GRivera
Well-known member
Light Fixture Blocks for Pole Barn Metal Siding - One Solution
Like many on here I haven't had luck locating a fixture block that works with metal siding so had to fabricate my own. I bought an 8' 1x6" piece of PVC trim board (actual size 3/4 x 5.5") and cut it into 7" lengths to make 5 fixture mounts. Then I ripped pieces of the same board to pad out the blocks with a 45 degree contour to accommodate the large ridges on the metal siding. I glued the pad out pieces longways to the back of the pads with Loctite Power Grab Ultimate adhesive - works with PVC.
For install, I added a 2x4 vertical backer studs to the interior, between purlins. I then screwed the blocks onto the siding with self tapping 3" exterior screws. I drilled a 1" hole through the block, metal siding and the backer board; and then surface mounted a pancake electrical box to each PVC block. The flanges on the goose neck lights I bought cover the pancake box so there was no need to recess the box. However, if could be done if needed as each mounting block has the pad behind it. I will fill the small gap between the fixture blocks and the siding with white silicone caulk to avoid any moisture issues. The lights are't installed yet but I attached link for a visual.
I think they turned out pretty well considering the raw materials.
I realize this sounds a bit confusing but the pics may bridge the gap.The lights are not yet installed.
Like many on here I haven't had luck locating a fixture block that works with metal siding so had to fabricate my own. I bought an 8' 1x6" piece of PVC trim board (actual size 3/4 x 5.5") and cut it into 7" lengths to make 5 fixture mounts. Then I ripped pieces of the same board to pad out the blocks with a 45 degree contour to accommodate the large ridges on the metal siding. I glued the pad out pieces longways to the back of the pads with Loctite Power Grab Ultimate adhesive - works with PVC.
For install, I added a 2x4 vertical backer studs to the interior, between purlins. I then screwed the blocks onto the siding with self tapping 3" exterior screws. I drilled a 1" hole through the block, metal siding and the backer board; and then surface mounted a pancake electrical box to each PVC block. The flanges on the goose neck lights I bought cover the pancake box so there was no need to recess the box. However, if could be done if needed as each mounting block has the pad behind it. I will fill the small gap between the fixture blocks and the siding with white silicone caulk to avoid any moisture issues. The lights are't installed yet but I attached link for a visual.
I think they turned out pretty well considering the raw materials.
I realize this sounds a bit confusing but the pics may bridge the gap.The lights are not yet installed.
Attachments
Last edited:





