Project Type: Crawl Space Access & Insulation
Location: Queens, NY
Service Area: Crawl Space (Approx. 128 sq.ft.)
Project Overview
At Zavza Seal, our team was called to a residential property in Queens, NY, where the homeowner needed a custom access solution for a sealed crawl space and a high-performance insulation upgrade. The project involved cutting into the foundation, ensuring structural integrity, and applying closed-cell spray foam insulation to an R-30 rating—ideal for energy efficiency, moisture control, and long-term durability.
Client’s Main Concern
- The crawl space was completely inaccessible, making inspections and maintenance impossible.
- The home suffered from cold floors, increased utility bills, and moisture buildup.
- The client was looking for energy-efficient insulation that would last long and seal out external elements.
Zavza Seal’s Assessment
Upon inspection, our experienced crawl space specialists determined that:
- The property lacked proper access to the crawl space (approx. 128 sq.ft.).
- The absence of insulation contributed to heat loss, poor air quality, and potential moisture intrusion.
- Installing closed-cell spray foam would offer the highest R-value and air/vapor sealing capabilities.
Our recommendation was a two-phase plan:
- Create a structurally sound crawl space access point.
- Fully insulate the crawl space using closed-cell polyurethane foam to R-30.
Scope of Work
Crawl Space Access Door Installation
Objective: Create a permanent, weather-resistant, and structurally sound access door for future inspections and maintenance.
Tasks:
- Cut through the brick façade and foundation to create a crawl space entry point.
- Install a steel channel above the cut to support the load-bearing structure, ensuring no damage to the foundation or façade.
- Build a custom crawl space access door using pressure-treated lumber, weather-sealed and painted to the client’s preferred color for aesthetic consistency.
- Ensure door fit is tight to prevent drafts, pest intrusion, and water infiltration.
Crawl Space Preparation and Insulation
Objective: Improve energy efficiency, block moisture, and increase home comfort with a durable insulation solution.
Tasks:
- Clean and prepare the floor joists to ensure maximum adhesion for spray foam.
- Apply closed-cell spray foam insulation to the crawl space walls and floor, reaching an R-30 thermal rating.
- Use professional-grade spray equipment to ensure full coverage, seamless seals, and a long-lasting finish.
Why Closed-Cell Spray Foam?
- Achieves R-6.5 to R-7 per inch — the highest R-value per inch in insulation
- Creates a moisture barrier, helping prevent mold and mildew
- Adds structural rigidity to the floor above
- Great for air sealing and pest prevention
- Does not sag, settle, or lose effectiveness over time
Project Results
After our work, the homeowner enjoyed the following benefits:
- Safe and accessible crawl space with a durable, weather-resistant entry point
- Noticeably warmer floors and reduced drafts in the living space above
- Lower energy bills due to improved insulation and air sealing
- Protection from future moisture buildup and mold risks
- A fully sealed crawl space ready for long-term comfort and maintenance

Why Homeowners in Queens Trust Zavza Seal
- Over 15 years of insulation and waterproofing expertise
- Specialists in crawl space and foundation access
- Licensed & insured professionals
- Customized solutions using top-tier materials
- Serving Queens, Brooklyn, Long Island, and the Bronx
Don’t Neglect Your Crawl Space – Insulate It Today
Your crawl space plays a critical role in your home’s energy efficiency, comfort, and air quality. Whether you need access for repairs or want to upgrade your insulation, Zavza Seal is your go-to crawl space contractor in Queens, NY.
Services We Offer:
- Crawl space access door installation
- Closed-cell spray foam insulation
- Crawl space sealing & waterproofing
- Foundation access cutting & structural support
Get Your Free Crawl Space Estimate Today
Zavza Seal | Queens’ Trusted Crawl Space Contractor
Serving Queens, Brooklyn, Long Island & the Bronx
Call: (631) 980-1800
Visit: www.zavzaseal.com