Compare the highest-rated insulation professionals in Grantham, Pennsylvania. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, modern insulation contractor specializing in a comprehensive range of services from energy audits to advanced spray foam and blown-in insulation. They emphasize education and helping homeowners choose the right solution for efficiency and comfort. They are part of a national brand with strong local franchise operations.
A well-established, locally-owned contractor with a strong focus on whole-home energy efficiency solutions. They are known for professional project management and high-quality workmanship. Their services are comprehensive, often pairing insulation upgrades with air sealing for maximum performance.
While their name highlights waterproofing, this company is a key player in the foundational insulation market. They specialize in insulating and sealing the areas most contractors overlook: basements and crawl spaces. This is critical for complete home envelope performance and moisture control.
** The insulation market in the Grantham, PA area is characterized by a moderate level of competition, primarily from established regional contractors based in Mechanicsburg, Harrisburg, and Camp Hill. The quality is generally high, with several providers holding certifications from manufacturers like Owens Corning and BASF, and many are well-versed in building science principles. The local housing stock includes a mix of older homes (pre-1970s) with outdated or insufficient insulation and newer constructions that may still benefit from advanced air sealing and insulation upgrades. This drives demand for both retrofit projects and new-build services. Homeowners in this region are typically conscious of energy costs, leading to a strong focus on services that offer a clear return on investment, such as attic insulation and air sealing. Providers are generally knowledgeable about Pennsylvania-specific energy rebates and incentives, such as those from the Pennsylvania Department of Environmental Protection or through local utilities like UGI. **Typical Pricing:** Costs can vary significantly based on the project scope and material. * **Blown-in Attic Insulation:** $1,500 - $4,500 * **Spray Foam Insulation (closed-cell):** $1.50 - $3.00 per board foot * **Wall Insulation (drill-and-fill):** $1.50 - $3.50 per square foot * **Full Basement Insulation:** $2,000 - $8,000+ It is highly recommended that homeowners obtain at least 2-3 detailed quotes, including a manual J load calculation for new systems, to ensure proper sizing and material selection for their specific home and energy goals.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Grantham regulations and climate
Get answers to common questions about insulation services in Grantham, Pennsylvania.
For Grantham's humid summers and cold winters, blown-in cellulose or fiberglass in attics and walls is often the most cost-effective upgrade for older homes. These materials provide excellent thermal resistance (R-value) and air sealing, which is crucial for our Pennsylvania climate. While spray foam offers superior air sealing, its higher upfront cost means the best return on investment for many homeowners here comes from comprehensive air sealing combined with dense-pack cellulose.
The ideal times are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather in the Cumberland County area, which is optimal for attic work and allows for proper ventilation of the home during installation. Scheduling during these shoulder seasons also helps you prepare your home for the peak heating and cooling demands of our Pennsylvania winter and summer, and you'll likely find greater contractor availability than in the height of summer or deep winter.
Yes, insulation work must comply with the 2021 International Residential Code (IRC), which Pennsylvania has adopted, specifying minimum R-values for different parts of the home. More importantly, Pennsylvania offers significant rebates through the Whole-Home Energy Solutions program, and Grantham homeowners should also check with PPL Electric Utilities for direct incentives. These can substantially offset the cost of adding insulation to meet or exceed the recommended R-values for our climate zone (Zone 5).
Look for a contractor who is licensed and insured in Pennsylvania and has specific experience with homes in our region. They should perform a thorough energy audit or assessment before providing a quote. We recommend asking for local references in the Mechanicsburg or Harrisburg area and verifying they understand the specific moisture control challenges posed by our humid summers, as improper installation can lead to mold or rot in wall cavities.
For drafty homes in Grantham, air sealing is the critical first step. Adding insulation on top of significant air leaks (especially in the attic) is less effective and can trap moisture, leading to issues. A professional assessment will target leaks around chimneys, plumbing vents, and attic hatches common in local homes. Once major leaks are sealed, adding insulation to recommended Pennsylvania levels for Zone 5 (e.g., R-49 to R-60 for attics) will provide the full benefit of improved comfort and lower energy bills.