Compotite Corp. was established in Los Angeles, CA back in 1938. We pioneered the membrane industry and patented the very first shower pan. Since our start, we pride ourselves on being an industry leader and innovator of the most technologically advanced products. Our commitment is quality! We manufacture membranes that are used for waterproofing, crack isolation and sound abatement. Offering shower solutions have been our mission from day one. Get ready to enjoy many new innovative products coming to a dealer or distributor soon.

COMPOSEAL Blue Vinyl Shower Pan was introduced in 1979. Because of its popularity, ease of installation and economic price, it replaced the old Compotite completely by 1985. COMPOSEAL is made from high density PVC resins and calendered into a strong waterproof, puncture resistant, chemical resistant and mildew resistant membrane. It meets or exceeds the requirements of the three major plumbing codes: UPC/IAPMO, SBCCI, BOCA and the new International Plumbing Code. It also meets the ASTM and Ceramic Tile Institute requirements for non-bonded waterproof membranes. The required logos for these agencies are printed every 2 feet on the membrane for easy on-site certification by the building inspector. COMPOSEAL is sold through more than 450 tile and plumbing wholesale distributors in 100 foot rolls, 4, 5 or 6 feet wide, in 40 mil gauge ( 40/1000" or 1/25" thick). COMPOSEAL 30 mil is also available in UPC code areas.

In 1992, COMPOSEAL GOLD 40 mil bondable waterproof and crack suppression membrane for use with thin-set tile or marble installations was added to Compotite's product line. COMPOSEAL GOLD meets the American National Standard for Waterproofing Membranes as well as the Standard for Crack Isolation Membranes for Thin-set Ceramic Tile and Dimensional Stones Installations, ANSI A118.10 and ANSI A118.12, and is sold in 90 foot rolls, 5 feet wide through tile distributors across the country.

In 1998, COMPOSEAL WHITE GOLD 50 mil was introduced to give added sound control protection, providing a sound rating of IIC 66 and STC 66 in above grade ceramic tile installations over a 6” concrete slab floor above a suspended ceiling.

Services Provided
Waterproofing, Crack Isolation and Sound Abatement. We are excited to share that we are introducing some new innovative products later this year. Please be on the lookout and inquire within your local plumbing wholesaler or flooring supply house. Visit our website at or give us a call.

Areas Served
North America
Contact: Mark MacDonald
Location: 355 Glendale Blvd.
Los Angeles, CA 90026
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