Insulation contractor
Zavza Seal LLC
About Zavza Seal LLC
For homeowners and business owners in Long Island, a dry, safe, and energy-efficient property isn't just a comfort—it's a necessity for protecting your investment and your family's health. At Zavza Seal LLC, we understand the unique challenges that come with the local climate and soil conditions. We are a seasoned general contracting firm built on a foundation of trust, excellence, and a deep commitment to solving the water, insulation, and air quality problems that plague so many buildings in our community.Our journey is driven by a simple, unwavering mission: to provide unparalleled waterproofing, insulation, and mold remediation services. We don't just patch problems; we deliver comprehen...
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Our Services
Basement & Foundation Waterproofing
Is your basement damp, musty, or showing signs of water seepage? In Long Island, where soil conditions and weather can threaten your home's foundation, proactive waterproofing is critical. Zavza Seal provides comprehensive basement and foundation waterproofing solutions designed to protect your property's structural integrity and create a dry, usable space. Our service is for homeowners and commercial property owners who see water stains, efflorescence (white, chalky deposits), cracks in foundat...
Crawl Space Encapsulation & Insulation
A neglected crawl space can be the source of major problems throughout your entire home in Long Island, including high humidity, mold growth, cold floors, and skyrocketing energy bills. Crawl space encapsulation and insulation from Zavza Seal transforms this vulnerable area into a clean, dry, and conditioned space. This service is ideal for homeowners who notice musty odors, see pests or moisture under their home, struggle with allergies, or want to improve their home's overall energy efficiency...
Mold Remediation & Water Damage Restoration
Discovering mold or water damage in your Long Island home or business is stressful and poses real health and structural risks. Zavza Seal's professional mold remediation and water damage restoration service is your trusted solution to safely and effectively restore your property. This service is crucial for anyone dealing with the aftermath of a leak, flood, or persistent moisture that has led to visible mold growth, water stains, warped materials, or persistent odors.Our certified team follows...
Attic & Whole-Home Insulation
Are your energy bills climbing while your comfort in Long Island plummets? Inefficient insulation is often the culprit. Zavza Seal specializes in attic and whole-home insulation services designed to create a consistent, comfortable temperature year-round and significantly reduce heating and cooling costs. This service is perfect for homeowners experiencing drafty rooms, uneven temperatures, ice dams on the roof in winter, or simply looking to increase their home's energy efficiency and value.We...
Basement waterproofing in Long Island
Damp walls, musty smells, and white chalky deposits on a basement wall usually point to water getting in from outside. We start with an inspection to find the real source, whether that is hydrostatic pressure, poor drainage, or a crack. From there we build a system that may include a sump pump with battery backup, interior drainage, crack injections with waterproofing cement, and exterior fixes like downspout extensions, French drains, and regrading. We aim to solve the cause rather than cover t...
Foundation repair in Queens
A cracked or shifting foundation puts the whole structure at risk, so early repair matters. Our crew inspects the walls, footings, and floor to determine what is moving and why, often tied to soil conditions or water pressure. Depending on the damage, we may stabilize the foundation with lally columns, inject cracks, or correct drainage that is undermining the base. Queens homes have their own soil and weather challenges, and we tailor each repair to the property in front of us, explaining each...
Crawl space encapsulation in Brooklyn
A crawl space that stays damp can spread humidity, odors, and cold floors through the rest of the house. Encapsulation changes that. We clear out debris and old insulation, seal the vents, and lay a heavy-duty reinforced vapor barrier across the floor and up the foundation walls. Crack repairs and support columns are handled where needed, and rim joists and walls get insulation to stop heat loss. In Brooklyn homes this keeps out moisture and pests and can noticeably lower heating and cooling cos...
Mold removal in Suffolk County
Visible mold in a home or building in Suffolk County calls for more than a surface wipe. We begin with an inspection and, when needed, mold testing to gauge how far it has spread. The work area is sealed off, air is cleaned with HEPA-filtered scrubbers, and porous materials that cannot be saved are removed. Drying equipment takes out the moisture that fed the growth, and remaining surfaces get antimicrobial treatment. We also handle the process from start to finish and can work with your insuran...
Insulation services in Nassau County
If rooms feel drafty, temperatures swing from floor to floor, or heating bills keep climbing, the insulation may not be doing its job. We offer blown-in cellulose or fiberglass for attics, spray foam for sealing gaps and rim joists, and batt insulation for basement and crawl space walls. Many jobs start with an energy assessment to find where heat is escaping, followed by a recommendation for the right material and depth for your home. Nassau County homes often gain the most from air sealing aro...
Sump pump installation in Bronx
A sump pump is one of the most direct ways to keep a basement from flooding, especially when the water table is high or storms hit hard. We install pumps sized for the space and the water load, and can add battery backup so the system keeps working during a power outage. Our installers set the pit, connect the discharge line away from the foundation, and test the float and pump before we leave. Bronx property owners get a setup that is ready for the next heavy rain.
Water damage restoration
After a leak, flood, or burst pipe on Long Island, the first priority is drying out the structure before mold and rot set in. We inspect the affected areas, use professional dehumidifiers and air movers to pull out moisture, and remove materials that cannot be dried safely. Surfaces are cleaned and treated so the space is back to sound condition. We know the insurance side can be stressful, so we work directly with insurance companies to keep the claim moving and get your home or business restor...
Foundation crack repair in Long Island
Cracks in a foundation wall can let water in and, in some cases, signal structural movement. Our repair starts with figuring out whether the crack is cosmetic, moisture-related, or a sign of shifting. For many cracks we inject high-grade waterproofing material that seals the gap and stops seepage. When the wall is moving, we address the cause with support or drainage correction. Long Island foundations face varied soil and weather conditions, so we match the repair to what we find and leave the...
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Or email directly: [email protected] · +1 631-980-1800
Get in Touch with Zavza Seal LLC
80 Orville Dr Suite 100, Bohemia, NY 11716, United States · +1 631-980-1800