Zinsser Watertite®

About this product:

Guaranteed to keep water out and contains a biocide that protects the dried coating against fungal degradation for a minimum of 5 years. It can easily be applied to wet or dry surfaces creating a smooth, non-gritty finish.

Technical Information

Touch Dry

1 hour


4 hours


2m² per litre



Key Benefits

  • Guaranteed to stop up to 34psi of water pressure
  • Prevents fungal degradation on the paint film for 5 years
  • Smooth, non-gritty finish applies easily to wet or dry wall
  • Ideal for basements and other interior & exterior surfaces
  • Low odour solvent-based formula

Product Information

  • Sizes


Application Method

To ensure against accumulation of solvent vapours, be sure to open all windows and doors. Use a nonsparking exhaust fan to provide air movement. Extinguish all flames and pilot lights at water heaters and heating systems. Turn off air/heating systems at thermostat. Walls can be damp, but must be free of active water leaks. Stir thoroughly before and during application. Do not thin.

Apply when air and surface temperatures are 10°C or higher. Do not apply if heavy rain is expected within 24 hours. Liberally apply the first coat using a thick polyester bristle brush, or by rolling a small section (1m x 1m), and then using a brush to work the coating into the pores of the masonry. Apply as much paint as necessary to produce a continuous, pinhole free film. Use a 20-25mm nap roller for unpainted, porous surfaces, and an 18mm nap roller for smooth or previously painted surfaces. The second coat can be brushed or rolled. Do not over spread.

Watertite® is a two coat system. The first coat primes and seals the surface. The topcoat completes the sealing process to ensure protection against water intrusion.