WDS is one of the leading installers of passive fire protection (spray applied fireproofing). We have extensive experience with all fireproofing products on the market. We pride ourselves on being one of the only contractors to spray unique and speciality spaces while achieving any specification and/or rating you require.

We are proud members of the Nation Fireproofing Contractors Association and remain on the cutting edge of the industry.

Wohl Diversified Services are the preferred installer of the below brands. To learn more about each product click the logos below.



An intumescent is a substance that swells as a result of heat exposure, thus increasing in volume and decreasing in density. Intumescents are used to achieve passive fire protection for such applications as firestopping, fireproofing, gasketing and window casings. Such applications are relevant for buildings, offshore constructions, ships and aircraft.


A firestop is a passive fire protection system of various components used to seal openings in fire-resistance rated wall and/or floor assemblies through bounding, which is based on elaborate fire testing as well as environmental testing, in some cases.

Unprotected or unbounded openings in fire separations void the fire-resistance ratings of the fire separations that contain them and thus, both in practical and legal terms, collapse the fire compartments of which these fire separations form a part, which affects the fire safety plan of the entire building. Firestops are specifically designed to restore the fire-resistance ratings of rated wall and/or floor assemblies by bounding the openings through approved firestops.

Wohl DIVERSIFIED fireproofed the WORLD FAMOUS Vivian Beaumont Theater at Lincoln Center  (products used were: Cafco 400, CafCo 500 & Sprayfilm WB5) 


Wohl Diversified Services is certified by the FDNY to provide flameproofing services

Flameproofing is the process of treating materials so that they will not support combustion. Although cellulosic materials such as paper, fiberboard, textiles, and wood products cannot be treated so that they will not be destroyed by long exposure to fire, they can be treated to retard the spreading of fire and to be self-extinguishing after the lighting condition has been removed.

Numerous methods have been proposed for flameproofing cellulosic products. One of the simplest and most commonly used for paper and wood products is impregnation with various soluble salts, such as ammonium sulfate, ammonium phosphate, ammonium sulfamate, borax, and boric acid. Special formulations are often used to minimize the effects of these treatments on the color, softness, strength, permanence, or other qualities of the paper. For some applications, these treatments are not suitable because the salts remain soluble and leach out easily on exposure to water. A limited degree of resistance to leaching can be achieved by the addition of latex, lacquers, or waterproofing agents. In some cases the flameproofing agent can be given some resistance to leaching by causing it to react with the cellulose fiber (for example, urea and ammonium phosphate).

Leach-resistant flameproofing may also be obtained by incorporating insoluble retardants in the paper during manufacture, by application of insoluble materials in the form of emulsions, dispersions, or organic solutions, or by precipitation on, or reaction with, the fibers in multiple-bath treatments. The materials involved are of the same general types as those used for flameproofing textiles and include metallic oxides or sulfides and halogenated organic compounds.