Tpo Roof With Polyisocyanurate Insulation Is Plywood Required

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Tpo roof with polyisocyanurate insulation is plywood required. This industry issue update explains why the nrca recommends using a significantly lower r value for polyiso than pima does. Heat welded seams provide superior strength. Meets the requirements of astm c 1177. The jm tpo rhinoplate is a roof attachment system that uses heat induction technology.

Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system. Tpo roof insulation in the midwest is typically polyisocyanurate board insulation also referred to as polyiso or just iso. Insulation and tpo membranes. Benefits of energyguard polyiso roof insulation include.

Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Polystyrene eps insulation board per inch of thickness. By adhering cover boards over the insulation the screws and plates are insulated from temperature extremes seen by the membrane. Those metal screws short circuit the insulation potentially creating cold spots in the roof deck that attract condensation during winter months.

Taper roof insulation to drain sumps using tapered edge strips. The information listed in the chart below is for use with the referenced roof deck fastener type minimum pullout values and required penetration depths based on fasteners type. 3 7 6 cm round. These values are in reference to mechanically attached insulation cover boards under.

If insulation layer is 1 or less taper 12 from the drain bowl. Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price. Apa the engineered wood association. Plywood roof sheathing 15 32 inch thick approximate weight.

Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide. Install no more insulation than can be covered during the same working day. Polyisocyanurate insulation board per inch of thickness. Insulation thickness must meet the energy code which is verified during the building envelope comcheck.

If insulation thickness exceeds 1 taper 18 from the drain bowl. Tpo roof membrane 80 mil fully adhered membrane. New polyisocyanurate r values is a 2 page 2016 industry issue update from the national roofing contractors association nrca.