FAQ's

See an R-Control SIP's side-by-side comparison.

Frequently asked questions about building with Structural Insulated Panels.

Here are a few of the most commonly asked questions about building with
SIP's. For questions not listed here, send your inquiries to:
SteveEtten@GrandCountySIPs.com  or go to the Contact Us page

Q:
What are structural insulated panels?
A: Structural Insulated Panels (SIPs) consist of a foam core of rigid
insulation laminated between two sheets of 7/16" Oriented Strand Board
(OSB) with an industrial adhesive to form one solid structural member. Other
lamination faces are available, both structural and non structural. These SIP
panel components serve as your exterior wall roof and/or floor systems to
give you loading and spanning capabilities not found in ordinary
construction. We can custom cut each panel to your desired house plan to
insure quality and speed of construction as well as an energy efficient home
that cannot be matched by fiberglass batt insulation/stick framing.

Q:
How do I run electrical in an enclosed panel?
A: We supply, upon your request and discretion, horizontal wire chases
located through the core of your panel at standard outlet and switch heights.
Vertical chases are not made on the edges of the panel, they are cored
within the panels. Wire channel cores will allow your electrician to snake
wires through these channels and loop from under the floor or in your roof
trusses.

Q:
Will using SIP panels limit my home design?
A: Not at all!  We manufacture all panels to your specifications and your
home design. Panels work in conjunction with roof trusses, floor systems
and any other building products used to build your home. One thing to keep
in mind: when ordering your windows and doors (exterior) to fit a 4½" thick
SIP wall, you will require a finished window jamb of 5-1/16" after drywall is
installed or to fit a 6½" thick SIP wall, you will require a finished window jamb
of 7-1/16" after drywall is installed. Please check with your preferred
window/door supplier to see if there is any additional cost.

Q:
What is the R-Value of these Panels?
A: A lamination of OSB/EPS/OSB:  SIP's have whole wall "R" values listed
in the table below at 40  F. "R" value is important to the home owner and
builder; as it's the thermal efficiency of SIP's that bring them even further
above standard construction. Thermal efficiency is also improved by the lack
of moisture penetration and air leakage through the panel that really means
the most to you in significant energy savings.  

Q:
How much does it cost to build a SIP house?
A: Because of the high quality, certified panels, SIP's will normally cost
between 1% and 3% more than an identical stick house.
Panel
Thickness
R-Value
@75 F
R-Value
@40 F
4-1/2"
14.9
16.0
6-1/2
22.6
24.3
8-1/4"
29.3
31.6
10-1/4"
37.0
39.9
12-1/4"
44.7
48.3
FAQ's