Problem:
The homeowner in Centereach, NY was experiencing multiple basement issues including structural cracks in the foundation walls and floor, poor insulation, moisture concerns, and energy loss throughout the basement area. The existing insulation was outdated and ineffective, which made the home less energy efficient and increased heating costs. Water penetration through the cracks also created concerns about long-term structural damage and basement moisture.
Solution:
Our team completed a full basement waterproofing, structural repair, and insulation upgrade to improve the safety, comfort, and energy efficiency of the home.
We started by insulating the rim joists around the entire perimeter of the foundation using 2 inches of spray foam insulation to achieve an R-value of 14. This helped reduce air leakage, improve moisture resistance, and increase overall energy efficiency. A blower door test was performed before and after the project to measure the improvement in air sealing performance.
For the basement walls, we repaired the structural cracks using a full epoxy and urethane injection system. We first ground the wall surfaces to expose clean concrete and remove loose materials and efflorescence. Injection ports were then installed every 6 inches vertically along the cracks. Our team injected urethane and epoxy formulations deep into the cracks to completely fill and waterproof the voids. To finish the repair, we applied a layer of Basecrete waterproofing cement over the repaired areas for added protection and durability.
The basement floor also had visible structural cracks that required stabilization. We ground the affected areas and stitched the cracks using hot dip galvanized steel anchors. This process restored tensile strength across the cracks, stabilized the floor, and helped prevent future movement and expansion.
In the basement ceiling area, approximately 2,014 square feet, we removed and disposed of the old insulation and cleaned the entire space thoroughly. Where necessary, we treated surfaces with an all-natural disinfectant designed to remove mold and mildew while helping repel rodents. We then installed point bonded non-woven netting where required and blew in dense packed cellulose insulation to achieve an R-value of 38.
The cellulose insulation used in this project is environmentally friendly, fire resistant, moisture resistant, and designed to improve indoor comfort while reducing outside noise.
To complete the project, we removed and replaced the garage door, framed both sides with lumber, and sealed the perimeter using spray foam insulation to improve air sealing and protection against moisture infiltration.
Result:
The basement is now structurally reinforced, fully waterproofed, and significantly more energy efficient. The repaired cracks are stabilized and protected against future water penetration with a 30-year warranty on the waterproofing work.
The new insulation system improved temperature control, reduced drafts, and created a healthier indoor environment throughout the basement area. The homeowner now has a cleaner, safer, and more comfortable space with long-term protection against moisture and energy loss.