Instructions / Assembly

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Pittsburgh Corning
Mortar Glass Block Installation System
Assembly Instructions
Introduction:
The Mortar I System utilizes Pittsburgh Corning perimeter
channels on all four sides. You will also use Universal
Mortar Spacers and glass block mortar to produce clean,
consistent 1/4" joints and a traditional grid look.
The Mortar II System does not use the Pittsburgh Corning
perimeter channels but instead utilizes expansion strips,
panel reinforcing and panel anchors. You will also use
Universal Mortar Spacers and glass block mortar to
produce clean, consistent 1/4" joints and a traditional
grid look.
Here is additional information about each method.
Mortar I: (page 3)
• This method is designed for use with Pittsburgh
Corning Premiere (4" thick) and Thinline
®
(3" thick)
Series Glass Block.
• The installation recommendations are for small
residential panels of 25 sq. ft. or less.
• Not for use in constructing curved glass block walls.
• Interior and exterior panels must be framed on all four
sides.
Note: This instruction is not to be used in constructing
curved glass block applications. All glass block panels
are non-load bearing, so adequate provisions must be
made for support of construction around the panel.
Mortar II: (page 14)
• This method is designed for use with Pittsburgh
Corning Premiere (4" thick) and Thinline
®
(3" thick)
Series Glass Block.
• The installation recommendations are for interior or
exterior residential panels larger than 25 sq. ft.
• This method may be used to install projects framed
on two, three, or four sides.
• Premiere Series - Panel size limitations - Interior (250
sq. ft. max) and *Exterior (144 sq. ft. max.).
• Thinline
®
Series - Panel size limitations - Interior (150
sq. ft. max.) and *Exterior (85 sq. ft. max.).
* Exterior panel size limitations are based on a 20 PSF.
For higher windloads consult local building codes or
call Pittsburgh Corning Corporation at 1-800-624-2120.
Note: All glass block panels are non-load bearing,
so adequate provisions must be made for support of
construction around the panel.
The joints of the Mortar I and Mortar II Systems utilize
a traditional installation method using a mortar nish for
the classic “grid” look. Glass block sealant should be
used to seal the perimeter on both sides of the panel.
Before you begin installing your glass blocks, decide
which installation method is right for your project.
The materials required for Mortar System glass block
installation are:
1. Pittsburgh Corning Premiere Series or
Thinline
®
Series Glass Block
2. Universal Mortar Spacers
3. Perimeter Channels - Premiere (4") or
Thinline
®
(3") (Mortar I System)
4. Expansion Strips
5. #6 x 1" zinc-plated at head screws (approx.
three per lineal foot of perimeter channel)
(Mortar I System)
6. Panel reinforcing (Mortar II System)
7. Panel anchors (Mortar II System)
8. #12 x 1" zinc-plated pan head screws
(Mortar II System)
9. Glass Block white premixed mortar
10. Pittsburgh Corning Glass Block Sealant
11. White touch up paint (Mortar I System)
12. Latex paint, Weldbond
®
adhesive, or asphalt
emulsion depending upon application.