TPO Conventionally Insulated System (Alternate)
TPO Conventionally Insulated System (Alternate)
1 WORK INCLUDED
(1) Vapour Retardant: If required by design authority
(2) Insulation: Mechanically fastened where deck type permits, or fully adhered (as illustrated). Install according to RGC Guarantee Standard A4.3. See Section 2.2 for accepted materials
(3) Adhesive: Proprietary, installed according to manufacturer’s instructions, usually brushed, rolled or sprayed (3A: 2- part low rising insulation adhesive, specifically used to bond insulation and cover boards)
(4) Single Ply Membrane: Installed according to manufacturer’s instructions and RGC Guarantee Standards Section 2.1.1 and Section 2.1.3
(5) Membrane Lap: Thermoplastic membrane may be welded or chemically bonded (See Section 6.2). Thermoset membrane may be joined using uncured tape or proprietary adhesive (See Section 6.1)
(6) Edge Flashing: Proprietary, coated with membrane material and heat-welded to the primary (field) membrane
(7) Fascia Flashing Clip: Affixed to the fascia material (installed by others) with fasteners O.C. 300 mm (12”)
(8) Fascia Flashing: Manufactured to RGC Guarantee Standards for sheet metal flashings (See Section 2.1.1, A6.7 and A6.8)
(9) Membrane Flashing: Adhered according to manufacturer’s printed specifications using proprietary adhesive. Must be carried to the outside of the parapet or vertically to a minimum of 200 mm (8”) above the finished roof surface. Welded or adhered to primary membrane depending on membrane type.
2 RELATED WORK BY OTHERS
(A) Acceptable Deck
(B) Acceptable parapet surface: surface must be smooth, dry and clean. Rough surface must be covered with treated plywood, to be determined by the design authority or inspector, or as required by the manufacturer (see RGC Guarantee Standard A1.5.1). Illustration shows acceptable sloped wood blocking (See RGC Guarantee Standard A6.9.1)
(C) Edge Blocking
(D) Fascia Material
NOTE: Refer to RGC Guarantee Standards for additional requirements.