Product Data, W. R. MEADOWS
07 10 00

DATA SHEET 7015-081

  

Specification Canadian Spec.

ROOF PROTECTION BOARD

DESCRIPTION
ROOF PROTECTION BOARD (RPB) is a multi-ply, semi-rigid asphaltic panel composed of a mineral-fortified asphaltic core formed between two asphalt-saturated fibreglass liners and a plastic separator sheet. 

RPB is designed to be used as a base material in flat or low-slope roofing.  It may be installed over wood, concrete, rigid insulation or as a recover sheet over an existing roof surface which is to be re-roofed. 

USE
As a separator board, a roof recovery board, a levelling board in re-roofing applications, and/or as protection of a roof system under concrete pavers and modified bitumen applications.

FEATURES
  • Dimensionally stable, water resistant, tough, durable panels.
  • Acts as both base sheet and levelling board over built-up roofs.
  • Modified bitumen roofing systems can be torched directly to the board surface.
  • Limited number of sheets per pallet to accommodate easier handling on Roof Decks:
  • RPB-1            100 sheets @ 680.4 kg (1500 lbs.) per pallet
  • RPB-2            75 sheets @ 782.5 kg (1725 lbs.) per pallet
  • RPB-3            50 sheets @ 703.1 kg (1550 lbs.) per pallet

STANDARDS
Meets requirements of modified bitumen manufacturers as a base.

PHYSICAL PROPERTIES
  RPB-1 RPB-2 RPB-3
Thickness

2.6 to 3.2 mm
(0.105 - 0.125”)
(nominally 1/8”)

4.1 to 4.8 mm
(0.160 – 0.188”)
(nominally 3/16”)

5.6 to 6.4 mm
(0.220 – 0.250”)
(nominally ¼”)
Sheet Size

1219.5 mm x 1.5 m
(48” x 60”)
Weight per Sheet

± 6.58 kg
(14.5 lbs.)

± 10.12 kg
(22.3 lbs.)

± 13.57 kg
(29.7 lbs.)
Water Absorption <10% <10% <10%
Asphalt % by weight 72% 72% 72%
Note:  Other sizes and thicknesses available on request

APPLICATION
Surface Preparation
The surface to be covered with ROOF PROTECTION BOARDS must be dry and free of all debris. All blisters, ridges and other surface irregularities must be repaired so that the surface is smooth. Remove loose gravel from existing roofs.

As the sheets are taken from the pallet, remove the polyethylene separator sheet.

Butt panels together and mechanically attach with approved mechanical fasteners spaced every 61 cm (24") in all directions - panel corners, edges and mid-panel.

Cut sheets with a roofer’s knife for fitting as required.

Elastomeric roofing membranes, modified bitumen membranes or built-up roofing may be heat welded or hot-mopped directly to the RPB. The asphalt board then becomes an integral part of the roof membrane making it stronger and more puncture resistant.

When using mechanical fasteners to anchor the RPB, appropriate precautions must be taken to ensure that water cannot infiltrate the roof assembly, around the fasteners, prior to the roof membrane being installed.

PRECAUTIONS
Use only rubber tired construction equipment. Cover RPB promptly after installation. Do not leave exposed. Do not place on wet membranes or adhesives until solvent s have completely evaporated. Boards should remain stacked on the pallets on which they are shipped or on a smooth surface to prevent deformation before being applied. DO NOT STACK PALLETS IN STORAGE. Not to be used in applications where contact with a coal-tar based waterproofing system is possible. Read and follow application information, precautions and Material Safety Data Sheet. 

SPECIFICATION CLAUSE
Section 07 10 00

2008-06-06

warranty