View source for SBS Control Joint (Roof Divider)

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<big><big>Division D - Construction Details</big></big>
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<big><big><big><big><big>SBS | Control Joint (Roof Divider) ([[SBS_Roof_Systems_Standard#10.3.2.3._General Application Requirements for Perimeters and Walls | Article 10.3.2.3.]]; [[SBS_Roof_Systems_Standard#10.3.4.1._Parapets | Article 10.3.4.1.]])</big></big></big></big></big>
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<div class="panel-heading"><big>'''SBS Details'''</big></div>
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Use arrows to scroll through related images (A, B, and C).  Click any image to expand.
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Image:Part 10 - SBS Control Joint (Roof Divider) - A.png | Drawing A
Image:Part 10 - SBS Control Joint (Roof Divider) - B.png | Drawing B
Image:Part 10 - SBS Control Joint (Roof Divider) - C.png | Drawing C
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=== WORK INCLUDED ===

;(1) [[SBS Roof Systems Standard#PART_10|'''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 [[SBS_Roof_Systems_Standard#10.1.6.2. Control Joints (Roof Dividers) |  Article 10.1.6.2.]] concerning permissible design heights for control joints.
;(2) [[SBS Roof Systems Standard#PART_10|'''Base sheet membrane flashing''']]:
:Fully envelope the control joint to ensure water-tightness on all sides.  The base membrane flashing also separates metal cap flashing (when specified) from any organic substrates (plywood, dimensional lumber).
;(3) [[SBS Roof Systems Standard#PART_10|'''Cap sheet membrane flashing''']]:
:Installed as required in Part 10 and applied as the second or third of a multi-ply membrane system, providing required coverage above the ''finished roof system surface'' (note that the required minimum coverage may be reduced when the joint is fully enveloped with two plies of membrane flashing (see illustration).

:When the height of the control joint exceeds 203.2 mm (8”) (Ref. Drawing (A)), no fewer than two plies of sheet membrane flashing shall be carried up at least 203.2 mm above the ''finished roof system surface''.

;(3) [[SBS Roof Systems Standard#PART_13|'''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 [[SBS_Roof_Systems_Standard#PART_13 | 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. [[SBS_Roof_Systems_Standard#13.1.3.6. Cap Flashing, Counter-flashing, and Reglet Flashing | Article 13.1.3.6., “Cap Flashing, Counter-flashing, and Reglet Flashing”]]).

:Fasteners used to secure metal flashing must be at least 88.9 mm (3-1/2”) above the finished roof system surface.

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=== RELATED WORK BY OTHERS ===
;(A) [[SBS Roof Systems Standard#PART_2|'''Acceptable deck''']]

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'''NOTE''': See the [[SBS Roof Systems Standard | '''Standard''']] for additional requirements.

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