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PB4 Waterproofing Protection Board

After the waterproofing membrane is applied to the foundation, protect it from damage during backfilling with PB4 Waterproofing Protection Board. This durable extruded polystyrene (XPS) board has the compressive strength and impact resistance to withstand even the toughest load pressures. Its dense, closed-cell construction and tough plastic capsheets resist both moisture absorption and decomposition from long-term exposure to chemicals in the soil.

Typical Physical Properties
PropertyTest MethodPB4
Thermal Resistance, R-Value1
(ºF-ft²-h/Btu)		ASTM C 518
(@ 75ºF Mean Temperature)		1.0
Thermal Conductivity
(Btu-in/hr-ft²-ºF)		ASTM C 518
(@ 75ºF Mean Temp., k)		0.25
Water Vapor Permeance
(perm)		ASTM E 96
(Procedure A)		0.6
Water Absorption
(Max.% by Volume)		ASTM C 2720.4
Compressive Strength
(psi @ 10% Deflection)		ASTM D 162116
Fire Characteristics2
Flame Spread
Smoke Developed		ASTM E 84/UL 723
25
250
Max Recommended
Use Temp. (ºF)		 165
Weight 
(lbs./1,000 sq.ft.)		 80


Dimensions / Packaging
Thickness (Nominal)1/4"
Bundle Dimensions4' x 50'
Square Feet/Bundle200
Bundles/Pallet45
Square Feet/Pallet9,000


1 Specimens were aged and tested in accordance with FTC 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 (foam only).  See UL Classification Certificate A184. 


Disclaimer

Commercial Applications

Commercial Products

The best tools for moisture-resistant and energy-efficient structures.

When your design requires insulation on the exterior of the walls, the foundation, or the slab, you’ll find a GreenGuard extruded polystyrene (XPS) insulation board to meet every need. When an air barrier is specified for protection from air and moisture, you are sure to find a GreenGuard building wrap that is a perfect fit for the application. Our commercial line also includes butyl flashing, waterproofing protection board, and roofing recovery board to meet your full range of project requirements. Plus GreenGuard is green beyond the color. Our XPS boards contain up to 30% post-industrial recycled materials. And our products contribute to your LEED qualification with points for Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Let GreenGuard provide the products you need to accomplish your design and construction goals.

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