Product Description

Vulkem® 350 is a single-component polyurethane basecoat that possesses tenacious adhesion to clean and dry concrete, wood and metal. Vulkem 350 is a versatile basecoat that can be applied underneath any Vulkem topcoat or used under tile. Vulkem 350 is available in two viscosities, R (roller grade) for vertical or horizontal applications and SL (self-leveling) for horizontal applications.

Basic Uses

Vulkem 350 is ideal for plazas, vehicular decks, pool and recreation decks, balcony terraces, mechanical rooms, restrooms, kitchens, stadiums, ramp areas and elevated plenums. Vulkem 350 may also be used as a waterproofing membrane in untreated, non-potable water retention tanks (as commonly used for fire-suppression). Please contact Technical Services for additional information on applications. 

Compatible Vulkem Intermediate and Topcoats

Tremco offers a complete line of time tested, compatible Vulkem intermediate and topcoats that form a strong interlaminary bond to the Vulkem 350. Compatible topcoats are Vulkem 351, 351NF, 346, 951NF and 950NF (indoor only for 950NF). Compatible intermediate coats are Vulkem 345
and 950NF. These Vulkem coatings, when used in conjunction with the recommended aggregate, create a tough, aesthetically pleasing, abrasion-resistant wearing surface over the Vulkem 350 basecoat. Additionally, Vulkem 350 is ideal for use under tile in bathrooms, kitchen, on balconies and other applications. Tremco recommends the use of Euclid Chemical Company cementitious bedding materials for bonding/setting tile on Vulkem 350.


Vulkem 350 is available in a 5-gal (18.9 L) pail or 55-gal (208 L) drum.