2 Tips For Installing Vinyl Siding On Dormers

Vinyl siding has become one of the most popular forms of siding because it is inexpensive, attractive and easy to install. If you are contemplating installing exterior vinyl siding on small window dormers on your home, here are a few tips.

Tip #1 – Allow for Expansion
Vinyl is a material that expands and contracts with changes in the weather temperature. In order to prevent the vinyl siding from being damaged, do not nail the material tightly to the building. Instead, allow a gap of approximately 1/32 inch between the siding and the wall. You do not need to measure each nail attachment, but instead periodically check to see if the panel easily slides between the wall and the siding.

Tip #2 – Use a Template to Cut the Siding Angle

Create a template to cut the siding pieces by first placing a piece of siding horizontally on the side of the dormer. Make sure this piece of siding is touching the roof where the dormer meets it and is level. Place another piece of siding against the angle of the roof where the roof meets the dormer, so that the two pieces of siding meet to overlap.

Take a pencil and draw a line on the horizontal piece of siding that is against the dormer side, following the line where the second piece of siding overlaps the first piece.

Remove the pieces of siding and use tin snips to cut along the line you just drew. This will be your template to cut additional pieces of siding.