profile=""> Under Concrete Slab | SUPERSEAL

High Flow Drainage Under Concrete Slab


SUPERSEAL High Flow Dimpled Membrane can be used on exterior concrete walls, under paving stones with landscape fabric, against soil with shotcrete applied, blind wall applications, and under slab applications.

High Flow Tunnel Drainage

  • High Flow 6’7″ x 65’6″ (431 sq. ft.) / 2m x 20m $538.75

Call or Email for Current Pricing

Toll Free: 1-800-571-1877



SUPERSEAL Dimpled Membrane is made from tough, long lasting durable plastic that keeps exterior moisture out. Installed in many types of commercial applications.


The SUPERSEAL membrane is designed with more compressive strength in a standard membrane as compared to other products. At 1860 dimples per square metre, the membrane can be used under commercial slabs and over compacted granular fills. SUPERSEAL is so tough it can be walked on to install the rebar without crushing the dimples. This provides a permanent drainage path for years to come.

Install SUPERSEAL High Flow Drainage Membrane with the dimples facing down.

Butt all seams together and caulk with a tar based mastic to hold joins in place.

Please note: Standard procedures for reinforcing and concrete are still necessary.

OPTIONAL: At the edge of the floor bend the membrane up the wall higher then slab level to allow airgap between the wall and slab (Can be trimmed later if desired).


Under Slab Spec Sheet

Dimpled Sheet
High Density Polyethylene (HDPE)
Compressive Strength
3,200 psf (150 kN/m² )
Drainage Capacity
6,000 l/h/m
Dimple Height
.79″ (20mm)
Membrane Thickness
40mil (1.0mm)

PRICING – High Flow Membranes

  • High Flow 6’7″ x 65’6″ (431 sq. ft.) / 2m x 20m $538.75


Standard Shipping: 3 – 7 Business Days

All shipping times are estimated and may not be 100% accurate. Shipping times may vary based on location and order size. Most orders are shipped within the next business day.

Buy Now

Rolls & Accessories:

For Higher Volume orders contact us directly at

Share your thoughts!

Let us know what you think...

What others are saying

There are no contributions yet.


Consumer Sign In

Get advanced notice on deals, as well as gain access to your previous orders and account information.

Benefits of a SuperSeal Account

  • Up to date notifications on discount offerings
  • Secure online ordering and account history
  • Trusted payment options like Visa, MasterCard, AMEX, and PayPal
  • Great discounts of orders for contractors
  • Fast, easy shipping

Continue as a Guest

Don't have an account? Sign Up

    Your Cart
    Your cart is emptyReturn to Shop