Installation Instructions

CertainTeed Vinyl Siding Installation Guide

Corner Blocks

Corner block

Install 1/2" J-channel as a starter. Measure and cut the side

lineals to the exact size of the window or door opening.

Cut the top and bottom lineals 1/4" longer than the window.

Using vinyl snips, make two 1" long cuts in the pocket areas on

both sides of each lineal. These cuts allow the lineals to connect

with the corner block and help provide proper drainage.

NOTE: It may be helpful to hold off securing the lineals until

the corner block is in place.

Position the corner block by inserting the top lineal into the corner

block’s receiving area—making sure the lineal’s pocket is inside

that of the corner block.

Position the vertical (side) lineal into the corner block by inserting

the pocket of the corner cover into the pocket of the lineal.

This will ensure proper drainage.

Corner block with rosette

Locate the small dimple on the back side of the block’s face or

measure 2-5/16" as shown and mark.

Drill or punch a 3/32" to 1/8" diameter hole through the face of

the block—the hole must not be larger than 1/8".

NOTE: Check the back side of the block for this location—

marked by “+”.

Apply the rosette clip from the backside. If desired, a small amount

of caulk can be applied over the hole prior to applying the rosette.

1/8" per side

make 1" cuts

2-5/16"

rosette

center

(back

side)

rosette clip