Kingspan Insulation
Kingspan Group

XPS TYPE VI 40 PSI DRAINAGE BOARD

XPS TYPE VI 40 PSI DRAINAGE BOARD header

GreenGuard Drainage Channeled Insulation Board is a Type VI extruded polystryene foam insulation board designed for installation above waterproofing or roofing membranes in plaza decks and Protected Membrane Roofing Assemblies (PMR.) Sheets are 4 ft. x 8 ft. x 2 in. thick with 1 in. x 1 in. drainage channels along each 8 ft. long edge and a 2 in.wide x 1 in. deep drainage channel in the center.
Installing insulation above the roofing membrane minimizes the harmful effects of freeze-thaw cycles, harsh weathering and ultra-violet light to which the roof membrane would normally be exposed.

Typical Physical Properties 
Property Test Method
Product Type ASTM C 578 VI
Thermal Resistance, R-Value1
(ºF-ft²-h/Btu)
ASTM C 518 10
Thermal Conductivity, k-value
(k-value, Btu-in/hr-ft2 – 0F)
ASTM C 518 0.2
Compressive Strength1
(Min. psi @ 10% Deflection)
ASTM D 1621 40
Water Absorption
(Max.% by Volume)
ASTM C 272 0.1
Water Vapor Permeance
(Perms @ 75ºF, 50% R.H.)
ASTM E 96
Desiccant Method
<1.0
Fire Characteristics2
Flame Spread
Smoke Developed
ASTM E 84/UL 723 Class A
15
140
Density
(Min. lb/ft3)
ASTM C 303 1.8
Recommended Use Temperature
(Max. ºF)
165
DIMENSIONS / PACKAGING
Board Size 4' x 8'
Thickness 2"
Pieces Per Pallet 48
Sq. Ft. Per Pallet 1536

1 Specimens were aged and tested in accordance with FTC Rule (16 CFR, Part 460) and ASTM C 578.

2 These numerical flame spread and smoke ratings are not intended to reflect hazards presented by this material under actual fire conditions.