Spray Foam Insulation - Same-Day Service, Done Right the First Time

Trusted Spray Foam Insulation Nationwide

If you’re wondering how much Spray Foam Insulation costs, it runs $1.50 to $4.50 per board foot installed, with most whole-home projects at $3,000 to $10,000 depending on area treated and foam type. Aspen Attic Insulation has installed spray foam systems since 2002, and we still answer our own phones around the clock at (864) 428-1615.

Call (864) 428-1615

We’re the insulation company that tells you the technician’s name and shows you his photo before he ever pulls into your driveway. Every Aspen Attic Insulation crew works to the Threshold Standard: background-checked, identity-verified, photo-badged, and sent to you in a clean marked uniform. You get a written price before any work starts, and every job carries our 365-Day Done Right Promise in writing. If the repair fails, we come back free. No voicemail loops, no post-job surprises, no stranger at your door you didn’t approve.

We source materials from eight leading manufacturers including Icynene, Demilec, and Knauf so we match the right product to your specific building, not just whatever’s in the truck. Call (864) 428-1615 for a free estimate.

Closed Cell Spray Foam Insulation

Closed Cell Spray Foam Insulation is a dense, rigid foam that cures to a hard shell with an R-value of about R-6 to R-7 per inch, making it the choice for areas where space is tight and moisture resistance matters. We use it in crawl spaces, rim joists, exterior walls, and anywhere water intrusion is a concern because the closed cell structure blocks vapor movement. Most closed cell jobs run $2.50 to $4.50 per board foot installed. Aspen Attic Insulation crews apply it with professional-grade plural-component rigs, monitor substrate temperature and humidity in real time, and won’t spray unless conditions meet manufacturer spec.

Structural Strength

Closed cell foam adds roughly 2 to 4 pounds per square inch of compressive strength once cured, which means it can actually help stiffen wall assemblies and roof decks. We see this matter most in metal buildings, pole barns, and older homes with settled framing.

Moisture Barrier Performance

At thicknesses above 1.5 inches, closed cell foam qualifies as a Class II vapor retarder without any additional facing. That eliminates the need for separate poly sheeting in many code jurisdictions, reducing labor and material layers.

Open Cell Spray Foam

Open Cell Spray Foam is a lighter, softer foam that expands aggressively to fill cavities, achieving R-values around R-3.5 to R-4 per inch at roughly half the material cost of closed cell. We install it in attics, interior walls, and sound-dampening applications where the assembly has room for thicker insulation and moisture management is handled separately. Typical installed cost runs $1.50 to $3.00 per board foot. The open structure allows water vapor to pass through, which is actually desirable in certain roof assemblies where you want drying toward the interior.

Sound Dampening

Open cell’s porous structure absorbs airborne sound far better than closed cell or fiberglass batts. We often spec it for interior partition walls, home theater rooms, and bedrooms where traffic noise or plumbing runs create disturbance.

Cost-Effective Coverage

Because open cell expands to roughly 100 times its liquid volume, a single set of drums covers more square footage than closed cell. For large attic planes with adequate rafter depth, that translates to meaningful savings without sacrificing thermal performance.

Spray Foam Insulation Contractors

Before hiring anyone, read our DIY vs Professional Spray Foam Insulation: What’s Safe to Do Yourself guide. Spray Foam Insulation Contractors are specialists who apply two-component polyurethane foam systems using heated, pressurized equipment that demands training and calibration discipline. Aspen Attic Insulation technicians train under the Threshold Standard, which includes manufacturer certification, ongoing safety refreshers, and documented field hours before solo application. We don’t subcontract spray foam work to day laborers or uncertified crews. Our rigs run daily calibration checks on pressure, temperature, and mix ratio because off-ratio foam fails to cure properly and must be removed. Whole-home spray foam contracts typically range $5,000 to $10,000.

Equipment and Chemistry

We use Graco and PMC proportioning systems with heated hoses and gun-mounted temperature displays. The A-side (isocyanate) and B-side (polyol blend) must hit the substrate within 2 degrees of target temperature for proper rise and adhesion.

Cleanup and Overspray Protocol

Our crews mask windows, doors, finished surfaces, and HVAC registers with taped poly before spraying. We scrape overspray from framing within the tack-free window and leave the site broom-clean, not dust-coated.

Spray Foam Attic Insulation

The Complete Spray Foam Insulation Guide for Los Angeles Homeowners covers this in depth. Spray Foam Attic Insulation creates a continuous, gap-free thermal barrier across rafters or joists, eliminating the bypasses and compression spots common with batt installations. We apply open cell to the underside of roof decks in vented attics and closed cell in unvented conditioned attics where code requires a vapor barrier. Most attic projects run $2,000 to $6,000 depending on square footage and foam type. Aspen Attic Insulation crews use thermal imaging during application to verify complete coverage and identify any thin spots before the foam skins over.

Conditioned Attic Conversion

Converting a vented attic to conditioned space with spray foam moves the thermal boundary to the roof deck, bringing ductwork inside the building envelope. That alone can cut HVAC losses by 20 to 30 percent in homes with attic-mounted air handlers.

Air Sealing Integration

We sequence spray foam after sealing penetrations with caulk and foam, but before blown-in cap layers where specified. The combination locks down stack effect leakage paths that batt insulation leaves open around chimneys and top plates.

Spray Foam Wall Insulation

Spray Foam Wall Insulation fills stud bays completely, adhering to sheathing and framing members to create an air barrier and thermal barrier in one application. We install it in new construction before drywall and in retrofit applications through drilled access holes or from the exterior during siding replacement. Wall jobs typically run $1,500 to $4,000 depending on linear footage and wall height. Aspen Attic Insulation uses slow-rise formulations for existing walls to prevent bowing or distortion of finishes.

New Construction Timing

We coordinate with framers and rough trades to spray after plumbing and electrical inspection but before drywall hangers arrive. That sequencing prevents trade damage to finished foam and avoids the callback loop.

Retrofit Application Methods

For existing walls, we drill 5/8-inch holes at stud bay intervals and inject low-pressure foam that expands to fill without displacing wiring. We plug holes with matching material and texture where possible, or coordinate with your painter.

Rim Joist Spray Foam

Rim Joist Spray Foam seals the critical junction where the foundation meets the first floor framing, the single largest source of basement air leakage in most homes. We apply closed cell foam here because the concrete-to-wood interface sees seasonal moisture cycling and the area is too confined for effective batt installation. Typical rim joist treatment runs $800 to $2,500 for a full basement perimeter. Aspen Attic Insulation crews remove any existing fiberglass, brush away cobwebs and debris, and verify concrete moisture content before spraying.

Basement Comfort Impact

Sealing rim joists with closed cell foam often raises basement temperatures by 8 to 12 degrees in heating season because it stops the cold air waterfall effect that makes basement floors feel icy even when the thermostat reads 68.

Pest and Rodent Exclusion

Closed cell foam at the rim joist blocks the irregular gaps mice and insects exploit to enter wall cavities. We inspect for existing evidence and recommend exclusion before sealing, so we don’t trap pests inside the structure.

Crawl Space Spray Foam Insulation

Crawl Space Spray Foam Insulation addresses the dirt-floor, vented crawl spaces that act as moisture pumps and winter heat sinks in millions of homes. We apply closed cell foam to foundation walls and rim joists, then pair it with ground vapor barrier installation where missing, to create a sealed, conditioned crawl space. Projects typically range $2,000 to $5,500 depending on perimeter length and existing conditions. Aspen Attic Insulation crews wear respirators and protective suits in crawl spaces and document conditions with photos before and after.

Floor System Protection

Sealing crawl space walls with closed cell foam keeps floor joists and subflooring in the conditioned temperature range, reducing the moisture swings that cause hardwood cupping and mold growth. We’ve seen floors stabilize within one season after proper encapsulation.

Vapor Barrier Integration

We specify 10-mil or thicker reinforced polyethylene for ground coverage, lapped and sealed at seams, extended to walls, and mechanically fastened. The foam-to-membrane transition gets detail-sealed to prevent soil gas and moisture migration.

Garage Spray Foam Insulation

Garage Spray Foam Insulation treats the walls and ceiling planes that separate conditioned living space from the unconditioned garage, or converts the garage itself to usable conditioned space for workshops, home gyms, or studios. We use closed cell on garage ceilings beneath bedrooms for fire separation and air sealing, and either open or closed cell on walls depending on budget and climate. Typical garage treatments run $1,200 to $3,500. Aspen Attic Insulation checks garage door header details and firewall penetrations before spraying to maintain code-required separations.

Living Space Above

Bedrooms over garages are notoriously uncomfortable because the garage ceiling is rarely insulated properly. We spray closed cell to the garage ceiling underside, seal all penetrations, and often see the room above register 5 to 10 degrees closer to setpoint.

Conditioned Garage Conversion

For homeowners converting garage space to conditioned use, we spray walls and ceiling, then advise on HVAC extension or dedicated mini-split sizing. We don’t size equipment, but we do provide the insulation R-values and air leakage data your HVAC contractor needs.

Brands We Service

We install and service systems built with materials from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. Our crews train on each manufacturer’s specific application parameters because Icynene’s open cell water-blown formulations require different substrate prep than Demilec’s medium-density closed cell systems, and Rockwool’s mineral wool batts need complementary air sealing that spray foam provides. We stock multiple product lines so we specify by building science, not by warehouse availability.

Whether your existing insulation is CertainTeed, Knauf, or any other make, we can assess its condition, identify gaps, and recommend the right spray foam solution to complete the thermal envelope. We don’t push one brand; we match the material to the assembly.

Signs You Need a Pro Right Now

• Ice dams forming at roof edges in winter. Ice dams signal attic air leakage and inadequate insulation at the eave, where warm air escapes and melts snow that refreezes at the cold overhang. Spray foam at the roof deck and top plate interrupts this heat loss path.
• Rooms that stay cold despite the furnace running constantly. Persistent cold spots usually mean missing or displaced insulation, or air moving through wall cavities that bypasses the thermal barrier. Thermal imaging during our estimate pinpoints exactly where the envelope fails.
• Musty odors or visible mold in the basement or crawl space. Mold needs moisture and organic material; rim joists and crawl space framing provide both when humid outside air contacts cold surfaces. Closed cell foam creates a vapor-impermeable barrier that keeps framing dry.
• Dust that returns immediately after cleaning. Excessive dust often enters through attic bypasses and wall leaks, carrying fiberglass particles and outdoor allergens. Spray foam’s air sealing property chokes off these infiltration paths at their source.
• Energy bills that climbed sharply with no rate increase. Sudden consumption spikes suggest insulation failure, animal damage, or a new air leakage path opened by settling or construction activity. We diagnose the cause before quoting any work.

Our Process, Step by Step

1. 1
   Call and speak with a live person. When you dial (864) 428-1615, a real Aspen Attic Insulation representative answers, 24 hours a day. We ask about your home’s age, construction type, problem areas, and schedule a convenient appointment window.
2. 2
   Receive your technician’s name and photo. Before anyone arrives, we text or email the assigned technician’s identity verification: full name, photo, and badge number. If anyone else shows up, the visit is free and we make it right under the Threshold Standard.
3. 3
   On-site assessment with thermal imaging. Your technician arrives in a clean marked uniform, presents photo ID at the door, and walks the property with a FLIR thermal camera to document heat loss patterns, moisture anomalies, and insulation gaps.
4. 4
   Written price before any work begins. We deliver a detailed, line-item proposal with foam type, thickness, square footage, and total cost. You approve in writing or decline with no pressure. We never start work without a signed agreement.
5. 5
   Installation, cleanup, and documentation. Crews apply foam to manufacturer specifications, monitor cure conditions, remove masking and debris, and photograph completed work. You receive warranty paperwork for the 365-Day Done Right Promise before we leave.

How Much Does Spray Foam Insulation Cost?

Where We Work

Aspen Attic Insulation serves homeowners and commercial property owners across the United States through a network of independently owned and operated locations, each adhering to the Threshold Standard for technician verification and customer protection. Every crew is local to its service territory, not dispatched from a distant hub, so response times stay short and technicians understand regional building practices and code requirements. We don’t publish a territory map because our coverage expands regularly; call (864) 428-1615 and we’ll confirm service availability for your address.

Frequently Asked Questions About Spray Foam Insulation

Schedule Your Spray Foam Insulation Service Today

Call (864) 428-1615 now to speak with a live person and schedule your free estimate. We’ll send you your technician’s name and photo before anyone arrives, deliver a written price before any work starts, and back every job with our 365-Day Done Right Promise. No voicemail, no surprises, no strangers at your door.

Written by Garrett Sloane, Owner at Aspen Attic Insulation, serving homeowners nationwide since 2002.