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EPRO PreTak Heat Weld HDPE Waterproofing Membrane, 46 mil Pre-Applied Sheet, 7'10" x 65'6" Roll
Regular price $1,395.00EPRO PreTak Heat Weld HDPE Waterproofing Membrane, 46 mil Pre-Applied Sheet, 7'10" x 65'6" Roll
EPRO PreTak is a pre-applied 46 mil (1.2 mm) HDPE sheet waterproofing membrane with a pressure sensitive adhesive backing that bonds to cast-in-place concrete and shotcrete. This heat weld version comes as a 7 ft 10 in x 65 ft 6 in roll for blindside shoring and underslab applications. Double-width rolls reduce seams and installation labor.
Key Features:
- Fully adhered bond: The pressure sensitive adhesive mechanically bonds to freshly placed concrete or shotcrete, preventing lateral water migration.
- Heat welded seams: Supplied without adhesive selvedge so seams can be heat welded for watertight performance and protection against ground contaminants.
- 46 mil HDPE film: Long fiber HDPE film coated with PSA gel and protected by a plastic release liner.
- Double width rolls: Wide roll format reduces the number of seams and labor on the job.
- Weather tolerant: Withstands all types of weather before concrete is applied, including harsh conditions and contaminated soils.
- LA City approved: City of Los Angeles approved as a waterproofing and methane barrier (LARR #26164) and for shotcrete.
- Proven track record: More than 25 years of successful project performance worldwide.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | EPRO |
| Sell unit | 1 roll, 7 ft 10 in x 65 ft 6 in |
| Product line | EPRO PreTak pre-applied waterproofing membranes |
| Material | High-density polyethylene (HDPE) film with pressure sensitive adhesive (PSA) gel backing |
| Dimensions | 7 ft 10 in x 65 ft 6 in roll |
| Thickness | 46 mil (1.2 mm) |
| Finish / texture | Long fiber HDPE film with PSA gel, plastic release liner |
| Application | Pre-applied vertical and horizontal; blindside shoring and underslab |
| Approvals | City of Los Angeles approved waterproofing and methane barrier, LARR #26164; approved for shotcrete |
| Intended use | Fully adhered underslab and blindside waterproofing against cast-in-place concrete and shotcrete |
Coverage & How Much You Need:
One roll covers approximately 515 sq ft of membrane area (7'10" x 65'6"), before seam overlaps and details. Double-width rolls reduce seam count; plan overlaps per the EPRO detail drawings for underslab assemblies, side and end laps, and penetrations.
Fit and Compatibility:
PreTak is used within EPRO waterproofing systems for underslab and blindside shoring applications; manufacturer detail sheets cover underslab assemblies, with and without protection slab, seams, penetrations and elevator pits. The heat weld version pairs with heat welding equipment for seams; the adhesive selvedge variant is a separate option. Protection course, detail accessories and terminations are specified within the EPRO system.
Frequently Asked Questions (FAQ):
Q: What is included in one roll?
A: One roll of 46 mil PreTak heat weld membrane measuring 7 ft 10 in x 65 ft 6 in, with plastic release liner over the PSA gel backing.
Q: How is this version different from the adhesive selvedge version?
A: This heat weld version omits the adhesive selvedge so that seams can be heat welded; the alternative PreTak option has a manufacturer-marked adhesive selvedge for overlap bonding.
Q: How much area does a roll cover?
A: At 7'10" x 65'6", a roll provides roughly 515 sq ft before laps and waste; account for overlaps shown in EPRO detail drawings.
Q: When does the membrane bond to concrete?
A: It fully adheres when freshly placed concrete or shotcrete is cast directly against the adhesive face, eliminating lateral water migration.
Q: Does it resist methane?
A: Yes, it is City of Los Angeles approved as both a waterproofing and methane barrier under LARR #26164.
Q: Can it be left exposed to weather before the pour?
A: Yes, PreTak withstands all types of weather before concrete placement and suits contaminated soils and challenging site conditions.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
PreTak heat weld is the choice on blindside shoring and underslab work where welded seams and methane or contaminant resistance are specified. Roll out with the release liner facing out, keep overlaps to the widths shown in the EPRO details, and heat weld seams before concrete placement. On slabs where a protection layer is specified, use the corresponding underslab assembly detail; in elevator pits follow the dedicated submittal detail.
Heat welding requires trained installers with appropriate PPE and fire precautions; verify local code and project specification requirements before installation.
Order EPRO PreTak heat weld HDPE membrane for watertight blindside and underslab waterproofing.
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