![](/images/new-backgrounds/1060153/60153219x1.webp)
CertainTeed Vinyl Siding Installation Guide
Cedar Impressions
Bay Window Cornerposts
When installing Bay Window Cornerposts, be sure to run Cedar Impressions Metal Starter to both corners, and install Cedar Impressions panels from right to left.
Install the Cedar Impressions panels into both the inside and outside cornerposts. Leave a 2.5" gap on each side of the corner.
Once the panel has been fastened, hook the cornerposts over the siding, making sure they are locked into the starter strip.
Nail through the top two holes of the Cornerpost.
Continue installing the Cornerpost as you move up the wall. When you reach the top panel, cut the Cornerpost to length and nail it with a color matched finish nail.
If the Cornerposts are installed before the siding, you will have to cut the Cedar Impressions panel to fit. To do this, measure from the edge of the last installed panel to the edge of the Cornerpost. Add