Membrane Systems
One Chemistry, Specified Three Ways
The core DrySide membrane is a liquid-applied elastomeric applied by airless spray, roller, or trowel-grade for details. It is specified as: Foundation grade — positive-side below-grade walls, 40+ wet mils over detailed substrate, backfill-ready after cure with protection; Block system — filler pass on CMU followed by membrane coats, budgeting for face-shell absorption; Containment grade — immersion service after full 7-day cure, chemical compatibility confirmed per exposure from the data sheet. Details always precede field coats: cove, ties, joints, and penetrations carry the highest stress and get the first, heaviest material.
DrySide Membrane — Specification Data
| Property | Value |
|---|---|
| Type | Liquid-applied elastomeric waterproofing membrane |
| Elongation | 350% (ASTM D412) |
| Tensile strength | 2,400 psi |
| Adhesion to concrete | ≥ 400 psi (substrate failure typical) |
| Crack bridging | Hairline to 1/16 in. dynamic |
| Hydrostatic resistance | Rated for continuous below-grade head |
| Applied thickness | 40–60 wet mils, field |
| Coverage — smooth concrete | ~40 sq ft/gal at 40 wet mils |
| Coverage — CMU | ~30 sq ft/gal first pass (absorption) |
| Recoat window | 4–24 hours |
| Backfill / immersion ready | 48 hours with protection / 7-day full cure |
| Service exposure | Constant damp, soil chemistry, freeze-thaw; UV-stable at grade line |
Concrete Under Membrane
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