Instructions / Assembly

6. Finishing

Note: Allow the mortar to set up for about one hour before

proceeding.

Note: To prevent scratching of the glass DO NOT use

abrasive materials for this cleanup.

A. Twist off the spacer tabs on both

sides of the panel.

M. Screw the short leg of the anchor to the top of the

opening.

N. Continue this two block procedure across the ﬁ nal row.

After installing the ﬁ nal block, be sure to press back

into the joints any mortar that has been forced out.

O. Install the expansion strip across the head.

Note: Because the top course meets the expansion strip

at the head, no mortar is placed at the top edge of these

blocks.

EXPANSION STRIPS

B. With moderate pressure, run the striking tool over

all the joints. It is best to strike all the horizontal

joints ﬁ rst, then the vertical joints so that the

pattern is uniform. Fill any voids with mortar.

Note: Striking removes excess mortar and compacts

it to create a smooth, concave, moisture-proof seal.

C. After striking, use a damp sponge to remove the

excess mortar from the block face, rinsing the sponge

frequently. Do not be concerned about the dry ﬁ lm

that remains on the blocks, it will be cleaned off later.

Note: Allow the mortar to dry for about two to three hours

before proceeding.

D. Use a soft, dry cloth to remove the excess ﬁ lm. A

common household plastic scouring pad can also

be used.

E. Apply sealant around the perimeter of the panel on

both sides.

Note: Where curb was used, you’ll want to cover it with trim

molding. You may also use moldings at the jambs and head.

F. If your glass block panel will function as a shower

wall, after about a week, coat the mortar joints on

both sides of the panel with tile grout sealer for

mold and mildew protection.