WARNOCK HERSEY LISTING
 
EXTERIOR CLADDING SYSTEMS & COMPONENTS

PRESWITT MANUFACTURING LTD.
Vancouver, BC CANADA


Standard EIFS
    1. Substrate - per code requirements and manufacturer's recommendations.
    2. Insulation Board - 3/4" to 3" thick, 1.0 p.c.f. expanded polystyrene board conforming to CAN/ULC-S701 Type 1 (flame spread rating 25 or less) and ASTM-C578, fastened as follows:
    a.
    The Ribbon and Dab Method - Trowel, a ribbon of adhesive cement 2" (55 mm) wide and 3/8 " (10 mm) thick around the perimeter of the 2' x 4' (610 mm x 1220 mm) board. Place dabs of adhesive 4" (100 mm) diameter, 3/8" (10 mm) thick at 8" (200 mm) center on the remainder of the board surface.
    b.
    The Notched Trowel Method - Apply the adhesive cement mix to the surface of the insulation board with a notched trowel. The beads shall be 3/8" (10 mm) thick.
    3. Reinforcing Mesh - Manufacturer's recommended glass fiber reinforcing mesh, self-extinguishing, 0.49 - 0.65 oz/ft2, edges overlapped 2-1/2" (62 mm) minimum, totally embedded in Preswitt Adhesive Coat**.
    4. Base/Adhesive Coat* - Preswitt Adhesive Coat** mix number PW21, minimum 1/12" (2 mm) final thickness.
    Applied as a coat to insulation boards prior to reinforcing mesh installation with further applications as required to totally embed the mesh and to achieve the minimum final thickness; applied with a steel trowel.

    5. Finish Coat* - Preswitt Finish Coat** minimum thickness as per manufacturer's recommendation for specific finish, applied with a steel trowel.

*Components bearing the Warnock Hersey Certification mark for use within the appropriate design.
**Manufacturer's Trademark
Testing Standards: CCMC MasterFormat 07240 & ICBO AC 24.

Rainscreen EIFS
    1. Substrate - per code requirements and manufacturer's recommendations.
    2. Insulation Board - 3/4" to 3" thick, 1.0 p.c.f. expanded polystyrene board manufactured with a 12.5 mm chamfer on the top inside edge and conforming to CAN/ULC-S701 Type 1 (flame spread rating 25 or less) and ASTM-C578, fastened with adhesive coat using a 3/8" thick and 100 mm vertical wide ribbon on 300 mm centers.
    3. Reinforcing Mesh - Manufacturer's recommended glass fiber reinforcing mesh, self-extinguishing, 0.49 - 0.65 oz/ft2, edges overlapped 2-1/2" (62 mm) minimum, totally embedded in Preswitt Adhesive Coat**.
    4. Base/Adhesive Coat* - Preswitt Adhesive Coat** mix number PW21, minimum 1/12" (2 mm) final thickness.
    Applied as a coat to insulation boards prior to reinforcing mesh installation with further applications as required to totally embed the mesh and to achieve the minimum final thickness; applied with a steel trowel.

    5. Vent Description/Placement - One vent minimum 1/2" x 1/2" per 50 sq.ft. of wall surface on horizontal expansion joint.
    6. Finish Coat* - Preswitt Finish Coat** minimum thickness as per manufacturer's recommendation for specific finish, applied with a steel trowel.

*Components bearing the Warnock Hersey Certification mark for use within the appropriate design.
**Manufacturer's Trademark
Testing Standards: CCMC MasterFormat 07240 & NRC Procedures.

Noncombustible EIFS
    1. Substrate - per code requirements and manufacturer's recommendations.
    2. Insulation Board - Shall be Preswitt Mineral Wool Board with a density of 8 lbs./ft2 conforming to CAN4-S114M & CAN/CGSB-51-10. Use a 3/8" notched trowel to apply the adhesive compound to the back of the insulation in a horizontal manner.
    3. Reinforcing Mesh - Manufacturer's recommended glass fiber reinforcing mesh, self-extinguishing, 0.49 - 0.65 oz/ft2, edges overlapped 2-1/2" (62 mm) minimum, totally embedded in Preswitt Adhesive Coat**.
    4. Adhesive Coat* - Preswitt Adhesive Coat** mix number PW21, minimum 1/12" (2 mm) final thickness.
    5. Base Coat* - Preswitt NC Basecoat**, applied as a coat to insulation boards prior to reinforcing mesh installation with further applications as required to totally embed the mesh and to achieve the minimum final thickness 1/12" (2 mm); applied with a steel trowel.
    6. Finish Coat* - Preswitt Finish Coat** minimum thickness as per manufacturer's recommendation for specific finish, applied with a steel trowel.

*Components bearing the Warnock Hersey Certification mark for use within the appropriate design.
**Manufacturer's Trademark
Testing Standards: CCMC MasterFormat 07240.

Noncombustible Rainscreen EIFS
    1. Substrate - per code requirements and manufacturer's recommendations.
    2. Insulation Board - Shall be Preswitt Mineral Wool Board with a density of 8 lbs./ft2 conforming to CAN4-S114M & CAN/CGSB-51-10. Use a 3/8" notched trowel to apply the adhesive compound to the back of the insulation in a horizontal manner. Apply the insulation in vertical strips aligning notches at back of insulation.
    3. Reinforcing Mesh - Manufacturer's recommended glass fiber reinforcing mesh, self-extinguishing, 0.49 - 0.65 oz/ft2, edges overlapped 2-1/2" (62 mm) minimum, totally embedded in Preswitt Adhesive Coat**.
    4. Adhesive Coat* - Preswitt Adhesive Coat** mix number PW21, minimum 1/12" (2 mm) final thickness.
    5. Base Coat* - Preswitt NC Basecoat**, applied as a coat to insulation boards prior to reinforcing mesh installation with further applications as required to totally embed the mesh and to achieve the minimum final thickness 1/12" (2 mm); applied with a steel trowel.
    6. Finish Coat* - Preswitt Finish Coat** minimum thickness as per manufacturer's recommendation for specific finish, applied with a steel trowel.

*Components bearing the Warnock Hersey Certification mark for use within the appropriate design.
**Manufacturer's Trademark
Testing Standards: CCMC MasterFormat 07240 & NRC Procedures.

Plant
Preswitt Manufacturing Ltd.

5721 Production Way
Langley, BC V3A 4N5 Canada


Evaluated to the following...
The listed systems have been evaluated to the noted performance requirements for use as an Exterior Cladding. Tests may include, wind, water and moisture resistance, accelerated aging, moisture permeability and resistance to abuse.