General Disclaimer
While every effort has been made to ensure that the information contained within these specifications is comprehensive and accurate, NorthWest Rubber will not accept any liability for omissions or errors, and disclaim any and all liability that may be claimed arising out of reliance upon the information presented in these specifications. The user acknowledges that any reliance upon these specifications is at their sole risk and discretion. NorthWest Rubber has no obligation to correct any error or omission in any portion of these specifications.

NorthWest Rubber makes no representations concerning suitability or fitness for use of these specifications and expressly disclaim any and all warranties, express or implied, including without limitation warranties of suitability for a particular purpose.

1 General

•  RELATED SECTIONS

Spec Note: List appropriate Sections for related work specific to project. Modify header/footer as applicable.

.1 Section 02780: Precast Concrete Pavers.

.2 Section 07510: Built-Up Bituminous Roofing.

.3 Section 07520: Cold-Applied Bituminous Roofing.

.4 Section 07530: Elastomeric Membrane Roofing.

.5 Section 07540: Thermoplastic Membrane Roofing.

.6 Section 07550: Modified Bituminous Roofing.

.7 Section 07760: Roof Pavers.

1.2 REFERENCES

.1 CSA A126.4, Rubber Floor Tile.

.2 ASTM C 501, Taber Abrasion.

.3 ASTM C 1028, Co-Efficient of Friction.

.4 ASTM D395, Rubber Property Compression Set Method B.

.5 ASTM D412, Rubber Properties in Tension.

.6 ASTM D 570, Moisture Absorption.

.7 ASTM D624, Test Method for Rubber Properties.

.8 ASTM D2240, Rubber Property Durometer Hardness.

1.3 Submittals

.1 Submit samples in accordance with Section [      ] - [      ].

.2 Submit duplicate sample pieces of paver risers.

.3 Submit Material Safety Data Sheets for installation adhesives.

•  DELIVERY STORAGE AND HANDLING

.1 Deliver materials undamaged with manufacturer's labels intact.

.2 Store paving riser materials in a protected area on site a minimum of 24 hours prior to installation.

.3 Store paving riser materials flat, blocked off floor.

.4 Prevent damage or contamination to paving riser materials from water, moisture, freezing, excessive heat, direct sunlight and construction dust or dirt.

.5 Protect paving riser materials from construction activities. Provide tarpaulins or plastic coverings blocked to allow ventilation and prevent contamination from dust or debris.

.6 Remove only in quantities required for same day use.

.7 Avoid prolonged exposure of light and heat sensitive materials to sunlight.

.8 Store combustible materials away from heat and open flame.

.9 Do not leave roofing material unsecured at the job site where they may be dislodged by wind.

1.5 PROJECT CONDITIONS

.1 Install paving risers when environmental conditions are within limits prescribed by the manufacturer.

.2 Ensure work by related trades is complete before beginning installation.

•  Products

2.1 MATERIALS

Spec Note: Select appropriate product(s) and/or options listed in brackets

.1 Rubber Paving Risers:

      .1 Wearing Surface: 100% recycled vulcanized rubber throughout.

.2 Size: Select one of the following.

      .1 Square: 152 mm x 152 mm x [9 mm] [12 mm].

      .2 Round: 102 mm diameter x 25 mm thickness.

.3 Colour: Black.

.4 Material Properties:

      .1 Shore Hardness: ASTM 2240, 60.

      .2 Compression Set: ASTM D395, 2.40%.

      .3 Taber Abrasion: ASTM C501, .356 gm loss.

      .4 Tensile Strength: ASTM D412, 414.5 psi.

      .5 Co-Efficient of Friction: ASTM C1028, 1.01 wet, 1.25 dry

      .6 Elongation at Break: ASTM D412, 193.4%.

      .7 Tear Resistance: ASTM D624, 156 lbs/in.

      .8 Moisture Absorption: ASTM D570, 0.13%.

.5 Acceptable product: Paving Risers as manufactured by North West Rubber 33850 Industrial Avenue Abbotsford, B.C. Canada V2S 7T9 Phone 1-800-663-8724 Fax 1-604-859-2009

E-mail sweets@northwestrubber.com

•  ACCESSORIES

Spec Note: Select appropriate adhesive recommended by roofing membrane manufacturer.

.1 Adhesive:

      .1 Synthetic EPDM or PVC roof adhesive.

.2 Cutback Asphalt Plastic Cement.

3 Execution

•  SITE VERIFICATION OF CONDITIONS

.1 Examine [roof] [deck] areas to be covered and report any deficiencies to the Contractor. Do not proceed with installation until substrates and conditions comply with manufacturer's requirements for installation.

.2 Ensure roofing substrate is clean and dry.

.3 Co-ordinate paving riser installation with indicated plans.

•  APPLICATION: PAVING RISERS

.1 Ensure roof membrane and flashing installation is complete before beginning installation of roof pavers and paving risers.

.2 Snap two perpendicular chalklines on the surface to receive the pavers and paving risers. Use the lines as a reference and to assure a square layout.

.3 Layout paving risers centred on roof paver grid in field and flush to edge of roof pavers at perimeter or to indicated detail.

.4 Shim paving risers level by adding additional thicknesses of paving risers where roof membrane slopes and roof pavers are to be level.

.5 Adhere paving risers to roof membrane with adhesive compatible to roof membrane and paving risers if specified.

3.3 PROTECTION

.1 Protect paving riser installation until final set of adhesive.

.2 Prohibit traffic on floor for 48 hours after installation.

End of Section