Skip to content
Henry Blueskin PreSeal 435 Pre-Applied Foundation Waterproofing Membrane, Blue, 6.6 ft. x 65.6 ft. Roll
Regular price $3,360.00Henry Blueskin PreSeal 435 Pre-Applied Foundation Waterproofing Membrane, Blue, 6.6 ft. x 65.6 ft. Roll
Henry Blueskin PreSeal 435 is a pre-applied composite sheet membrane for commercial foundation waterproofing, installed before rebar and concrete placement. The blue 6.6 ft. x 65.6 ft. roll bonds mechanically and adhesively into wet concrete, forming a permanent barrier against water, water vapor and radon gas.
Key Features:
- Dual bond technology: Proprietary dual bond technology provides a full mechanical and adhesive bond to the concrete.
- Pre-applied system: Applied before rebar installation and concrete placement for a continuous barrier seal.
- Fewer seams: Wider roll width results in fewer seams, reducing the risk of water ingress.
- Tool-free laps: Self-adhering laps and splices need no tools or torches.
- Radon barrier: Acts as a barrier to water-vapor and radon gas permeation.
- Cold weather flexible: Better cold weather flexibility than polyethylene-based membranes.
- Chemical resistant: High chemical resistance for demanding below-grade environments.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Henry |
| Sell unit | 1 roll, 6.6 ft. x 65.6 ft. |
| Product line | Henry Blueskin PreSeal 435 |
| Available colors | Blue |
| Available sizes | 6.6 ft. x 65.6 ft. |
| Material | Polypropylene membrane laminated to chemically enhanced non-woven geotextile fleece with dimpled surface |
| Color / finish | Blue |
| Dimensions | 6.6 ft. x 65.6 ft. roll |
| Coverage per unit | One 6.6 ft. x 65.6 ft. roll (approx. 433 sq ft at full width, less laps) |
| Intended use | Pre-applied commercial foundation waterproofing below grade |
| Approvals | Meets City of LA requirements for below-grade shotcrete walls |
Coverage & How Much You Need:
One 6.6 ft. x 65.6 ft. roll covers approximately 433 sq ft of wall face at full width, before laps. Count vertical overlaps and perimeter details when calculating rolls, since the wide format is chosen to minimize seams.
Fit and Compatibility:
This is the pre-applied member of the Henry Blueskin waterproofing family, used ahead of rebar and shotcrete or poured concrete on foundation walls. It installs with self-adhering laps and splices; self-adhered Blueskin membranes and companion Henry detailing products are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One blue 6.6 ft. x 65.6 ft. roll of Blueskin PreSeal 435 composite sheet membrane.
Q: When is the membrane installed?
A: It is pre-applied to formwork before rebar installation and concrete placement, then bonds into the wet concrete.
Q: Does it need torches or tools to seam?
A: No. Laps and splices are self-adhering, so no tools or torches are required.
Q: Does it stop radon and vapor?
A: Yes, the manufacturer describes it as a barrier to water-vapor and radon gas permeation.
Q: What approvals does it have?
A: It meets City of LA requirements for below-grade shotcrete walls; no other approvals are stated in the sources.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
PreSeal 435 suits blind-side and shotcrete wall jobs where a post-applied membrane is not possible. Hang it with the fleece out so the concrete bonds mechanically, and detail the laps carefully before the pour since rework afterward is costly. Its wide roll width and cold-weather flexibility make it easier to keep seams tight on large commercial foundations.
Follow the manufacturer's installation data for formwork anchoring and lap sequencing, and inspect all seams before concrete placement since defects cannot be corrected after the pour.
Specify Henry Blueskin PreSeal 435 for permanent pre-applied foundation waterproofing on your next commercial pour.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
