Craftsman CTS205 Half-Round Shingles, 110, IndicatorPanel Spacing at Different Temperatures marks

CertainTeed Vinyl Siding Installation Guide

Half-Round Shingles

Important

This product is not designed for roof application. It is designed solely for installation on vertical surfaces.

Panels must be installed with nails over a solid substrate with nail holding strength such as plywood, OSB, or existing wood siding (minimum 7⁄16" thick). This product cannot be installed with staples.

NOTE: Each panel must be nailed through the round hole in the center of the nail hem to control the direction of normal expansion and contraction. If you are installing a partial panel and the center nail hole has been cut off, drill a 3/16" hole in the upper center of the panel, and nail through it.

When cutting Cedar Impressions siding, use a 40-tip carbide blade mounted in the standard (not backwards) position. Using this technique will reduce burring; it does not gum up the saw; and the blade stays sharp longer.

panel temperature

indicatorPanel Spacing at Different Temperatures marks

	As with any plastic siding, Cedar Impressions expands and
	contracts with changes in temperature. For this reason, it is
	important that you space the panels according to the panel
	temperature at the time of installation. Failure to provide the
use these marks on installed panels	proper spacing according to these temperature ranges may
	result in gaps that are too large or too small, thereby creating
for quick alignment of second	the potential for side lock tabs disengaging, panel distortion,
course—use temperature indicators
	or buckling. Spacing of panels previously installed at a different
for final panel adjustments
	temperature does not require adjustment.

Each panel has indicator lines that serve as guides for proper spacing between the panels. The indicator lines are on the upper left-hand corner. Before you install Half-Round Shingles, make sure the panels are acclimated to the ambient temperature. As the ambient temperature changes during the day, it may be necessary to adjust the panel spacing to reflect the change in the panel temperature.

Space the panels according to the panel temperature at the time of installation.

Note: Many installers use small infrared thermometers to determine panel temperatures.

Panel Temperature	Temperature Indicator Lines
30° to 40°	Set to 30 line
41° to 55°	Set halfway between 30 and 65 lines
56° to 75°	Set to 65 line
76° to 90°	Set halfway between 65 and 100 lines
91° to 100°	Set to 100 line

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