Instructions / Assembly

accessory installation

CORNERS

Corner posts should be installed prior to siding panels.

INSIDE CORNERS

Two J-channels at right angles may be used for the inside corners

(FIG 9.1). Apply a bead of caulk where the two J-channels meet.

Install J-channels along the full height of the corner. The J-channels

should run from the soft area and extend down 1/2" past the bot-

tom of the starter strip. If an additional piece is needed to reach the

eave or gable trim, overlap the bottom piece with the top piece. Nail

the J-channels anges every 12". Flanges should be nailed securely,

but do not overdrive nails as this may cause distortion to occur in

the J-channel.

OUTSIDE CORNER POST

To close off the bottom of the outside corner post, create a cap by

cutting away the J-portion of the corner then bend the remaining

aps over so that they close the bottom of the corner. Top corners

may be capped using the same method.

OUTSIDE CORNER POST INSTALLATION

Ply Gem offers 1 and 2 Piece Outside Corner Posts. Follow the

installation methods below to correctly install them.

1 Piece Outside Corner Post:

Install the outside corner post as you did the inside corners. The

corner post should run from the soft area and extend down 1/2"

past the bottom of the starter strip. If a longer corner post is needed

to reach the desired height, overlap the bottom corner post with

the top corner post. Nail every 12" on both nail anges. To prevent

distortion, avoid driving nails too tight. Install corners squarely to

the wall to improve the nal look (FIG 9.2).

2 Piece Outside Corner Post:

Set the base piece onto the existing corner. Make sure to square

the corner base before attaching. The base should be attached so it

sits about 1/2” below the adjacent Starter Strips. Make sure to nail

no greater than 12” on center into the nail slots in the base on both

sides. If the height of the corner requires 2 corner posts, then make

sure to overlap the top base and cap over the lower pieces (overlap

both pieces by 1/2”). Do not drive nails too tight. Next install the

siding into both sides of the base making sure to leave a 1/8” gap

into the base.

After the siding is installed, attach one full side of the cap onto the

base and snap the other side of the cap onto the base. Make sure

that the Cap matches the location of the base.

FIG 9.1

FIG 9.2

steel siding installation