The waterproofing element of most other roof expansion joints is a looped membrane.
Roof movement joints.
Joint sizes range from 1 to 2.
Perpendicular and parallel to the joint in the horizontal roof plane and perpendicular to the roof in the vertical plane.
When properly designed and applied expansion joints will allow for movement in three destinations.
The eej cover is 60 mil thick reinforced epdm bellows widely used in roof to roof and roof to wall cant applications.
It is ideal for applications where exterior seals are used in walls and watertight transitions are critical.
Watertightness is achieved through positive integration with the roofing membrane and a purpose designed system for transitioning between the joint in the roof and joints in walls.
This aluminum roof cover is comprised of extruded aluminum components injection molded turn bar duroflex gaskets and a polyethylene vapor barrier.
The roof system movement at the gable ends of the roof plane can accomplished by one of two methods.
A roof expansion joint emseal roofjoint is a patented dual seal double flanged extruded thermoplastic rubber system for sealing expansion joints in roofs.
In general the top surface of the curbs should be sloped away from the joint to shed condensation and moisture onto the roof.
The curbs should extend at least 8 or 10 if a cant is used above the adjacent roof.