ProSTUD®
Drywall Framing System
#40 Two-Piece Expansion Joint
Two-piece expansion control joint
#40 Expansion Joint is a two-piece, slip joint that finishes butt ends of adjacent panels in wide or tall walls and ceilings to allow for multi-directional movement. Panels are attached to parallel studs through the expansion joint flanges, enabling the finished surface to expand or contract naturally without cracking. #40 is ideal for joining dissimilar wall types such as wood framing to CMU and at construction joints. Adjustable expansion opening or reveal is 1/4" to 5/8". Additional weather shields should be installed behind the joint to enhance the weather resistance of this system.
- Also available in zinc
Product Data & Ordering Information
| Size | Length | Pcs./Ctn. | Ft./Ctn. | Wt./Ctn. |
|---|---|---|---|---|
| 1/2" | 10' | 15 | 150' | 61 lbs. |
| 3/4" | 10' | 15 | 150' | 65 lbs. |
| 7/8" | 10' | 15 | 150' | 67 lbs. |
ASTM & Code Standards:
- Material: ASTM C847
- Installation: ASTM C841 (interior), C1063 (exterior) and EMLA-920.
- MSDS & Product Certification Information
Caution:
Suggestions for installation precautions when installing two-piece expansion joints and double casing beads used as double expansion joints: ASTM C1063 requires that double casing beads used as a movement joint “with a flexible barrier membrane behind the casing beads.” It is Clark-Dietrich’s opinion that all two-piece joints whether made from double casing beads or as a manufactured two-piece joint should be installed with the flexible peel and stick membrane behind the joint and it is further recommended that they be filled with backer rod and a highly elastic top quality sealant.