WPM301 is an all purpose membrane, is a high solids waterborne, low VOC, tough and durable, rubberized coating. Its superiority over similar products stems from the coatings high tensile strength, tenacious adhesion to practically any substrate, abrasion resistance and long term weather-ability.

WPM301 with its unique resin and extender structure provides the versatility for diverse applications such as waterproofing materials exposed to the elements, corrosion resistance of exposed steel objects such as boat trailers. It can also be used as a quick and easy, snatch and mar resistant paint-able liner for truck beds and any other surface that is exposed to rough and heavy use. The coating can also be used as a sealer to fill narrow cracks and surface for a more positive grip on tools and equipment and other commercial and industrial structures, work areas, etc.

WPM301 is lead-free, fume and odor free and does not contain ingredients considered hazardous to humans, animals or the environment.

Application | WPM301 Coverage | Cleanup | WPM301 Data Sheets


WPM301 General Info

WPM301 is a unique waterbased coating that air dries and cures to a durable weatherproof, waterproof and heat resistant film. It has outstanding adhesion to many everyday surfaces including concrete, brick, stucco, wood, ceramics and textiles. In addition to excellent water repellency, coated surfaces also demonstrate re resistance and improved shrink resistance. The lm has good tensile strength and abrasion resistance and can tolerate complete submersion for weeks at a time without delamination or coating failure. WPM301 with its unique resin structure provides the versatility for diverse roofing applications, moisture permeation from perimeter walls, moisture intrusion in cellar and basement walls, tank or vessel liner for non-corrosive liquids and structures that may be exposed to intermittent submersion.

Although WPM301 is a non-hazardous coating, Liquiguard is not recommending its use as a liner for potable water as no testing has been done in this regard. WPM301 can be used as a topcoat over other coatings where water permeation or water puddles can present a problem such as swelling and delamination of the roof coating leading to leaks and failure. It offers an excellent replacement to the hazardous and heat absorbing tar and pitch materials currently being used to seal leaks or protect objects exposed to submerged conditions.

WPM301 General Application

WPM301 may be applied by brush, roller or low pressure airless sprayers. When applying multiple coats allow the rst coat to become dry to the touch before applying additional coats. WPM301 cures via air drying and at 77°F and 50% RH the coating will be dry to the touch in about 30 minutes. The curing process continues over 48 hours to achieve optimal properties. The surface to be coated should be clean and free of grease, oils and other debris. Do not apply at temperatures below 50°F or above 90°F, or if rain or heavy dew is imminent. Avoid heavy buildup, puddling, and overlapping.


WPM301 is a milky liquid that dries to a semi-clear or translucent lm. Coverage per gallon will be dependent on the porosity of the surface the coating is being applied to and the ultimate dry lm thickness desired. In general, WPM301 should yield on average about 350 square feet per gallon and the recommended minimum of two coats will yield a DFT of 2 to 3 mils (approx 0.5 mm). WPM301 is formulated to protect against the formation and growth of mold, mildew and algae.


Clean spills and spatters immediately with clean water. Clean hands and tools immediately after use to prevent the coating from setting up as the dry coating will be dicult to remove. If the application is via spraying, flush spray equipment with sucient amount of clean water to prevent any residue ofWPM301 staying in the system and clogging up the mechanism.