Installation Guide
17 18
A.
90° angled wall sections:
For the rst row, use a half HEDRON
®
horizontal
spacer. Remove the barbed tabs and apply 4 dabs
of sealant to the protruding posts on the bottom of
the half HEDRON
®
spacer as shown in the inset
drawing below. Attach it to the opening with sealant
side down and centered under the HEDRON
®
block
location. There should be a 1/2" gap between
straight sections of spacer and the shaped spacer.
For all other rows, use a whole HEDRON
®
horizontal spacer.
Next, apply 1/4" bead of
sealant onto the top of the
HEDRON
®
Horizontal
Spacer and place
HEDRON
®
Corner
Block on spacer.
B. The vertical spacers
for HEDRON
®
blocks
are at. See diagram
for proper placement
of vertical spacers.
These vertical
spacers should be
installed by putting a
1/4" bead of sealant on the side that will be
attached to a glass block.
Apply 1/4" beads of sealant
in the recessed grooves
around the raised impression
HEDRON
®
Horizontal Spacer
4A
HEDRON
®
Vertical Spacer
4B
Apply dabs of sealant
to the four raised
posts on bottom of
half HEDRON
®
spacer
Do not nish the joints until sealant has cured for
24 hours.
A. Remove any sealant squeezed out from the joints
with a utility knife.
B. Follow directions on the ProVantage
®
Surface Grout
container for grout application.
C. Grout is applied between glass blocks only, not
at perimeter.
D. For applications in wet
environments, wait
72 hours and apply sealer
to the grout lines with a
paint brush. Immediately
wipe sealer off glass
surfaces to prevent it from
adhering to the glass.
E. Apply a second coat of
sealer once the rst coat is dry.
F. After the grout has cured for 72 hours, caulk all
perimeter joints with a bead of sealant.
4D