The Problem: Mice Infestation in Crawl Space
A homeowner in Long Island, NY reached out to Zavza Seal after discovering signs of a mice infestation in the crawl space beneath their home. The affected area measured approximately 180 square feet and showed clear evidence of rodent activity, including droppings, odors, and damaged insulation.
Crawl spaces are a common entry point for pests like mice because of their easy access and dark, undisturbed environment. In this case, the old insulation was contaminated, and gaps in the foundation and rim joists provided multiple entryways. Left untreated, this issue could have led to structural damage, poor indoor air quality, and ongoing health risks.
The Solution: Crawl Space Cleaning, Sealing, and Insulation
At Zavza Seal, we specialize in crawl space pest-proofing and insulation services in Long Island. Our team created a comprehensive plan to eliminate the infestation and prevent future rodent entry while improving the overall condition of the crawl space.
Our Step-by-Step Process:
- Removal of Contaminated Insulation
We began by carefully removing and disposing of the old existing insulation, which was damaged and unsanitary due to rodent activity. - Cleaning the Crawl Space Floor
Next, our crew removed and disposed of all dirt and debris from the floor of the crawl space. This created a clean and healthy base for the next steps. - Air-Sealing the Rim Joists
We then air-sealed the rim joists, effectively blocking air leaks and potential pest entry points along the perimeter. - Installing New Insulation
We installed vapor-faced fiberglass batt insulation between the joists, providing both thermal protection and a vapor barrier to reduce moisture issues. - Sealing Holes and Cracks in the Foundation
Finally, we used Pestblock Insulating Spray Foam Sealant to seal all holes and cracks in the foundation, making it nearly impossible for rodents to reenter the crawl space.

The Outcome
Our systematic approach successfully eliminated the mice infestation and transformed the crawl space into a clean, sealed, and well-insulated environment. The homeowner can now enjoy improved indoor air quality, energy efficiency, and peace of mind knowing that the crawl space is protected from future rodent problems.
Why Homeowners in Long Island Choose Zavza Seal
Zavza Seal provides expert crawl space cleaning, insulation, and pest-proofing services across Long Island. We understand the unique challenges that come with maintaining a healthy crawl space and offer lasting solutions to protect your home.
If you are experiencing mice problems or need crawl space insulation and sealing, contact us today for a professional inspection and quote.