Dow STYROFOAM User Manual
Installation, Materials checklist
Figure 1
Figure 3
Installation
1. There are two ways to cut
STYROFOAM Ag Board.
One way is to use a straight
edge and a utility knife or
handsaw. Or, use a knife to
score the STYROFOAM Ag
Board. Then break the board
over the edge of a table or
sawhorse.
2. Attach STYROFOAM Ag Board
perpendicular to framing,
spanning at least three fram-
ing members with insulation
board joints breaking over
framing or meeting the roof
edge. Penetrate separate
wood and metal framing 1"
with a corrosion-resistant
fastener and poly washer,
such as QUIK Cap. When
fastening to metal, Buildex
Multi-Diameter Insulation
Teks or equivalent (with
minimum 1-1/4" poly washers)
are advised.
United States
I N S T A L L A T I O N I N F O R M A T I O N
A G R I C U L T U R A L
For more than 50 years,
STYROFOAM* Ag Board extruded
polystyrene insulation has
helped agricultural building
owners control the building’s
indoor environment and protect
its contents, whether livestock,
crops or equipment. In addition
to its exceptional insulating
value, STYROFOAM Ag Board
resists moisture infiltration,
withstands high-pressure cleaning
and reduces the potential for
moisture condensation within
the wall.
The easy-to-install STYROFOAM
Ag Board uses shiplapped edges
to create a secure joint that
does not require taping, saving
considerable installation time.
Materials
Checklist
To install STYROFOAM Ag
Board, you will need:
• Utility knife or small handsaw
• Safety glasses
• Straight edge
• Measuring tape
• Pencil
• Fasteners and poly washers
(such as QUIK Cap Washer-
Plastic Round or Buildex
Multi-Diameter Insulation Teks)
• Polystyrene-compatible
polyurethane spray foam
sealant, such as GREAT STUFF
™
insulating foam sealant
• STYROFOAM All-Purpose
Tape (optional)
• Squeegee or soft paint roller
(optional)
* Trademark of The Dow Chemical Company
metal
buildings
foundations
slabs
walls
roofs
Installation Procedures for
STYROFOAM Ag Board Insulation
Figure 2
End-joint gaps that are greater
than 1/8" should be filled with
spray foam such as GREAT
STUFF Gaps & Cracks sealant
or equivalent to keep a contin-
uous air infiltration barrier
and to help ensure maximum
thermal efficiency across the
board joints. To increase the
moisture effectiveness of the
board joints, apply STYROFOAM
All-Purpose Tape over the
sprayed board joints.
4. For maximum protection
against moisture and air infil-
tration, seal the board end
joints with STYROFOAM All-
Purpose Tape. Use a squeegee
or soft paint roller to press the
tape firmly to the joint. Cut
tape with a knife or scissors.
Do not tear tape.
3. Lock the shiplapped edges
together.