Providing solutions for your construction project.
By Ted Johnson, AWIP
As the construction industry becomes more cognizant about sustainability and green design, architects and structural engineers face daunting challenges: design a building that is energy-efficient, can offer savings and have less obstacles during construction, and yet over the life of the building continue to meet, if not exceed, environmental and energy standards.
That’s where insulated metal panels (IMPs) come in. These unique composites consist of closed-cell polyisocyanurate foam encased by two sheets of light gauge factory-coated steel. The combination of these components result in lightweight, high-strength building modules with exceptional thermal characteristics compared with antiquated field-assembled walls and roofs.
Significant Labor Savings
Recent studies show that these composite panels are also capable as structural components of building design. With proper attachment methods and design, insulated metal roof deck panels can provide diaphragm shear resistance similar to traditional wide rib (Type B) roof decks.
AWIP wall and roof panels slide together with tongue-and-groove joinery or with an over lapping edge. IMPs install quickly and easily and provide a complete weatherproof building envelope, offering the best value for insulation. At an approximate R-value of 8 per inch, an AWIP 4-inch wall or roof panel has an R value of 32, easily exceeding the new R value standard of 30 prescribed for roofs in most metro areas.
Traditional low-slope roof systems are assembled in three steps. The metal decking is first secured to the roof supports. The rigid board insulation is then layered, staggered and fastened atop the decking. Finally, a waterproof membrane is installed.
The costly, time-consuming second step of adding rigid board insulation is eliminated with our OneDek™ roof system. On a 100,000- square-foot roof, up to 20,000 fasteners and plates can be required to secure the insulation, which may take two crews of five up to two weeks to complete.
The RD1 insulated roof deck panels are mechanically attached to the roof supports using specific fastening systems to meet project requirements. Then, a white PVC or TPO waterproofing membrane is installed mechanically onto the 22 ga RD1 deck or adhered to the factory-primed surface.
OneDek: 2 Is Better Than 3
OneDek requires less than half of the fasteners, cutting hundreds of labor hours out of installation time as well as reducing equipment rental costs. The RD1 panel is at the center of the OneDek™ system. The RD1 has an exterior and interior steel liner which is vapor and water tight. Unlike traditional assemblies, there’s little fear of walking on our RDl deck, making for a safer, damage-free working platform.
In particular, the OneDek™ roof system for low-slope projects contains all IMP benefits:
- Less construction time
- Fewer components to install
- Safer work platform during installation
- Significant savings in labor and equipment costs
The OneDek roof system is the cost-competitive solution to meet performance needs of the design professional while also providing the installation community with an efficient, safe and durable commercial roofing system that will last multiple roof generations.