EPDM Control Joint (Roof Divider)
EPDM Control Joint (Roof Divider)
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Division D - Construction Details
EPDM | Control Joint (Roof Divider) ( Article 10.3.2.3.; Article 10.3.4.1.)
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EPDM Details
1 WORK INCLUDED
- (1) Control Joint (Roof Divider)
- Typically framed with dimensional lumber and plywood on site by the Contractor, or by others (as specified). Insulated control joint shown in Drawing (A). See Article 10.1.6.2. concerning permissible design heights for control joints.
- (2) Roof membrane
- Carried up and over the top of the control joint as stated above. Single-ply membranes may be run up and over the control joint (secured at the base on either side with proprietary securement strips), or the control joint may be flashed (again, using the manufacturer’s securement strips).
- (2a) Roof Membrane Securement Strip
- Proprietary to a single-ply membrane manufacturer and installed to secure the field membrane at the base of a wall, parapet, expansion joint, or control joint. Not required for SBS-modified bituminous membrane systems.
- (3) Metal Cap Flashing
- Required only when the low control joint (less than 203.2 mm (8”) in height) is not fully enveloped with at least two plies of sheet membrane flashing. Cap flashing must be designed and installed as required in Part 13.
- Note that the cap flashing is sloped at least 2% (mono slope illustrated) when the width of the flashing exceeds 101.6 mm (4”) (Ref. Article 13.1.3.6., “Cap Flashing, Counter-flashing, and Reglet Flashing”).
2 RELATED WORK BY OTHERS
- (A) Acceptable deck
NOTE: See the Standard for additional requirements.
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