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Serving Reno, NV and surrounding areas. (775) 491-3183
Closed-cell foam insulates and air-seals in one pass, delivering the highest performance available for Reno homes where space is limited and the temperature swings are real.
Closed-cell foam insulation in Reno expands into a rigid, dense layer that resists heat flow and blocks air movement at the same time. Most jobs covering an attic or crawl space are completed in one to two days, and the foam reaches its final hardness overnight.
Most insulation materials only slow heat from moving through a wall or ceiling. Closed-cell foam does both: it insulates and it seals every crack and gap it touches. That combination is why homeowners in older Reno homes often notice an immediate difference in how steady the indoor temperature feels after installation. The foam also adds stiffness to the wall or rafter cavity, which is a structural side benefit in older wood-frame homes that have shifted over the decades.
Closed-cell foam is most commonly installed in attics and crawl spaces where performance per inch matters most. It is also a natural fit when paired with open-cell foam or as part of a full spray foam insulation project scoped for the whole home.
If your NV Energy bill jumps sharply when Reno hits its summer highs or winter lows, your home is likely losing conditioned air faster than it should. A well-insulated home holds its temperature much longer, so your HVAC system does not have to run as often. If your bills feel out of proportion to your square footage, aging or thin insulation is one of the first things worth investigating.
In Reno's older neighborhoods, especially homes from the 1970s through 1990s, it is common to find rooms that never reach a comfortable temperature no matter how long the HVAC runs. Uneven comfort is often caused by a combination of thin insulation and air leaking in through gaps. If one room is always 10 degrees warmer in July or stays cold all winter, that is worth acting on.
Hold your hand near an electrical outlet on an exterior wall on a cold Reno morning. If you feel cool air moving, outside air is getting in through gaps in the wall cavity. The same test works near the attic access hatch. If cold air falls down when you open it, the attic is not properly sealed. These are the exact gaps that closed-cell foam is designed to close.
Reno's summer monsoon season brings brief humidity spikes after months of dry air. If moisture is getting into your walls or crawl space, you may notice condensation on interior surfaces or a damp odor from below the floor. Closed-cell foam's moisture resistance makes it one of the most effective materials for stopping this kind of infiltration before it leads to mold or wood rot.
Reno Insulation applies closed cell spray foam in attics, crawl spaces, basement walls, rim joists, and exterior wall cavities during open-wall renovation projects. We use truck-mounted and portable rig setups depending on access, and we apply the foam in measured passes to build up to the correct thickness for Reno's climate zone. Every job includes a visual coverage check before we pack up.
We pull the required permits through the City of Reno or Washoe County, depending on your address, and we schedule the inspector sign-off after the thermal barrier is in place. Nevada building codes require spray foam to be covered with drywall or an approved ignition barrier in accessible and occupied spaces, and that step is included in our quotes. We do not price it as a surprise add-on.
Closed-cell foam is part of our broader spray foam insulation services. For projects where budget is the primary concern and moisture resistance is less critical, open-cell foam is a lower-cost alternative worth comparing.
Best for Reno homes where the attic is the primary source of heat gain in summer and heat loss in winter, and where rafter space is limited.
Best for homes with vented crawl spaces where moisture and cold air entry from below is causing floor discomfort and higher heating bills.
Best for all homes as a first step, since the rim joist is consistently one of the highest-leakage areas in Reno's older housing stock.
Best for renovation projects where exterior walls are open and upgrading insulation is a practical step before re-drywalling.
Reno's high-desert climate is one of the most demanding in the western United States for an insulation system. Summer highs regularly push past 100 degrees and winter nights can drop below 10 degrees, a range of more than 90 degrees that puts enormous stress on any thermal envelope. Closed-cell foam's high resistance to heat flow per inch makes it exceptionally well-suited to this climate because it holds performance in both directions without adding thickness that older wall and rafter cavities cannot accommodate.
A large share of Reno's single-family homes were built during the 1970s, 1980s, and 1990s when insulation standards were significantly lower than today. If your home was built before 2000 and has never had insulation work done, there is a strong chance the attic and crawl space fall well below what is recommended for this climate zone. The Spray Polyurethane Foam Alliance maintains training and quality standards for installers, and asking whether your contractor's crew has completed that training is a practical way to verify quality before you commit.
Reno's location in the Truckee Meadows also means wildfire smoke is a recurring concern, and closed-cell foam's air-sealing properties reduce the pathways smoke uses to enter homes through the building envelope. Homeowners in Sparks, South Lake Tahoe, and Truckee face the same combination of extreme temperatures and smoke exposure, and closed-cell foam addresses both in one application.
We respond within one business day. We will ask your home's age, which areas you want insulated, and whether any prior work has been done. This is not a sales call; it is enough information to send the right equipment to your estimate visit.
We walk the attic, crawl space, or walls you want insulated, measure the space, and check for anything that needs to be addressed before foam goes in. Your written quote includes materials, labor, permit, and the thermal barrier covering, so you are not surprised after the crew arrives.
Once you approve the quote, we apply for the required permit through the City of Reno or Washoe County. This typically takes a few days to a couple of weeks. We handle the paperwork. You get a confirmed installation date once the permit is approved.
The crew arrives, sets up protective sheeting, and applies the foam in passes until the correct thickness is reached. Most attic or crawl space jobs take one day. Plan to be out of the home during spraying. A city or county inspector signs off after the thermal barrier is in place.
Permit-ready. Licensed Nevada contractor. Written quote that includes everything.
(775) 491-3183We pull the required permit through the City of Reno or Washoe County and coordinate the final inspection so you have a documented paper trail that protects you now and when you sell. Contractors who skip this step are cutting corners, and unpermitted spray foam work can create problems with your homeowner's insurance and your title.
We have worked on homes across Reno's neighborhoods, from the older wood-frame construction near Midtown to the stucco subdivisions in South Reno and Spanish Springs. Knowing what to expect in a 1980s Reno attic versus a 2005 new build affects how we approach the job before we ever open the rig.
NV Energy offers rebates for qualifying insulation improvements, and we walk every customer through current eligibility before the job starts. Most Reno homeowners qualify for at least a partial rebate, and we help make sure the work is documented correctly so the rebate claim does not get rejected over a technicality.
Nevada code requires spray foam to be covered with an approved thermal barrier in accessible spaces. We price that step into every quote rather than presenting it as a separate charge after the foam is already in. You will not see a line-item surprise when we invoice.
Closed-cell foam is one of the higher-cost insulation options upfront, which is exactly why the contractor you choose matters. We are licensed, permit-compliant, and transparent about every line in our quotes. The Nevada State Contractors Board lets you verify our license in minutes before you sign anything, and we encourage every homeowner to do exactly that.
Open-cell foam costs less per square foot and suits interior walls and attics where moisture resistance is not the primary concern.
Learn moreA full overview of spray foam options, including when closed-cell versus open-cell is the right choice for your specific project.
Learn morePermit-ready crews, thermal barrier included in every quote. Schedule before the season fills up and lock in your installation date.