Craftsman CTS205 manual Soffit, Installation over open eaves, Installing receiving channels

CertainTeed Vinyl Siding Installation Guide

fascia	Fig. 1
cap
or coil
stock	open truss
	F-channel
	soffit
	16" to 24"

Fig. 2

open truss

F-channel

J-channel

soffit

16" to 24"

Soffit

You can use solid vinyl panels or perforated vinyl panels for soffit installations. Perforated panels provide ventilation, which helps to reduce heat buildup in the summer and ice dams in the winter. In buildings with roof ridge vents, you should install ventilated soffit. Check local building codes to determine the amount of ventilation required. In high windload areas, you should also check local building codes to determine if the application methods that are required differ from those described below.

The procedure used to install soffit depends on the construction of the eaves:

•Open eaves—eaves with exposed rafters or trusses—are typical of new construction. You will also have to use open eave installation procedures if you have to remove damaged soffit at a remodeling project.

•Enclosed eaves—eaves with soffit in place—are typical of remodeling projects.

Installation over open eaves

fascia cap

Fig. 3

The first step in installing soffit is to install the proper receiving channels. You have several options for receiving channels. You can use accessories such as F-channel or J-channel, or you can make channels using coil stock. The best approach is to select a method

or coil

stock open rafter

F-channel

soffit

16" to 24"

Fig. 4

add

nailing

strips add framing

soffit J-channel 16" to 24"

To determine the maximum permissible span, consult page 89 and local building codes.

that works most effectively with the construction techniques used to create the eave. Examine figures 1 to 4 and find the one that most closely resembles the construction methods used on your particular project.

If no F-channel is available, J-channel can be modified to create F-channel. Simply cut slots in the nail flange area where it would be nailed to the wall. After cutting the nail flange, bend the flange back and nail it to the wall. When installing Beaded T2" panels, use 3/8" H-bar or 3/8" J-channel.

Installing receiving channels

Install the receiving channels following the details shown in figures 1 to 4. Nail the channels every 16", positioning the nail in the center of the slot. Do not nail tightly.

If the eave span is greater than 16", you will have to install nailing strips (as shown in figure 4) and install the receiving channels on the nailing strips.

If the soffit will turn a corner, cut and install the channel so there is 1/4" for expansion at each of the adjoining walls.

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