Installation Instructions

CertainTeed Vinyl Siding Installation Guide

Crown Molding and Cap for

3/4" Pocket J-Channel

You will need:

• Crown molding

• Crown molding end caps

• 3/4" pocket J-channel header and surround

To use crown molding with 3/4" pocket J-channels, measure the

length of the completed J-channel surround and add 2-1/2" (the

crown molding overlaps the J-channels by 1-1/4" per side).

Insert the crown molding cap into the crown molding and trace the

tip shape. Trim as shown.

Insert 1/2 of the crown molding cap into each end of the crown

molding lineal. Secure the crown molding with a bead of caulk.

Miter or square cut the J-channel (mitered corner is shown).

Insert the 3/4" wide rain tab into the receiving channel of the

side J-channel.

Crown Molding with 3-1/2" Lineal Surround

In addition to J-channel, crown moldings can also be used

with lineals. The next two pages demonstrate how crown

molding can be used with various lineal conﬁgurations.

Above all, remember that before applying accessories and

siding, make certain the substrate is watertight. In order to be

properly protected from precipitation, the substrate may need

to be properly ﬂashed to shed water to the exterior. The siding

alone is not a watertight barrier.

cut crown molding

cap in half

2" rain tab

window

or door

frame

window

flashing

insert cap (see above

for instructions on

assembling the cap)

rain

tab