Ashburn, Virginia 20149, United States

Drainage Mat DC14

/ per unit


DC14 Drainage Mat was designed following rain screen principles to allow ample space for drainage and drying between exterior wall cladding and wall sheathing. With drainage channels on both sides, it permits easy drainage for water and allows air movement between the cladding and sheathing to help keep the wall dry. It is ideal behind exterior claddings that are closely attached to the wall sheathing, such as traditional stucco, stone, thin brick veneer, and siding. Because DC14 is made of extruded polystyrene (XPS), it does not absorb moisture and is not a food source for mold.

● Provides for drainage
● Allows air movement for drying
● Drainage channels on both sides
● Lightweight
● Easy to handle and cut
● Compatible with stucco, stone, fiber cement, wood and vinyl claddings
● Does not absorb moisture
● Virtually unrestricted drainage and drying

Product Data Property Test Method Value General Nominal Thickness (in) 1/4 Nominal Bundle Dimensions (ft) 4 x 48 fanfold Water Vapor Permeance (perm) ASTM E 96 (Desiccant Method) 1.1 Water Absorption, Max. (% by volume) ASTM C 272 0.2 Drainage Efficiency3 (% water drained) ASTM E 2273 93.0% Weight (lb/1000 ft2 ) 54 Recommended Service Temp., Max. (˚F) 165 Thermal Thermal Resistance, R–value1 ( o ASTM C 518 (@75o F Mean Temperature) 1.0 Fire & Smoke Flame Spread2 Smoke Developed2 ASTM E 84 / UL723 25 (Class A) 250

Typical Physical Properties
Property Test Method DC14 Drainage Mat
Thermal Resistance, R-value1

(°F.ft².hr / Btu per in thick)

ASTM C 518
(@75°F Mean Temperature)


(lbs./1,000 ft.²)

Water Vapor Permeance


ASTM E 96 (Procedure A) 1.1
Water Absorption

(Max % by Volume)

ASTM C 272 0.2
Fire Characteristics2

Flame Spread
Smoke Developed
2 These numerical flame spread and smoke ratings are not intended to reflect hazards presented by these materials under actual fire conditions (foam only). See UL Classification Certificate A184.
3 DC14 Drainage Mat was evaluated in accordance with the ICC-ES Acceptance Criteria for Foam Plastic Sheathing Panels Used as Water-Resistive Barriers (AC71). The product was installed over wood sheathing as an alternative to building paper or housewrap. All horizontal and vertical seams were sealed with GreenGuard ® Contractor Tape and the interface between the window frame and the DC14 was sealed using GreenGuard ® Self-Adhering Flashing. All other wall penetrations were sealed using either spray foam, caulk, adhesive tape or self-adhering flashing membrane. Refer to ICC-ES Evaluation Report No. ESR-2136 for details regarding the use of other GreenGuard Fanfold Underlayments as water-resistive barriers.
4 These dimensions apply to each fanfolded bundle

ASTM E 84/UL 723 25


Max, Recommended Use

Temp. (°F)

Water Resistance/Wall Assembly3

(2 hrs. @ 300 Pa/50 mph)

ASTM E 331 Pass
Dimensions / Packaging
Thickness (Nominal) 1/4”
Width4 (inches) 48”
Length4 (ft.) 48’
Bundles/Pallet 45
Square Feet/Bundle 192
Square Feet/Pallet 8,640

1 Specimens are aged and tested in accordance with FTC Rule (16 CFR, Part 460).

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