Hidden membranes that protect the structure below

Waterproofing Under Tile, Pavers & Stone in Los Angeles

Tile, pavers, stone, and grout create a finished walking surface, but they do not replace the waterproofing assembly beneath them. All Weather Waterproofing & Coating installs and repairs membranes, transitions, and drainage details that help stop hidden moisture from reaching the deck or occupied space below.

  • 25+ years of waterproofing experience
  • 110+ five-star Yelp reviews
  • Many positive Google reviews
Waterproof membrane installation beneath an exterior finished deck surface
The waterproofing layer beneath tile, stone, or pavers must remain continuous at drains, walls, and penetrations.

Protection below the visible finish

Why Tile, Pavers and Stone Are Not Waterproof by Themselves

Grout joints, setting materials, surface cracks, and open transitions can admit water even when the finished deck appears solid. Once moisture passes below the surface, it may become trapped above the substrate or move laterally before showing as a stain or leak.

A successful assembly combines the finished material with a compatible waterproof membrane, correctly detailed edges and penetrations, and a dependable path for water to reach drains or perimeter outlets. Problems often develop where the membrane ends, changes elevation, or meets doors, walls, posts, planters, and drains.

We evaluate the full assembly—not only the visible tile or stone. The recommended scope depends on access, existing layers, substrate condition, drainage, and whether the failure is localized or widespread.

Exterior deck substrate prepared for waterproofing beneath a finished surface
The substrate and drainage plane must be prepared before the finished surface is installed.

Know the warning signs

Signs of Waterproofing Failure Beneath Finished Surfaces

Moisture below tile, pavers, or stone may remain hidden until damage has spread.

  • Loose, hollow-sounding, cracked, or lifting tile and stone
  • Deteriorated grout, open joints, or recurring surface cracks
  • Stains, drips, peeling paint, or dampness below the deck
  • Efflorescence or white mineral deposits at joints and edges
  • Standing water, blocked drainage, or slow-drying areas
  • Leaks near doors, drains, planters, railings, or wall transitions
  • Uneven pavers, settlement, or water collecting below the finish
  • Repeated surface sealing that has not stopped the leak

Professional waterproofing solutions

Waterproofing Solutions for Tile, Pavers and Stone

Each assembly requires coordination between the membrane, drainage, substrate, and finished surface.

Under-Tile Waterproofing

Membranes are integrated below tile assemblies to protect decks, balconies, patios, and occupied areas underneath.

Waterproofing Under Pavers

Waterproofing and drainage layers are coordinated beneath pedestal, sand-set, or other paver assemblies as conditions require.

Natural Stone Decks

Stone finishes receive compatible below-surface protection and carefully detailed transitions, edges, and penetrations.

Drain and Scupper Details

The waterproofing plane is connected to drains, scuppers, and outlets so water can leave the assembly.

Thresholds and Wall Transitions

Doors, walls, curbs, posts, planters, and changes in elevation are treated as critical waterproofing locations.

Leak Repair and Restoration

Failed areas are evaluated to determine whether a localized repair is possible or the finish must be removed for broader access.

A complete, condition-based approach

Our Below-Surface Waterproofing Process

The membrane must be installed as a complete system before the decorative finish conceals it.

  1. EvaluateWe review the finished surface, substrate, drainage, transitions, penetrations, and visible moisture patterns.
  2. ExposeFinished materials and failed layers are removed where access is needed to reach the waterproofing plane.
  3. PrepareThe substrate, cracks, edges, drains, and transitions are repaired and prepared for the selected membrane.
  4. WaterproofThe membrane and reinforcing details are installed continuously across the surface and vulnerable locations.
  5. CoordinateDrainage and finish requirements are reviewed before tile, pavers, or stone are restored or installed.

Residential and commercial experience

Finished Deck Waterproofing for Residential and Commercial Properties

We waterproof tile, paver, and stone surfaces for homes, balconies, patios, pool-adjacent decks, apartment buildings, condominiums, HOAs, podium decks, courtyards, and commercial properties. Our work focuses on the hidden protective assembly that supports the visible finish.

For an existing leak, the investigation may require selective removal to understand the layers below. For a new installation or remodel, waterproofing should be coordinated before the finish is installed so drains, thresholds, slopes, walls, and penetrations can be incorporated correctly.

25+Years of waterproofing experience
110+Five-star reviews on Yelp
LocalCoastal and inland Los Angeles service

Local waterproofing service

Waterproofing Under Tile, Pavers and Stone Across Los Angeles

We serve Los Angeles communities where exterior finished decks face seasonal rain, irrigation, ocean air, strong sun, daily traffic, and movement between different materials.

  • Santa Monica
  • Beverly Hills
  • Malibu
  • West Hollywood
  • Marina del Rey
  • Manhattan Beach
  • Van Nuys
  • Woodland Hills
  • Calabasas
  • Greater Los Angeles

Common questions

Waterproofing Under Tile, Pavers & Stone FAQs

Are tile and grout waterproof?

No. Tile and stone can shed surface water, but grout joints, cracks, transitions, and setting materials can admit moisture. A separate waterproofing assembly is needed beneath exposed exterior finished surfaces.

Can you repair a leak without removing all the tile or pavers?

Sometimes a localized repair is possible, but access depends on the location and extent of the failure. Widespread membrane problems, trapped moisture, or damaged substrate may require removal of a larger finished area.

What causes leaks under pavers?

Common causes include failed membranes, open transitions, punctures, poorly integrated drains, blocked drainage paths, settlement, and water entering around walls, doors, planters, posts, or penetrations.

How is a membrane connected to a drain?

The waterproofing system must be integrated continuously with the compatible drain or outlet detail. The exact method depends on the drain type, membrane, substrate, and deck assembly.

Can you waterproof beneath natural stone?

Yes. Natural stone deck assemblies can incorporate compatible membranes and drainage details beneath the visible finish. The stone, setting method, substrate, and exposure must be considered together.

Which areas do you serve?

Our service area includes Santa Monica, Beverly Hills, Malibu, West Hollywood, Marina del Rey, Manhattan Beach, Van Nuys, Woodland Hills, Calabasas, and surrounding Los Angeles communities.

Stop Hidden Leaks Beneath Tile, Pavers or Stone

Tell us where the finished surface is located and whether you see loose material, cracked grout, staining, standing water, or a leak below. We can help determine the next step for investigation, repair, or a new waterproof membrane.

Serving Los Angeles and nearby communities with more than 25 years of waterproofing experience.