Tip of the Week: Trim a Window with a Foam Shim

When installing Fullback siding insulation with vinyl siding, you have to accommodate for the additional thickness of the foam. If you do not have access to the wider, recommended j-channel, you can use a standard j-channel with a foam shim underneath to accommodate the thickness of the insulation.

To install the foam shim, simply nail it up around your window, then place your j-channel overtop. When installing the siding, push the Fullback against the foam shim, and slide the siding into the pocket of the j-channel.

Sarah Carey :