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Deck Waterproofing

FocusX Decks & Framing creates quality outdoor spaces and structural
solutions designed around your home, your needs, and your vision.

Deck Waterproofing

Protect your deck investment in Woodbridge and across Ontario. We deliver precision deck
waterproofing solutions designed around your home, your outdoor space, and your vision.

Explore Our Deck
Waterproofing Services

Whether you have a ground-level entertaining deck, a second-story patio over a living space, or a low-maintenance PVC deck, we customize our waterproofing systems to protect your investment against harsh climate elements.
Composite & PVC Deck Waterproofing

Composite & PVC Deck Waterproofing

Specialized sealing and flashing solutions tailored for modern composite and synthetic materials. Protects critical structural ledger board connections, post penetrations, and rim joists against trapped moisture.

Under-Deck Drainage Systems

Waterproof ceiling and gutter systems installed beneath deck joists to channel runoff water away from your foundation. Creates a completely dry, usable outdoor living or storage space below elevated decks.
under drain
Wood Deck Sealing & Staining

Wood Deck Sealing & Staining

High-performance penetrating sealants and stains for traditional wood decks. Our sealers penetrate deep into timber fibers to repel water from within, resist UV degradation, and prevent cracking, splitting, and rot.

Membrane Waterproofing Systems

Seamless, liquid-applied membranes designed for flat decks, rooftop patios, and elevated balconies. Forms a flexible, continuous rubberized barrier designed to withstand freeze-thaw cycles and UV exposure while acting as a waterproof roof over living areas below.
Membrane Waterproofing (2)
Years Serving Halton & GTA

17

Decks Waterproofed

400+

Membrane Warranty

15-YR

Assessment Response

24HR

SIGNS TO WATCH FOR

How to tell your deck is already letting water through

Most under-deck water damage starts small enough to ignore — until a spring thaw turns it into
a soaked post or a moldy ceiling below. Here is what smart homeowners watch for:

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Decking Age Over 10–12 Years

Most original membranes and waterproofing sealants reach the end of their functional service life around this point.

Standing Water After Storms

Pooling water instead of draining usually points to a slope or drainage problem, not just a surface issue.

Rust or Lifting at Metal Flashing

Flashing is where most leaks originate — corrosion here is an early warning sign of seal breakdown.

Soft Spots & Joist Decay

Spongy subfloor areas or soft timber framing indicate active moisture absorption beneath the deck surface.

Peeling Surface Coatings

Bubbling, flaking, or delaminating topcoats signal trapped moisture vapor escaping from within the wood structure.

Efflorescence & Staining Below

White powdery mineral deposits or dark water stains visible on concrete piers or under-deck ceilings.

OUR PROCESS

From assessment to a deck that sheds water for good

A structured, step-by-step process — no shortcuts on prep, no guessing on site.

Inspection

We check for moisture, drainage, and structural damage.

01

02

Preparation

Damaged areas are repaired and the surface prepared for waterproofing.

Membrane Installation

A waterproof membrane protects the deck from moisture.

03

04

Drainage

Proper slope and drainage channels help direct water safely away.

WHAT'S INCLUDED

Full scope of a deck waterproofing project

Every project is scoped on-site, but here’s what’s typically covered — and the materials we build with:
  • On-site inspection and written scope of work
  • Framing and substrate repair where needed
  • Continuous waterproof membrane applied
  • Flashing at wall, posts, and perimeter joints
  • Sloped drainage and gutter or channel instal
  • Water testing before sign-off
Component
Detail
Membrane Type
Reinforced elastomeric, cold-polymerized liquid system
Membrane Thickness
60–80 mil applied thickness
Drainage Slope
2% minimum, engineered to gutter/channel system
Flashing Material
Pre-finished aluminum or membrane-flashed hybrid
Warranty
15 years material & workmanship coverage

Not sure if it's a repair or a full re-waterproof?

Send us a few photos or book a walk-through — we’ll tell you which one it is before you commit
to either.

(647) 425-0887
Book a Walk Through
WHY HOMEOWNERS CHOOSE US

What actually separates a lasting waterproofing job from a temporary fix

01

Built for Freeze-Thaw, Not Just Rain

Materials and detailing are chosen for Southern Ontario winters — not a generic warm-climate spec.
02

Structure First, Waterproof Second

We repair what’s underneath before we seal it. A membrane over rot only hides the problem.
03

Written, Itemized Quotes

No verbal estimates. You get a line-by-line scope before any work is scheduled.
04

Warranty Backed in Writing

15-year coverage on materials and workmanship, registered to your address after final sign-off.
PROUDLY SERVING THE GTA & BARRIE, ON

What actually separates a lasting waterproofing job from a temporary fix

We provide professional waterproofing services throughout the GTA and Barrie, with solutions designed to address water intrusion, foundation moisture, and drainage concerns. We focus on identifying the underlying issue and providing a practical, long-lasting solution.
  • Toronto
  • Mississauga
  • Brampton
  • Oakville
  • Burlington
  • Milton
  • Vaughan
  • Richmond Hill
  • Barrie
Permits & The Ontario Building Code
Deck construction in Ontario may require a building permit depending on the deck’s size, height, design, attachment to the home, and other project details. Local zoning bylaws may also apply requirements related to setbacks, height, lot coverage, and the placement of structures on your property. Requirements can vary between municipalities across the GTA and Barrie, so it is important to confirm the applicable requirements before construction begins.
 
Focus X Canada can help manage the permit process, including permit submissions, site plan drawings, and inspection scheduling, helping ensure your deck project follows applicable municipal requirements and the Ontario Building Code.
TESTIMONIALS

What Our Clients Say

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FocusX transformed our backyard into a beautiful outdoor living space that exceeded our expectations. From the initial design consultation to the final installation, their team was professional, responsive, and paid close attention to every detail. We couldn’t be happier with the results.

Michael R.
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From planning to completion, the FocusX team kept us informed every step of the way. They were punctual, transparent with pricing, and genuinely cared about delivering a high-quality project. We highly recommend them.

Emily T.
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We hired FocusX to build our custom deck and pergola, and the entire process was seamless. Their workmanship is top-notch, and the project was completed on schedule. We’ve already received countless compliments from friends and family.

Sarah & David L.
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FocusX designed and built the perfect outdoor space for our family. The attention to detail and craftsmanship are outstanding. It’s now our favorite place to relax and entertain guests throughout the summer.

Robert & Amanda K.
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We wanted a deck that would last for years, and FocusX delivered exactly that. They recommended quality materials and built everything.

David Chen
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We chose FocusX because of their reputation, and they certainly lived up to it. The crew was knowledgeable, respectful, and completed the project exactly as promised. The finished deck is beautiful, functional, and built to last.

Daniel P.
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INVESTMENT

What affects the cost of
deck waterproofing

Deck Size & Accessibility

Square footage and how easily materials and equipment can reach the work area.

Structural Condition

Whether framing, joists, or ledger boards need repair before membrane installation.

Drainage Complexity

Whether an existing slope and gutter system can be reused or needs to be rebuilt.
How long does it take to build a custom deck?
Yes, seller and in-house layers never pay the platform. Dealers pay a fixed platform fee — and only when they win. You get offers free of charge, no matter the outcome.
Most liquid-applied waterproofing membranes require 24 to 48 hours to fully cure, depending on ambient outdoor temperatures and humidity levels across Ontario.
FAQ

Frequently Asked Questions

Clear answers to help you plan your renovation with confidence.