we will respond within 1 business day to schedule your free on-site estimate - no obligation, no sales pressure.
(715) 217-3037Call us or submit the contact form. Describe what you are dealing with - high bills, drafts, ice dams, or a cold room. We respond within 1 business day.
We visit your home, walk the attic, crawl space, and basement, and give you a written estimate. No pressure, no commitment required.
Our crew handles permits where required, completes the installation, and leaves the space clean. Most jobs are done in one to two days.
Lower heating bills, warmer rooms, and no more ice dams. Call us if anything is not right after we leave - we stand behind the work.
Superior winters push well below zero, and gaps in your insulation mean your furnace runs constantly while you pay for it. Spray foam seals those gaps in rim joists, crawl spaces, and wall cavities - delivering both thermal resistance and air sealing in a single installation.
We install both open-cell and closed-cell foam and match the right product to each part of your home. Our spray foam insulation page covers the full details.
(715) 217-3037
The attic is where most Superior homes lose heat fastest in winter. The temperature difference between a warm ceiling and a frigid attic creates constant pressure to pull heat out - and that shows up on your heating bill every month from October through April.
Properly installed attic insulation combined with air sealing reduces that heat loss and cuts ice dam risk.
Learn about attic insulationFills irregular attic joists, wall cavities, and tight corners that batt insulation cannot reach - practical for wood-frame homes without tearing out walls.
Learn moreA full-home assessment covering every zone - attic, walls, crawl space, and rim joist - gives you a clear plan for where to start and what to expect.
Learn moreOld, damaged, or contaminated insulation needs to come out before new material goes in. We remove it safely and dispose of it properly before re-insulating.
Learn moreExposed crawl spaces let cold in and moisture up. Proper insulation and vapor control keeps the floor above warmer and protects your framing.
Learn moreUninsulated foundation walls and rim joists are a constant source of heat loss in Superior homes. We insulate both to stop the cold at the foundation level.
Learn moreAir sealing closes the gaps that let heated air escape all winter long - it is often the highest-impact improvement before adding more insulation.
Learn moreWe serve 12 communities across northwestern Wisconsin and northeastern Minnesota. Most jobs are scheduled within the same week.
Most residential insulation projects in Superior fall between $1,500 and $5,000, depending on the service type, area being treated, and home size. Blown-in attic insulation for a typical single-family home is often in the $1,500 to $3,000 range. Spray foam in crawl spaces and rim joists runs higher per square foot due to material cost. Wisconsin's Focus on Energy program offers rebates for qualifying insulation upgrades, and the federal energy efficiency tax credit can offset up to 30% of eligible costs.
The clearest signs are heating bills that seem high for the size of your home, rooms that are hard to keep warm in winter, drafts near electrical outlets or baseboards, and ice dams forming on your roof after snowfall. Homes built before 1960 - which describes much of Superior's housing stock - are especially likely to be under-insulated. A free on-site walkthrough takes about 30 minutes and gives you a clear picture of where you are losing heat.
Closed-cell spray foam is denser, delivers a higher R-value per inch, and acts as a moisture barrier - making it the right choice for rim joists, crawl spaces, and exterior-facing surfaces in Superior's cold, damp climate. Open-cell foam costs less per square foot and works well in interior walls and attic spaces where moisture resistance is less critical. We assess your home and recommend the right type for each application.
Yes - crawl space insulation is one of the most impactful improvements you can make in a Superior-area home. An uninsulated crawl space exposes your floor framing and subfloor to cold air and ground moisture through the entire heating season. Closed-cell spray foam or rigid board insulation combined with a vapor barrier stops heat loss at the floor, prevents moisture damage to the wood structure, and makes the living area above noticeably warmer from October through April.
Most residential jobs are completed in one to two days. Blown-in attic insulation for a standard home typically takes four to eight hours. Spray foam in a crawl space or rim joist adds time depending on the area. If the project requires a permit through the City of Superior's Building Inspection division, allow a few extra days for permit issuance before scheduling installation. We give you a complete timeline before work begins.
Yes. We serve 12 communities across northwestern Wisconsin and northeastern Minnesota, including Duluth, Hermantown, Proctor, Cloquet, Two Harbors, Rice Lake, Ashland, Hayward, Solon Springs, Barnum, and Esko. If you are not sure whether we cover your location, call us - we likely do.
Custom Superior Insulation
1604 N 20th St
Superior, WI 54880
Always open, 24/7.
Custom Superior Insulation serves Superior, WI and 11 surrounding communities. Call us or send a message and we will respond within 1 business day.