Installation Guide

C. Measure the opening

diagonally from corner to

corner in both directions, and

compare the dimensions to

check for squareness. These

dimensions should be equal to

within 1/8".

Note: If there are any problems with

the opening, make adjustments before

proceeding.

Mortar I System

The tools required for the Mortar I glass block

installation system are a margin trowel, mortar pan,

polyfoam brush, sponge, tin snips, screwdriver or power

drill, ne tooth saw or miter saw, caulking gun, utility

knife, metal le, tape measure, 3/8

to 1/2" striking tool

and 2' level.

sure the opening is level

and plumb.

1. Prepare The Rough Opening

A. Make sure the opening

is the correct size. To

determine the correct

size of the rough opening,

add 1/4" to the sum of the

nominal block sizes for

both the height and width.

Example: Panel (using

8" x 8" block) is four block

wide (8 x 4 + 1/4" = 32-1/4")

and ve block high (8 x 5

+ 1/4" = 40-1/4"). Rough

opening needs to be 32-1/4"

wide and 40-1/4" high.

B. Use a level to make