HomeMy WebLinkAboutInstallation Manual for SIPST
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Shingles:
Not all shingle manufacturers warrant shingles applied directly over an insulated deck
or SlPs. Depending on your choice of manufacture¡ an additional ventilated space may
be required for warranty qualification. An additional ventilated space is recommended and
is always more desirable. Venting may also increase the life of the shingle by lowering the
shingle's temperature.
Venting the Roof:
The preferred and recommended method of roofing installation is on an elevated,
ventilated surface (see Figure 28). Furring strips or strapping are screwed vertically over
a layer of felt to the exterior surface of the roof panel on 16 to 24 inch centers. A layer of
sheathing material is applied on the strapping as the nail base for the shingles. (For metal
roof applications, an additional layer of strapping, installed horizontally, can be used in
lieu of the sheathing.) This system requires both eave and ridge vents to vent the cavity
and prevent condensation and heat buildup. For eave, soffit and fascia details, see Figure
174 through 17C on Pages 35 and 36.
NOTE: This method may help reduce the chance of shingle lifting, ridging and definition
lines caused by frost and/or the presence of moisture.
Figure 28. Ventilated Roof System
ROOFING FELT
ROOF SHEATHING
(cur BACK FOR VENT)
2X FURRTNG (SCREWED TO PANEL)
MURUS SrP W|TH FELTAPPLTED)
CORROSION-RESISTANT
COMMON NAILS
RIDGE PURLIN
Siding and Exterior Finishes:
Virtually any type of siding may be applied to the exterior surface of a wall SlP. Some
common materials include a variety of vinyl siding, aluminum siding, cementitious, and
wood sidings to include clapboard, shiplap, board and batten, and shingles.
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NOTE: Allwood sidings are to be kiln dried. Green or air-dried sidings must be furred
away from the panel surface, with a layer of house wrap or felt paper ínstalled. Always
follow acceptable building practices and/or manufacturer's installation instructions.
_Sidings and trims are to be installed as a weatherproof covering to protect the SlPs from
moisture and/or water damage. Exterior finishes should always be installed in accordance
with the manufacturer's recommended installation'instructions and/or acceptable building
' practices. When installing exterior finishes, it is required to first apply a layer of house
wrap or felt paper over the SlPs to protect them from moísture and/or water damage. The
use of flashing and waterproof membranes are recommended in water leak-prone areas
for added protection.
NOTE: Slight inaccuracies in installation and improper sealing techniques, compounded
by weathering of the exterior finishes, will eventually result in water leaks. Once a leak
has developed, it generally does not become apparent until serious damage to the SlPs
has occurred. Therefore, it is strongly recommended that inspections be done at regular
intervals, and preventive maintenance be carried out on the exterior finishes to prevent
any such damage to the SlPs.
Masonry Finishes:
Masonry and fiber-reinforced stuccos can also be used if a ventilated air space is
provided. Ventilated air spaces allow these materials to breathe and expand and contract
separately from the panel surface. Follow accepted building practices and the finish material
manufacturer's recommendations for ventilation and proper installation.
Masonry materials such as brick veneer must not come in direct contact with the SlP.
A vented air space between the veneer and SlPs, and weep holes in the masonry must
be provided (see Figure 29, Page 56).
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Figure 29. Veneer Detail
MURUS SIP
HOUSE WRAP OR
FELT PAPER
BRICKVENEER
AIR SPACE
(MTNTMUM 1/2')
PROVIDE
WEEP HOLES
SPRAYFOAM
3" STAINLESS
STEEL SCREWS
SUBFLOOR
FLOOR JOISI
ANCHOR BOLT
CONSTRUCTION
ADHESIVE
2X INLET NAILER
2X PTSILLPLATE
INSECT SHIELD AND SILL SEAL
MASONRY FOUNDATION
lnterior Finish: Trim, Gabinets, Etc.:
lnterior and exterior trim details are similar for SIP and conventional construction. The
primary difference is that in SIP construction there is a continuous nailbase on all wall
and/or ceiling surfaces. This facilitates the attachment of cabinets, trim, picture frames
and other fixtures.
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