Template:Part 10 (Waterproofing Roofs - SBS)
Template:Part 10 (Waterproofing Roofs - SBS)
Revision as of 16:58, 2 November 2020 by James Klassen (talk | contribs) (Replaced content with "====Picture-frame Approach==== <ol> <li>Before installing the base field membrane, “picture-frame” the field area adjacent to sensitive locations with self-adhering or...")
Picture-frame Approach
- Before installing the base field membrane, “picture-frame” the field area adjacent to sensitive locations with self-adhering or adhesive-applied membranes; apply membranes to a suitable substrate on the roof field, to a width of at least 1.5 m (58 ½”), beginning with a half-width sheet along the roof edge. See Figure 10.3.2-1.
- Perimeters must be flashed with self-adhering or adhesive-applied membrane base flashing. Base membrane flashing plies must extend
- no less than 100 mm (4”) onto the roof field.
- no less than 200 mm (8”) on walls or tall parapets, or to fully cover parapets up to 600 mm (24”) in height.
- Field base membrane must be installed and tied into the “picture frame” following the General Application standards for side and end laps (refer to 9.3.1 General).
- Standard application of cap field membranes must be carried no closer than 1 m (39”) of the wall or parapet. See Figure 10.3.2-2.
- Self-adhering or adhesive-applied cap membranes must be applied to complete the field. Side and end laps must be heat-sealed with a hot-air welder.
- Self-adhered or adhesive-applied cap membrane flashing must be applied to parapets or walls, in keeping with General Application standards for membrane flashing. Side and end laps must be heat-sealed with a hot-air welder.
- All other applicable Standards in this Manual apply.