Crane Composites CLEANROOM WALL SYSTEM - Manual (Page 6)

Cutting Instructions
POSITION PANEL FACE DOWN ON A COVERED WORK AREA
When cutting with a circular saw, position the panel so that the saw blade enters the back side of
panel fi rst to avoid chipping or damage.
(Figure 3)
Radius Corners of Cut-Outs
CUT-OUTS
The inside corners of all cut-outs must have a radius of at least 1/8” (3.2 mm). Failure to radius
corners may result in stress cracking. For pilot holes, a 1/4” (6.36 mm) diameter router bit or drill bit
may be used, use a jig saw to complete the radius cut out. Allow 1/8” (3.2 mm) clearance around all
fi xtures, electric boxes, piping, etc.
Attaching to Wall
Generally, FRP panels can be installed using adhesive alone, fasteners alone, or a combination of adhesive and fasteners. The method
used should be determined by the room and wall conditions (see the wall conditions noted on pages 4 & 5). Check your local building
codes for any restrictions or guidelines regarding approved installation methods.
Before starting, determine which seam treatment is being used. Please refer to the appropriate instructions for the type of
seam treatment being used.
Moldings | Color Coordinating Caulk | Seam Sealant
Applying Adhesive
When adhesive is used, be sure that it is an FRP-formulated product. FRP adhesives are
widely available. Follow the adhesive manufacturer’s recommendations for trowel style (e.g.,
appropriate height of adhesive bead left by trowel). It is important to apply adhesive carefully
and follow all directions to prevent problems that may result from using too little or too much
adhesive. 100% adhesive coverage applied to the entire back of the panel is recommended by
using a “crosshatch” pattern. Adhesive should extend to all edge s of the panel and should be
applied directly to the back of each individual FRP panel.
(Figure 4)
Do not apply adhesive to wall.
Spacing
All FRP panels have expansion characteristics due to changes in humidity and temperature that must be accounted for during
installation with proper spacing around panel edges and around fi xtures attached to the panel/wall. Adequate space must be allowed
for panel expansion and contraction. For a 4’ x 8’ panel, a minimum gap of 1/4” is required at the top and bottom of each panel and
1/8” between panels. More room will be required for longer panels. It is recommended that panels do not exceed 48” in width and 12’ in
length to aid in ease of installation and ensure a satisfactory fi nished installation. See the FRP panel Expansion Joint
Chart for appropriate spacing at ceiling, fl oor and between panels.
When a moisture resistant installation is required, silicone sealant
should be applied in all moldings around all panel edges, fastener, and fi xtures.
Figure 4
Optional Shear
Back Side
Figure 3
6
EXPANSION JOINT CHART
PANEL SIZE 4′ x 8′ 4′ x 10′
Gap between panels and wall fi xtures 1/8′′ 1/4′′
EXPANSION JOINT CHART
PANEL SIZE 4′ x 8′ 4′ x 10′
Gap at ceiling 3/8" 3/8"
Gap at fl oor 3/8" 3/8"
Gap between panels at the inside corner 3/8" 3/8"
Gap between panels at the outside corner 3/8" 3/8"
Gap between panels at the center lines 1/8" 1/4"