Stains on the ceiling below
Brown rings under the deck are the most common sign water is getting through.
Roof decks · Venice, CA
Roof Deck Waterproofing in Venice, CA, Same-Day Leak Checks
A rooftop deck with an ocean breeze is one of the best parts of living in Venice. A deck that leaks into the bedroom below is one of the worst. Our roof deck waterproofing team installs walkable membranes and deck coatings on decks and balconies across Venice, CA. Book a same-day leak check, or call our 24 hour line for emergency help in a storm.
- Walkable membranes
- Leaks stopped below
- Decks and balconies
- Same-day leak checks
Warning signs
Signs Your Rooftop Deck Is Letting Water In
Deck leaks often show up inside long before you see anything wrong on top.
Cracks in the deck surface
Hairline cracks in a coating or tile let water reach the wood under the deck.
Soft spots underfoot
A deck that feels spongy may have rotted wood below the surface.
Wet floors by the door
Water at the sliding door often means the threshold flashing has failed.
Rust at railing posts
Posts that go through the deck are a top source of hidden leaks.
Water that will not drain
Puddles that sit for days mean the deck has lost its slope or the drain is blocked.
Your options
Roof Deck Waterproofing Systems We Install
The best system depends on how you use the deck and what you want on top of it.
| System | Walk on it directly? | Best for |
|---|---|---|
| Walkable vinyl or PVC deck membrane | Yes | Decks you use every day, with a slip-resistant finish |
| Liquid-applied deck coating | Yes | Balconies and decks with many corners and details |
| Membrane under pavers on pedestals | Pavers protect it | Modern decks with stone or concrete pavers |
| Membrane under a wood or composite deck | Deck boards protect it | Decks with a warm wood look |
The details
The Small Details That Keep a Roof Deck Dry
Most deck leaks do not start in the middle of the deck. They start at the edges and openings, where different parts of the house meet.
- Slope to drain: The deck must tip slightly toward a drain or scupper so water never sits.
- Door thresholds: The membrane must turn up and under the door with proper flashing.
- Wall flashing: Waterproofing runs up the wall behind the stucco or siding.
- Railing posts: Every post that goes through the deck gets its own sealed boot or is mounted on the side.
- Drains: Drains are clamped into the membrane and kept clear of leaves and sand.
The rest of your roof matters too. A deck often sits next to a flat roof, so we check both. See our flat roof services and our leak tracing visits for hard-to-find leaks.
How we fix it
How We Rebuild a Leaking Roof Deck
Patching the surface rarely fixes a deck leak for long. We work from the wood up.
Open and inspect
We remove the failed surface and check the plywood for rot and loose spots.
Repair and slope
Soft wood is replaced, and we correct the slope so water runs to the drain.
Flash every edge
New flashing goes in at walls, doors, drains and posts before the membrane.
Install and test
The waterproof system goes down, then we water test the deck before you put furniture back.
Related help
Deck Help, Materials and Nearby Areas
These services often go along with deck waterproofing. We waterproof rooftop decks in these nearby areas too.
Related roofing services
Brands for this job
Nearby areas we serve
Have more questions? Read our roofing tips and guides, learn about our team or send us a message.
Deck questions
Roof Deck Waterproofing FAQs
What owners of rooftop decks and balconies ask us most.
How long does roof deck waterproofing last?
A quality walkable membrane or deck coating often lasts many years. Sun, foot traffic and furniture wear it down, so a top coat refresh now and then keeps it strong.
Can you waterproof under my existing tile deck?
Often the tile has to come up so we can install a proper membrane underneath. Putting a coating over cracked tile rarely holds for long.
Do railing posts really cause leaks?
Yes. Any post that goes down through the deck makes a hole in the waterproofing. We seal each post with a boot or move the posts to the side of the deck.
Can planters and hot tubs sit on a waterproofed deck?
Yes, with planning. Heavy items need the right structure and a protection layer so they do not damage the membrane. We plan for them before we install.
Enjoy your deck again
Stop Roof Deck Leaks for Good
Book a deck leak check. We will find where water is getting through and give you a written price for a walkable, waterproof deck.