SBS Basic Curb

---

1 WORK INCLUDED

(1) Gypsum 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) Vapor Retarder

If required by design authority.

(3) Insulation

Mechanically fastened. (See Section 2.2 for accepted materials). (See Section 2.1.1 RGC Guarantee Standard A4.4).

(4) Overlay Board

Asphalt adhered or mechanically fastened. Two layers required over heat-sensitive insulation. (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 and to RGC Guarantee Standards. Torching directly to wood surfaces is not permitted.

(6) Base Sheet Flashing

Adhered according to manufacturer’s specifications, using cold adhesive, self-adhered, or torch applied to cover boards, or mechanically attached membrane. Torching directly to wood surfaces is not permitted. (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 to top of curb.

(9) Metal Flashing

As required by RGC standards. (See RGC Guarantee Standard A6.9 and A6.10)

2 RELATED WORK BY OTHERS

(A) Acceptable Deck

(B) Vapor Retarder

(C) Wood Blocking

Minimum 200 mm (8") in height. (See asphalt adhered or mechanically fastened. Two layers required over heat-sensitive insulation. (See RGC Guarantee Standard A5.6.2) Cant is optional.

NOTE: Refer to RGC Guarantee Standards for additional requirements.

---

Back to SBS Application

Back to SBS Construction Details

Back to Construction Details