Use GreenGuard PB4 Waterproofing Protection Board after applying the waterproofing membrane to exterior foundation walls to prevent damage when backfilling. GreenGuard PB4 Waterproofing Protection Board has high compressive strength and impact resistance to withstand the toughest load pressures and backfilling impact. Available as 1/4" thick, 4' x 50' fanfolded product, GreenGuard PB4 Waterproofing Protection Board is lightweight, easy to transport, and easy to install. Since it is Extruded Polystyrene (XPS) its dense, closed-cell construction provides superior resistance to moisture absorption and decomposition from long-term exposure to chemicals in the soil.
R-Value1 ASTM - C 518 @75F Mean Temperature (F-ft2-h/Btu)
1.0
Compressive Strength3 ASTM - D 1621 (psi@10% deflection)
16
Water Vapour Transmission Rate (g/m/24 hrs) ASTM - E 96, Proc. A
0.6
Water Absorption ASTM - C 272 (max. % by Volume)
0.6
Fire Characteristics2 ASTM - E 84 / UL 723 (Flame Spread/Smoke Developed) Maximum Recommended
25/250
Use Temperature
165F
Square Feet per Bundle
200
Weight per Bundle (lbs.)
16.0
Square Feet per Pallet
9000
Pallets per Truck
15
1. Specimens are aged and tested in accordance with the FTC "R-value Rule" (16 CFR, Part 460).
2. These numerical flame spread and smoke ratings are not intended to reflect hazards presented by this material under actual fire conditions.
Warning: Foam plastic insulation will ignite if exposed to fire of sufficient heat and intensity. Protect foam insulation from exposure to open flame or other ignition sources during shipment, storage and installation.
Storage and Handling: When stored outdoors, all material should be protected from exposure to direct sunlight using an opaque light-coloured tarp or the original packaging. Material that has been unwrapped should be carefully rewrapped.
Photo showing aluminium Z-section 20 X 10 X 20 which has been sealed and mechanically fixed 100mm below the top of the blockwork. Wrimco PB4 protection board was first spot torched to the membrane and held in place by the Z-section to provide a high quality, low maintenance finish. The applicator is standing on the 50mm double washed river sand used to protect the 1mm PP filter fabric laid over the 30mm PP drainage cell at the base of the planter.
After rendering down onto the Z-section, the top of the render was waterproofed with Duromastic ACS prior to painting to prevent water bypassing the membrane system and to stop unsightly efflorescence (calcium carbonate formed by water reacting with lime from the render).
