Gutter Expansion Joint Detail

Two downspouts per roof section.

Gutter expansion joint detail.

Click on picture for details. 7 30 am 4 00 pm central time. Do not caulk the cover plate. Thermal expansion is the tendency for a material to expand and contract when exposed to changes in temperature.

Permaspan roof to wall detail drawing dwg 1 06 mb permaspan roof to wall detail drawing dxf 243 6 kb. There are a couple of options when it comes to expansion joints in gutters. The expansion joint consists of a self adhesive rubber strip to cover a 1 gap joint between adjoining sections and an exterior cover plate. The traditional solution was to use the metal in short lengths increasing the need for outlets or incorporate expansion steps into the gutter.

Permaspan roof to wall expansion joint. Gutter ends are flanged then riveted and soldered into the gutter sections. 8 commercial box gutter expansion joint in kynar 500 steel use an expansion joint every 40 50 lineal feet. Expansion joints are a component in seamless rain gutter systems designed to protect the gutters from the effects of thermal expansion.

At the end of the forth 4th gutter and prior to its installation install a gutter expansion cover plate to center the joint. Expansion joints may also be required at changes in gutter width or depth at corners and at end conditions. The daily and seasonal thermal cycling causes metal gutter linings to expand and contract and if expansion joints are not provided this movement will cause the metal to crack and so the gutter to leak. Built in gutters poses greatest risk of water intrusion soldered or welded joints only stainless steel and copper recommended use high quality membrane underneath as a secondary underlayment specific shapes address water freezing attention to expansion allowances design min.

Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes. For 5 6 gutter. Gutter rubber expansion joints. Wind resistant offset gutter detail drawing dxf 137 17 kb wind resistant offset gutter detail drawing pdf 44 89 kb coping systems.

For the lap type gutter expansion joint a gutter end is recessed 2 1 2 minimum into the gutter on one gutter section and fitted flush on the other. In general long straight runs should have joints spaced a maximum of 48 feet apart. Gutters downspouts the greatest value in gutters and roof drainage with a unique design that improves performance while complementing your roof s aesthetic qualities metal era s line of water drainage products is the only system that s factory mutual approved. Allows proper thermal expansion of box gutter.