Another idea would be to put a small piece of of wood in the space of the block to shim out some structure to screw a pancake box into through the vinyl cover.
Junction box vinyl soffit.
It should be a snug fit.
Install proper bracing a simple 2x4 between the rafters should be fine and attach the electrical box to it.
One mounting ear on the box can easily be attached to the tail end of a rafter or truss but the other ear will probably not have any wood structure behind it.
Builders edge 6 6875 in x 6 6875 in almond vinyl universal mounting block.
Arlington dbvs1c 1 low profile in box recessed outlet box wall plate kit for new vinyl siding construction vertical 1 gang clear 4 7 out of 5 stars 252 22 48 22.
Vinyl or aluminum soffit usually just hangs between a channel on the wall and the fascia.
Kit includes mounting block with built in electrical box nm cable connector and learn more.
White polypropylene mini mounting block for siding model 146100001 10 68 10 68.
Siding mounting kits with built in box.
Using 8 sheet metal screws secure the junction box to the soffit.
If you have lap siding wood hardboard fiber cement or plywood sheathing mount the junction box to the house using exterior grade fasteners.
There should now be about 8 inches of neutral wire hanging down from the center of the junction box.
Many houses today have vinyl or aluminum soffit making it difficult to attach a junction box.
For smooth vertical mounting of light fixtures on all siding types.
For brick or stucco siding mount the box with masonry anchors.
Box 20 69 box free delivery with 45 order.
Simply drive galvanized deck screws through the mounting lugs.
Thu sep 21 2017 1 53 am if you mount the pancake box under the vinyl cover on the osb you run into the problem where it won t be flush with the vinyl block cover.
For vinyl soffits slide the neutral wire through the pvc conduit then slide the pvc just through the hole in the soffit.
If it s aluminium plastic soffit covers you ll have to remove the section where you re installing the receptacle.