Patterson Whittaker manufactures a wide variety of architectural profiles for both interior and exterior building applications. PW products generally consist of a layer, or layers, of specialty surface top-coatings applied over reinforced, expanded polystyrene (EPS) cellular foam cores. PW products are used in both residential and commercial applications.
PW exterior-grade profiles can be safely applied to weatherproof and code-compliant wall systems such as stucco, brick, concrete, CMU block and other smooth and impermeable substrates. PW also offers materials suitable for attachment to most conventional interior wall and ceiling surfaces, as well as unique assembly and attachment systems that can provide significant installation cost savings over other common building detailing systems.
PW products are very stable, high quality, decorative glue-on materials that do not require penetration of the waterproof membrane for secure attachment and are not intended for use as component of the primary envelope system. PW’s lightweight composition also helps protect architects, contractors and installers from liability issues commonly associated with settling, structural loading or seismic episodes.
Patterson Whittaker architectural profiles are manufactured to strict quality standards.
PW shapes are RADCO Approved to Federal Manufactured Housing Construction and Safety Standards.
PRODUCT COMPOSITION
PW Acrylic/Cementitious Base Coat
Base-coated products generally consist of a co-polymer and cement mixture embedded in an open-weave, treated, fiberglass reinforcement mesh.
PW Finish Coatings
Surface coatings vary for each specific PW product offering.
Expanded Polystyrene (EPS) Foam
Unlike Styrofoam, a trademark Dow Chemical product, EPS products are molded cellular blocks, 100% recyclable, and free of ozone depleting CFC’s and HCFC’s.
EPS is a completely inert, non-toxic, recyclable material.
PERFORMANCE TESTING DATA
EPS conforming to CAN/CGSB-51 GP20M Type I, ASTM C578-87, ASTM C-050-85, UL 790, UL 723:
| Thermal Conductivity | ASTM C-177 | “K” Factor 0.26 maximum @ 40F |
| 0.28 maximum @ 75F | ||
| Average Density | ASTM D-1622 | 1.0 lb/ cu ft. average |
| Compressive Strength | ASTM D-1621 | 10psi @ 10% offset |
| Coefficient of Expansion | ASTM D- 696 | 3.5 x 10-5 in./in./F |
| Water Vapor Transmission | ASTM E- 96 | 1.6 perm- inch minimum |
| Oxygen Index | ASTM D- 2863 | 24.0 minimum |
National Standard of Canada Testing CAN/ULC S701-97:
| Thermal Resistance | C177 or C518 | Type I – 3.75 minimum |
| (R value @ 75F) | Type 2 – 4.04 minimum | |
| Compressive Strength | D 1621 | Type I – 10 minimum |
| Type 2 – 16 minimum | ||
| Flexural strength | C 203 | Type 1 – 25 psi minimum |
| Type 2 – 35 psi minimum | ||
| Water Absorption | D 2842 | Type I – 5.2 maximum |
| (% by volume) | Type 2 – 3.5 maximum | |
| Dimensional Stability | D 2126 | Type 1 – 1.5% maximum |
| (% linear change) | Type 2 – 1.5% maximum |
Please call Patterson Whittaker for further or updated information.