Sheet Metal Roof Expansion Joints

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Sheet metal roof expansion joints.

Sheet metal components enable low cost design variations in size to fit job conditions. 4 apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide. The expansion joint prevents condensation by insulating against internal building temperatures. Perma tite expansion joints are ideal for allowing thermal movement and condensation control between two roof systems.

Also the continuous cleat protects the perma tite expansion joint from wind driven rain. The science thermal expansion occurs when heat is added to most materials causing the material to expand. Roof to roof version. Anodize finish available upon request.

Uniquely addresses wall joint to roof joint interface uv stable tpv or pvc for broadest liquid and sheet membrane compatibility what s different. Standard sizes to fit expansion joint opening of 2 3 or 4. E coefficient of linear expansion of copper 0 0000098 per degree fahrenheit dt temperature change in degrees fahrenheit calculation of movement is rarely required in short roof pan construction since the details shown here can accommodate thermal movement of short pans. Technical paper architectural sheet metal manual.

Presents practical troubleshooting and corrective tips for typical problems of roof panels gutters downspouts fascia copings flashing ridges and hips valleys expansion joints penetrations fasteners and soldering. Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet. Flat seam roofs used in low no slope areas or areas subject to flooding or standing water typically made from 20 x 28 sheets relative geometry is important fro expansion and contraction sheet use efficiency and wind load. The waterproofing elements of roof expansion joints currently are looped membranes.

The loops either hang down into the joint in the case of metal cover systems or are humped up by means of. We were working with sheet lengths up to 29 3 metres so thermal expansion was an issue. Custom sizes upon request. Copper or stainless steel is recommended lock and seal all joints solder joints on slopes less than 3 12.

We do a lot of long length roofing and while fixing the sheets is a pretty quick process expansion joints can take time especially if you haven t got a good system to use. Exterior cap is available in 24 prefinished kynar 500 colors.