PreTak

Protects Against Water Intrusion, Chemical Ground Contaminants & Methane Gas

PreTak is a pre-applied HDPE sheet waterproofing membrane combined with a pressure sensitive adhesive backing that mechanically bonds to cast in place concrete and shotcrete in both blindside shoring and underslab applications, 

PreTak can be applied directly to a wide variety of substrates and utilizes a high-density polyethylene (HDPE) sheet that, once installed, provides a tough and durable waterproofing membrane. Combined with a Pressure Sensitive Adhesive (PSA), PreTak becomes fully adhered when freshly placed concrete or shotcrete is applied directly to it, eliminating the potential for lateral water migration.

PreTak (46 mil/1.2mm) is a fully adhered waterproofing sheet membrane consisting of a long fiber HDPE film coated with a PSA gel and protected by a plastic release liner. The edges of PreTak are treated with a 3-inch (70mm) wide pre-adhered seam (selvedge).

Installation is efficient and reliable with a manufacturer-marked adhesive selvedge allowing for a watertight bond at seam overlaps. PreTak delivers superior performance in harsh conditions without the need for specialized equipment, heat or power.

PreTak is City of Los Angeles approved as a gas and methane barrier (LARR #26164) and for shotcrete. 

PreTak has several benefits:

• Surpasses other fully adhered HDPE membrane systems by achieving the ideal blend between value and performance.
• More than 25 years of a successful track record of performance on projects around the world.
• Suitable for a variety of critical building envelope applications, challenging site conditions and contaminated soils.
• Not affected by rain or ponding water.
• Prevents lateral water migration by forming a continuous adhesive bond to poured-in-place concrete and shotcrete.
• Versatile seam options for hydrostatic, non-hydrostatic, durable HDPE withstands puncture and tearing.
• Double width rolls reduce seams and labor.
• Can be applied to blindside/permanent formwork, which allows maximum use of confined and zero-lot-line sites.
• Self-protecting so it can be trafficked immediately after application for follow-on trade work.
• Heat weld capable for unsurpassed watertight seam performance and ground contaminant site protection.

Now that you've seen what PreTak can do, click the blue button below for Tech Specs.