Panelized Steel Framing Systems
RSF standard spec
How every RSF home is built
Every plan starts from the same specification, with products named, so you, your architect or your engineer know exactly what goes into the house. Plan pages note anything that differs, such as roof type.
Steel frame18-gauge USA steel, 50 ksi, galvanized
ICF foundationInsulated stem wall, not concrete block
2" continuous foamWraps the whole house outside the frame
Never vinylLP SmartSide or James Hardie lap siding
Structure
Standard
Upgrade
Foundation
Slab-on-grade with spread footing, Nudura ICF stem wall, 4" slab over 4" gravel, Stego Wrap 15-mil vapor barrier, Hercules rebar chairsICF replaces a concrete block stem wall: less labor, insulation built in.
Steel frame
RSF panelized cold-formed steel. 18-gauge, 50 ksi, USA-made, G60 galvanized.No rot, no termites, straight walls.
G90 galvanized
Exterior walls
3.5" steel studs
5.5" steel studs
Interior walls
3.5" steel studs
Floor & roof
Steel floor and roof trusses, 18-gauge, 50 ksi
Wall sheathing
OSB
MgO board
Envelope
Standard
Upgrade
Exterior insulation
2" continuous rigid foam, Insulfoam EPS (R-7.7)A continuous layer keeps cold from traveling through the steel.
2" Kingspan GreenGuard (R-10)
Wall insulation
Owens Corning R-11 metal-framing batts
Attic insulation
Batt or blown, meets local energy code
Siding
Lap siding: LP SmartSide or James Hardie. Never vinyl.
Roof
Shingle roofs: Owens Corning or GAFFlat roof (the Bova): membrane roofing
Windows
Double-pane Low-E
Exterior doors
Selected during feasibility
Systems
Standard
Upgrade
Heating & cooling
Furnace and AC, or heat pumpDuctless mini-split on the Bova and Durand
Water heater
Tank or tankless, selected during feasibility
Electrical
200-amp panel, EV-charger-ready, solar-ready
Specified products or equal. Final selections are confirmed in your build agreement. Interior finishes (cabinets, counters, flooring, fixtures) are chosen during the feasibility package.
See it on a planEvery plan is built to this spec.