Cottage Hill Exteriors Storm Damage Specialists
Roofing Siding Soffit Fascia Gutters
1033 E St Charles Rd Lombard Il 60148
(630) 833-1200 Fax (630) 359-4877

Green Guard Siding Underlayment
The Q-Series products have an extruded polystyrene foam (XPS) core with high-impact polystyrene capsheets on both sides, which make it one of the most durable products currently available. These products are also perforated to allow potentially harmful moisture vapor to escape so that it does not become trapped in the wall.

Property Test Method Q250 Q350
Thermal Resistance, R-Value1
(oF-ft2-h/Btu) ASTM C 518
(@ 75oF Mean Temperature) 0.9 1.1
Water Vapor Transmission Rate
(perm) ASTM E 96
Desiccant Method 1.7 1.3
Water Absorption
(% by Volume) ASTM C 272 2.0 2.0
Fire Characteristics2
Flame Spread
Smoke Developed ASTM E 84/ UL 723
Q250 Q350
Width 48 in. 48 in.
Length 48 ft. 48 ft.
Square Feet / Pallet 9,000 9,000
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.

Maximize Your Energy Savings & Earn Energy Tax Credits
As the cost of energy continues to escalate and the environmental impact of energy production becomes an increasing concern, the pressure to conserve energy resources is at an all-time high. In an effort to help promote energy efficiency and conservation, energy tax credits are now available under The 2005 Energy Policy Act for both new construction and existing homes.

There has never been a better time to increase the energy efficiency of your home and earn tax credits.

Cottage Hill Exteriors uses the top names you trust for your home: Mastic premium vinyl siding, GAF High definition Architectural shingles, DuPont Tyvek vapor retarder, and Green Guard siding underlayment.
"Cottage Hill Exteriors" is a registered servicemark.