Steel SIPs Construction
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Steel SIPs ConstructionPosted by Chris M. Kavala at May 15. 2009
Currently under construction this 3 story balloon framed steel sip walls, roof and sun deck contractors website can be seen at www.southernsips.com and steel sips supplier www.SipSupplyInc.com or www.stores.steelsip.info
Re: Steel SIPs ConstructionPosted by mjfree at May 19. 2009
What are the advantages of steel sips over OSB sips? My house is framed in R-Control OSB sips.
Although any SIP construction will save 50 – 60% in energy costs, are 3 times stronger than frame, and are more environmentally friendly. Steel is a better choice for the following reasons
Advantages of Steel SIPs vs.OSB
v Steel will not warp, swell, twist, rot
v Rain during construction do not affect materials in any way
v No cranes needed for installation a steel SIPs are lighter than OSB
v The underside of the roof panel automatically forms an attractive finished soffit overhang or exterior porch ceiling.
v Joints are a T&G friction fit they do not require splines, mastic or fasteners greatly speeding installation time
v Steel is more stable during manufacturing and panels are held to 1/16” tolerance
v OSB is limited to 24ft. in length …Steel SIPs are available up to 53ft. in length, eliminating butt joints
v Steel panels are manufactured on a continuous line making them available in square pre-cut lengths in ¼ ” increments, but only charged to the nearest ½ ft., OSB often rounds up to the nearest 2 ft. increment – making you pay for waste that gets thrown away
v Higher ” R – Value” denser foam provides a 4.25 R- value per inch of foam
v No Termites … Impervious to termites and carpenter ants , foam core is borate treated
v No foam grooving is required for window and door openings, after cutouts are made, openings are simply “picture framed” with 18.ga. steel channels
v The steel skin is the “vapor barrier” on walls no additional covering is required before siding is applied
v Eave overhangs can be 4 feet with no additional support
v Sound Control – utilizing a 1-1/2” steel furring strip creates a dead air space for improved STC ratings.
v Wiring – utilizing that same air space, wiring is much easier than fishing wire thru OSB and any future retrofit wiring is easier.
v Will not support mold growth – painted galvalume steel skins are UDSA approved
v Indoor air quality is better due to the tighter and cleaner construction material of the interior
v Any steel building is safer from lightning strikes
v “Monocoque construction” All connections and attachments are with screws having greater pullout strength than nailing
v For economy or insulated utility buildings, steel SIPs have been left exposed as the finished siding and roofing.
v Zurich Ins. In partnership with the Steel Framing Alliance offer reduced builders risk insurance premiums
v In Florida and other hurricane prone regions Steel SIPs are 30% less to insure that block/truss and 53% less to insure than wood frame construction
Re: Steel SIPs ConstructionPosted by mjfree at May 21. 2009
Thanks for the run-down. You mention that you can have a 4' overhang on roof panels. What is the typical schedule for embedded beams on a 3:12 roof? I would consider using such a product on my next house construction - I did part of the install of the wall sips, and it went quite smoothly.
Re: Steel SIPs ConstructionPosted by Chris M. Kavala at May 21. 2009
There are no imbedded beams, sips are totally structural, are a friction fit, t & G joint, no splines, no fasteners
Re: Steel SIPs ConstructionPosted by mjfree at May 22. 2009
Im extremely surprised you wouldnt need support beams for the roof - what is the maximum distance you can span for roof panels?
Are there any panels that have a less textured T111 look to the outside? It seems that your previous post was implying that you dont need to add exterior siding to these panels?
see progress video for steel sips at www.myspace.com/steelsips