Spray Foam Insulation Services
Spray foam insulation seals and insulates in a single step. It bonds to the surface it is applied to, expands to fill irregular spaces, and creates a continuous air and moisture barrier alongside its thermal performance.York Home Performance installs open and closed-cell spray foam for homeowners across Pennsylvania and Maryland. We assess whether spray foam is the right solution for your specific application before recommending it.
Open-Cell vs. Closed-Cell Spray Foam
Open-Cell Spray Foam: A softer, lower-density material with an R-value of approximately R-3.5 per inch. Vapor-permeable, meaning moisture can pass through it. Cost-effective for interior applications where air sealing is the primary goal and moisture management is not a major concern.
Closed-Cell Spray Foam: Denser with an R-value of approximately R-6 to R-7 per inch. Also a vapor retarder, slowing moisture movement as well as air movement. The preferred material for exterior applications, rim joists, crawl space walls, and anywhere moisture management is critical.
Which Type Is Right for Your Application: We assess your application and recommend the appropriate type based on the location, the moisture conditions, and the performance goals. We do not default to one type for every job.
Where We Use Spray Foam
Rim Joists
The most common spray foam application we perform. Closed-cell spray foam seals and insulates the rim joist in a single pass, eliminates air leakage, and provides excellent moisture resistance at the foundation level.
Crawl Space Walls
Applied to crawl space walls as part of an encapsulation project, spray foam creates a sealed, conditioned crawl space that controls moisture and eliminates cold air entry from below.
Unvented Attic Assemblies
In unvented attic applications, spray foam is applied to the underside of the roof deck rather than the attic floor. A specialized application that is appropriate in specific construction types. We assess whether it is right for your home.
Targeted Air Sealing
Spray foam is often used to seal specific bypasses and penetrations as part of a broader air sealing project, even when it is not the primary insulation material.
UTILITY REBATE PROGRAMS
Utility Rebates for Spary Foam Insulation
Spray Foam Insulation as part of a qualifying home energy audit may be rebate-eligible through utility programs in PA and MD. York Home Performance is an approved contractor for multiple programs in both states and checks your eligibility when you call.
Get a Spray Foam Estimate
York Home Performance serves homeowners across Pennsylvania and Maryland. We will assess your application, confirm whether spray foam is the right solution, and give you a clear estimate.
No pressure. No obligation. Just an honest assessment from a BPI-certified team with over a decade of experience.
Frequently Asked Questions About Spray Foam Insulation
How long does spray foam insulation last?
Properly installed spray foam lasts the lifetime of the building. It does not settle, shift, or degrade under normal conditions and maintains its air sealing and thermal properties indefinitely.
Is spray foam worth the higher cost?
Spray foam is more expensive per square foot than blown-in or batt insulation, but it is the best material for specific applications. For rim joists, crawl space walls, and unvented attic assemblies, the combination of air sealing and insulation in a single material justifies the cost. We tell you honestly when spray foam is the right choice and when a less expensive material will perform just as well.
Does spray foam off-gas after installation?
Properly installed spray foam is inert once cured and does not off-gas. During installation the area needs ventilation, but once the foam has fully cured it is safe. We follow all manufacturer and industry guidelines for ventilation during and after installation.
Can spray foam be used in an existing attic?
In some cases yes, depending on the attic assembly. We assess the existing conditions before recommending spray foam in an attic context. For most standard attic retrofits, blown-in insulation is the more appropriate and cost-effective choice.
Where do you provide spray foam insulation services?
We serve homeowners across Pennsylvania and Maryland including York County and surrounding PA counties, and the greater Baltimore and central Maryland area.