Deck Coatings

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Keep Your Decks Waterproof and Beautiful for Years

Anytime a deck, walkway or stair landing attached to a building, the deck must be waterproofed. By waterproofing, we mean not only the surface of the deck, but most importantly, the transition where the deck meets the wall. If water were to seep in through any cracks or holes in this area, water may penetrate the structural components of the building, causing wood rot and mold. Water penetration into the building’s structure can cause very expensive damage, which require the services of a structural engineer.

Water penetration can be avoided by installing and maintaining a waterproofing system. Waterproof decks consist of several layers, including flashing to seal off the area where the deck meets the wall of the adjacent building. Decks should be inspected every 3-5 years, depending on the system installed. Any small cracks should be repaired at this time, and the top coating should be reapplied (referred to as resealing), to preserve the waterproofing integrity and extend the life of the decks.


Some of the different types of coatings that we provide include:

  • Dex-O-Tex Weatherwear Systems
  • Elastomeric Pedestrian Coatings
  • Elastomeric Vehicular Coatings
  • Urethane Deck Coatings
  • Mer-Kote Products Mer-Ko Weather Deck Systems
  • Elastomeric Pedestrian Coatings
  • Elastomeric Vehicular Coatings
  • Urethane Deck Coatings
  • Excel-Coat Metal Lath Systems
  • UPI Urethane Deck Coatings
  • Dexcelent Systems
  • Pli-Dek Urethane Deck Coatings
  • Decorative Pool Texture Coatings

balcony waterproofing

WICR Waterproofing & Decking. has extensive experience with the different types of deck coating systems. Each one has its own advantages and disadvantages, and there is no single solution that will work equally well for every property. When we visit your property for your initial consultation, we can evaluate the nature of your project in order to help you choose the ideal solution for you. The two major types of coatings include:

Slip Sheet Systems
Slip sheet deck coatings such as Mer-Kote and Dex-O-Tex are only adhered to the decking substrate at the perimeter of the deck. The slip sheet “floats” over cracks in the subsurface, thereby minimizing any cracking to the top surface due to movement or shifting in the subsurface. This system also serves to protect the subsurface from any water or moisture intrusion. Slip sheet systems are known as the Cadillac of waterproofing systems and are especially popular in California due to their ability to resist damage during an earthquake.

Direct Bond Systems
Direct bond systems including the polyurethane coatings from UPI are directly adhered to the decking subsurface via chemical attachment. Although these systems elongate substantially, they are prone to bubbling, potentially resulting in failure of the deck. Polyurethane coatings use a fluid-applied bond, though this is not the only type of direct bond system. Another is metal lath direct bond systems. These are cement-based and are directly adhered to the decking subsurface using metal lath – essentially a wire latticework – which is stapled to the subsurface. Multiple coats of waterproofing materials are then applied over the lath. Significant movement of the subsurface may transmit through to the finish coats, resulting in cracks to the surface.

After applying the deck coating surface, we additionally install any necessary systems such as metal flashing to seal off the edges of the deck and bond it to the adjacent structure. It is also often necessary to install other details such as scuppers to evacuate water from the deck; stair nosing on the edges of stair steps; and corner wall-to-deck metal. At the end of the process, we can install a texture and UV-resistant color finish over the surface of the deck according to your specifications and preferences. The final result is a waterproof balcony or deck on which you can enjoy the outdoors with your family or guests.