Waterproofing Done Right!
Deck & Balcony Waterproofing

Protect Your Outdoor Spaces from Moisture Damage in Long Island, Brooklyn, Queens & The Bronx

At Zavza Seal, we specialize in deck and balcony waterproofing to help property owners preserve the value, appearance, and safety of their homes. Whether you’re in Long Island, Brooklyn, Queens, or The Bronx, our team uses industry-leading materials and techniques to keep your outdoor living spaces dry and durable year-round.

Why Deck & Balcony Waterproofing Matters

Outdoor spaces are constantly exposed to the effects of weather. Without proper waterproofing, decks and balconies can suffer from:

  • Water damage
  • Wood rot or metal corrosion
  • Cracking, efflorescence or delamination
  • Mold and mildew growth
  • Structural failure over time

A professionally applied waterproof membrane extends the life of your deck or balcony, protects your investment, and keeps your family safe.

Our Deck & Balcony Waterproofing Services

We provide comprehensive waterproofing for various deck and balcony surfaces, including:

  • Concrete decks
  • Wood decks
  • Tile balconies
  • Overoccupied space balconies (e.g., over living rooms, garages)

Our multi-step process ensures a durable seal that withstands the elements.

Our Waterproofing Process Includes:

1. Inspection & Assessment
We assess existing damage, substrate conditions, and moisture levels.

2. Surface Preparation
 We clean, repair cracks, remove deteriorated materials, and prime the surface.

3. Application of Waterproofing Membrane
We use liquid-applied or sheet membranes designed for horizontal surfaces. Brands include high-grade polyurethane and elastomeric coatings.

4. Drainage Solutions
We ensure proper slope and drainage to prevent standing water and leaks.

5. Topcoat & UV Protection
We apply a final topcoat to protect against UV rays and wear-and-tear.

Serving Long Island, Brooklyn, Queens & The Bronx

Zavza Seal has proudly served New York property owners for over 20 years. We understand local building codes, weather challenges, and structural needs specific to:

  • Oceanfront homes in Long Island
  • Urban rooftops and balconies in Brooklyn
  • Multi-family and brownstone structures in Queens
  • High-rise terraces and patios in The Bronx

Whether it’s a new build or a repair project, our team brings unmatched expertise in deck and balcony waterproofing solutions.

Benefits of Waterproofing Your Deck or Balcony

  • Prevent water damage and leaks
  • Extend the life of your structure
  • Avoid costly repairs and wood rot
  • Improve safety and slip resistance
  • Enhance appearance and increase property value

Signs You Need Waterproofing

If you notice any of the following, it’s time to waterproof:

  • Water stains or efflorescence (white chalky residue)
  • Cracks or surface peeling
  • Soft or spongy deck boards
  • Rusting rails or supports
  • Leaks in rooms below the deck or balcony

Types of Deck & Balcony Waterproofing Systems We Offer

We offer tailored solutions based on surface type, use, and budget:

  • Liquid-Applied Membranes
    Best for concrete or plywood surfaces. Applied in layers and form a seamless, flexible barrier.
  • Sheet Membranes
    Durable and ideal for new construction or major renovations. Includes reinforced seams for extra protection.

  • Elastomeric Coatings
    Flexible, UV-resistant coatings for horizontal walking surfaces. Great for pedestrian decks.

  • Traffic Coatings
    For balconies or decks with foot traffic and furniture. Adds durability and slip resistance.

Deck & Balcony Waterproofing Cost

The cost of deck and balcony waterproofing depends on several key factors. First, the size of the area plays a major role; larger decks or balconies will naturally require more materials and labor. The condition of the surface is also important, as damaged or uneven areas may need to be repaired before waterproofing can begin. Additionally, the type of waterproofing system used, such as membrane, epoxy, or sealant, will influence pricing. Accessibility and the amount of preparation work required can further affect the overall cost, especially in hard-to-reach or elevated areas where more labor time is needed. In New York, the average cost ranges from $8 to $15 per square foot, which includes both materials and labor.
Free estimates are available, we’ll assess your deck or balcony and provide a detailed, no-obligation quote customized to your project.

Why Choose Zavza Seal?

🔹 Over 20 years of waterproofing experience
🔹 Fully licensed & insured in NYC & Long Island
🔹 Use of premium waterproofing systems
🔹 Knowledge of local building requirements
🔹 Trusted by homeowners, property managers & builders

FAQ

Can I waterproof my deck or balcony myself?

While there are DIY products, professional waterproofing ensures long-term durability and prevents future structural issues.

Most systems last 10–20 years with proper maintenance.

Yes! We repair cracks and structural problems before applying the waterproofing system.

Some coatings are clear or can be tinted. We offer options to match your aesthetic preferences.

Yes, most waterproofing systems come with a 5–10 year warranty, depending on the system used.

The process typically takes 1–3 days, depending on the size of the area and the condition of the surface.

We work on wood, concrete, tile, and composite decks and balconies.

Yes, our waterproofing systems are designed to withstand UV exposure, rain, snow, and temperature changes.

We’ll handle all necessary prep work, including cleaning, repairs, and surface priming.

Absolutely. Waterproofing prevents water penetration, reducing the risk of mold, mildew, and rot.

Depending on the system and foot traffic, a maintenance coat may be needed every 5–10 years to maximize protection.

Yes, once cured, our waterproofing products are safe and non-toxic.

Yes, we specialize in all types of elevated structures and ensure proper drainage and sealing.

Get a Free Quote Today

Don’t wait until water damage ruins your outdoor space. Contact Zavza Seal for expert deck and balcony waterproofing in Long Island, Brooklyn, Queens, and The Bronx.

📞 Call us today at (631) 980-1800
📝 Or request your free estimate online now!


Zavza Seal – Your Trusted Waterproofing Experts in New York
Deck & Balcony Waterproofing | Local & Reliable | Licensed & Insured

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