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Product Description

UGL DRYLOK® Extreme Latex Masonry Waterproof Paint

Drylok Extreme Waterproof Paint is the Next Generation in waterproof coatings. Designed for interior, exterior, above or below grade masonry walls, basement walls, retaining walls, foundations, landscape walls, cinder blocks, concrete blocks, bare concrete swimming pools, stucco and brick.

Ideal for areas where a smooth, bright white finish is desired. It is formulated with special features such as Flexible Encapsulated Polymers and the incorporation of a non-hazardous biocide which helps resist mildew growth on the paint film. Stops 15 psi (greater than a wall of water 33 feet high). Features a Fully Transferable 15-year warranty.

Comes standard in 1 gallon and 5 Gallon white pails. All sizes available on international orders.

Where is Drylok Extreme used?

  • Basement walls
  • Retaining walls
  • Water fountains
  • Bare concrete swimming pools
  • Foundations
  • Fish ponds
  • Non-potable concrete water tanks
  • Underground garages

Why Drylok Extreme Waterproof Paint?

  • Waterproof protection warrantied for up to 15 years
  • Bright white, smooth finish
  • Resists mildew, mold growth on the dry paint film
  • Reduces radon gas penetration
  • Withstands 15 lbs of hydrostatic pressure, greater than a wall of water 33′ high. ASTM D-7088 Resistance to Hydrostatic Pressure
  • Passed 98 mph (160 kph) test. ASTM D-6904 Resistance to Wind Driven Rain.
  • Breathable film – does not trap moisture in masonry
  • Clean up with soap and water
  • Applies easily with brush, roller or sprayer
  • Complies with all current VOC regulations
  • Can create custom colors with up to 2 oz colorant per gallon
  • Can topcoat with a different paint if desired

Technical Information

Colors White (can be tinted to any pastel color)
 Coverage rate (2 coats required)  Average 75-100 per coat depends on porosity
 Recommended film thickness 13-21 mils wet (325-525 microns)
Sheen Flat
VOC < 100 g/L
Solids by volume 55% – 57%
Solids by weight 64% – 66%
pH 9.0 – 9.9
Time to dry 2 hours
Time to recoat 3 hours
Dry time to apply decorative latex paint topcoat 24 hours (prolonged slightly in humid/damp and cool conditions)
Shelf Life 5 years
What will it protect Poured concrete, masonry, cinder and concrete blocks, stucco, brick

Application Instructions

Surface must be clean and free from dirt, dust, grease, oil, form release compound or paint. Patch all holes or cracks and the floor/wall joint with DRYLOK FAST PLUG® or a fast setting hydraulic cement, and smooth the patch evenly with the surface around it. Check the joint where the floor and wall meet and fill any breaks with DRYLOK FAST PLUG®.

EFFLORESCENCE, a white, powdery, crystal-like deposit visible on the masonry surface must be removed.

DRYLOK ETCH or muriatic acid, used according to manufacturer’s directions, are effective efflorescence removal agents. All masonry surfaces are subject to occurrences of efflorescence.

Old paint in poor condition must be removed by wire-brushing, sand blasting or by using other suitable means May be applied on slightly damp surfaces, but best results are obtained when applied over dry surfaces. For best waterproofing results, wait for a dry (rain-free) period.

STIR THOROUGHLY BEFORE AND DURING APPLICATION. DO NOT THIN. Paint only when air and surface temperatures are 50°F or higher. Apply Latex Base DRYLOK EXTREME Masonry Waterproofer directly on bare masonry. Apply first coat with DRYLOK BRUSH or good quality nylon bristle brush working the WATERPROOFER into the pores of the masonry - avoid excessive brushing (see COVERAGE). APPLY TWO COATS. Allow to dry 3 hours between coats. The second coat may be applied by brush, roller or spray. For information on spray application, write UGL and ask for Spray Specification Sheet D-88 or visit

If leaking is still present after two coats, it indicates that pores or pin holes are still open. Paint these areas again. When painting the inside of concrete fish ponds and nonpotable water tanks, allow Latex Base DRYLOK EXTREME Masonry  Waterproofer to dry at least one week, fill with water. If desired, a high quality latex paint can be applied over DRYLOK after 24 hours for decorative purposes.

Drylok Extreme Data Sheet

Drylok Extreme SDS

Drylok Extreme Spray Specs

Drylok Extreme Brochure