Difference between revisions of "SBS Mechanical Equipment Curb"

Revision as of 20:16, 19 July 2016

1 WORK INCLUDED

(1) Gypsum Overlay Board: Required when insulation is too thin to span flutes of steel decking (See RGC Guarantee Standard A2.5) or when required as thermal barrier by design authority.
(2) Vapour Retarder: If required by design authority.
(3) Insulation: Mechanically fastened where possible. (See Section 2.2 for accepted materials and Guarantee Standard A4.4).
(4) Insulation Overlay: As required. See RGC Guarantee Standard C4.1
(5) Base Sheet: Adhered to overlay board using asphalt, cold adhesive, self-adhered, mechanical attachment or torch applied according to manufacturer’s specification. Torching directly to wood surfaces is not permitted.
(6) Base Sheet Flashing: Adhered according to manufacturer’s specifications, using cold adhesive, hot asphalt, self-adhered or torch applied to cover boards, or mechanically attached membrane. Must be tucked under metal flange and mechanically attached to nailing strip. (See RGC Guarantee Standards Section 2.1.1, A5.6, and Section 2.1.3, C8.5).
(7) Cap Sheet: Applied according to manufacturer’s printed instructions and to RGC Guarantee Standards.
(8) Cap Sheet Flashing: Applied according to manufacturer’s printed instructions and to RGC Guarantee Standards. Must be tucked under metal flange and mechanically attached to the nailing strip.
(9) Metal Base Flashing: Mechanically fasten, standing seam at corners. Full width base flashing optional on flexible membranes. Partial skirt flashing minimum 75 mm (3") required on mechanical curbs that require flashing under metal flange. (See Detail Section 8.3.5).

2 RELATED WORK BY OTHERS

(A) Acceptable Deck
(B) Air / Vapour Seal
(C) Mechanical Curb: Minimum 200 mm (8") and maximum 300 mm (12") above finished roof surface.
(D) Rigid Insulation

NOTE

Some mechanical curbs are designed to allow membrane flashing to be carried up onto metal flange. Install according to manufacturers’ instructions.
Refer to RGC Guarantee Standards for additional requirements

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@@ Line 30: / Line 30: @@
 :Minimum 200 mm (8") and maximum 300 mm (12") above finished roof surface.
 ;(D) Rigid Insulation
 ;NOTE:
 * Some mechanical curbs are designed to allow membrane flashing to be carried up onto metal flange. Install according to manufacturers&#8217; instructions.
 * Refer to <i>RGC Guarantee Standards</i> for additional requirements
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