Steel structural insulated sandwich panels (SIPs)
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Steel SIPs,
or Steel Structural Insulated Panels, are structural framing panels, about
4" wide, made of densely packed expanded polystyrene, commonly referred to
as EPS, sandwiched between two exterior sheets of galvanized steel. These
panels provide structural framing, insulation, and exterior sheathing all in
one piece. The panels, in theory, are similar to OSB SIPs, which is more
well-known than the steel SIPs panels. OSB, or oriented strand board, is simply
replaced with steel sheets to create the steel SIPs.
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| Insulated steel sandwich panels |
Applications
Steel SIP
construction can be used for most residential applications. Steel SIPs are
recommended for commercial buildings like office complexes and less than two or
three story applications.
Advantages
Steel SIPs
are two to three times stronger than conventional stick-and-brick
constructions. This allows for more design flexibility and open floor plans.
The steel
SIP panels offer high R-values. Compared to a conventionally built-home, a steel
SIP wall system is at least 25 percent more efficient. This saves the homeowner
or occupant on heating and cooling costs
Steel SIPs
allow for an airtight envelope that will last over time. The steel, unlike
wood, will never settle, compress, warp, rot, twist, etc., meaning you don't
have to worry about creating gaps. Gaps mean air penetration which means higher
costs to heat and cool the home or building.
Since steel
SIPs won't settle or warp, you no longer have to deal with walls and ceilings
cracking. Also, walls will be level and square.
With no air
penetration, allergens and dust do not constantly come into the home or
building. Reducing allergens and dust in the interior of the home make for a
healthy atmosphere indoors, where we typically spend 80% of our time.
Steel SIPs
emit no volatile organic compounds (VOCs). They do not "off-gas"
potentially harmful chemicals (like formaldehyde) and carcinogens into the home
or building. OSB and stick lumber cannot offer such benefits.
With
cleaner air (especially with our air purifiers) and a well insulated structure
due to the steel panels, the home or building houses comfortable interior
conditions.
Steel SIPs
have received the highest seismic rating possible in the state of California.
They are also resistant to hurricane-strength winds. They are rated to
withstand wind loads up to 155 miles per hour.
Steel SIPs
are not vulnerable to termites. Compare this to OSB SIPs that, unless the wood
is treated, is food for pests. The steel panels also discourage the growth of
mold and mildew.
Steel SIPs
are constructed in the manufacturing plant. Since they are made in a controlled
environment, the quality is considerable higher.
Not only do
the steel panels keep outdoor air out, but it also keeps outdoor sounds out.
Steel SIPs offer superior sound acoustic insulation.
Steel is
recyclable and made from at least 28 percent recycled materials. Also, there is
very little construction waste. These factors make a steel home or building
have a smaller environmental footprint.
Steel SIPs
are fire resistant. In tests, the steel SIPs produced no smoke and did not
allow the fire to spread. Compare this to stick-built or OSB SIPs homes and
building that burn easily and actually add fuel to the fire.
Disadvantages
Steel SIPs
require an insulation break between the exterior of the panel and the exterior
shell of the home or building. This is unlike ICF, which has the form built in,
or OSB SIPs for example. Compared to its advantages, steel SIP systems probably
have the least amount of drawbacks of any framing methods.
Misconceptions
Some think
steel SIPs, and steel framing for that matter, are dangerous during lightening
storms. This is not only incorrect but really incorrect. Steel homes and
buildings are actually safer than conventionally-built structures because the
steel acts as a continuous ground.
What makes
it "green"?
High levels
of insulation and an extremely airtight envelope mean cooing and heating costs
are cut by 50-60 percent. This means less energy is drawn from coal plants
around the country, equating to less greenhouse gas emission.
The air in
the interior of the home, with our measures added, will be cleaner than the air
on the outside of the house, making a healthy, allergen-less home or building.
The steel
is made from at least 28 percent recycled steel. It is also recyclable.
The EPS
(interior of the panel) only uses a small amount of petroleum to produce. The
material saves more energy than is required to produce it.
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Steel structural insulated sandwich panels are very strong and long lasting panels. Thanks for sharing this information with us. keep sharing.
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