Standing Seam loose clips that allow panels to slide out from under Clips

Guest User
3/29/2010
We completed a barn with a 12/12 upper roof and 4/12 lower, both over SIPS panels - Standing seam roof. Over the past difficult winter (some 28 inches of snow) we arrived one morning to find that a 30 foot section of 28 ft long panels (still connected together) had slid out from beneath the clips used to install the roof. Rest of the lower roof intact. Clips were installed with drywall screws (2 per clip). Does this seem normal? Dave Knight 410-703-1961
Guest User
3/29/2010
the panels are usually anchored on one end or the other so the panels can expand and contract from the end that is anchored, also to keep the panels from working off of the building. I would recommend anchoring the rest of the panels before they come off and also galvanized pancake head screws should be used over sheetrock screws.
Guest User
3/30/2010
The panels were anchored with only a single screw in the middle of the tab at the end of the panel, I suppose that is what was to keep the panel in place. Seems there should have been a better attachment than that. What is typically done at the upper end for keeping the panel from sliding? Best Dave
David Trefzger
4/13/2010
Standing seam clips, when used in a snaplock style panel, are designed to allow thermal expansion and contraction of the roof panels. The panels should always be pinned either at the ridge or the eave, depending on the desired direction of thermal expansion. Also of note, drywall screws are not designed to hold down metal roof panel clips.
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