Since typical membrane roofing does not include the insulation factor, as a customer you have more options to choose from to insulate your facility’s roof. There are a few types of insulation options the facility manager/owner can choose from:
- Polyisocyanurate (Polyiso)
- Extruded Polystyrene (XPS)
- Expanded Polystyrene (EPS)
TYPES OF ROOFING MEMBRANE INSULATION
Rigid Foam Installation
Extruded Polystyrene (XPS)
Usually defined by the blue, green or pink color, XPS falls in-between Polyiso and EPS in the range of price and performance. Extruded polystyrene consists of a blended polystyrene polymer heated and ran through an extrusion process. (Facilitiesnet.com)
XPS is semipermeable with a perm rating of 1. The average cost of extruded polystyrene insulation is $0.42/sq ft. for a 1 in thick panel. The average R-Value is R-5.
Expanded Polystyrene (EPS)
With the highest R-value per dollar, EPS is used for roof, wall and floor insulation. EPS can be used with for ground contact and does not retain water over time.
Expanded polystyrene consists of the polystyrene polymer impregnated with a foaming agent. The material expands when exposed to heat and is molded into a uniform, closed-cell insulating material. (Facilitiesnet.com) Commonly known as beadboard, EPS is also used to manufacture products like coffee cups.
Insulfoam: EPS Environmental Advantages
The average cost of expanded polystyrene insulation is $0.26 /sq ft. for a 1 in thick panel. The average R-Value is R- 3.6 to 4.2, depending on panel density.
Single-Ply Membrane Roofing Systems have been the go-to roofing for commercial, industrial, and manufacturing facilities for decades. Contact West Roofing to talk now or subscribe to learn more about commercial roofing systems.
Read More:
- Commercial Roofing Installation and Costs: SPF vs Single-Ply vs Metal Roofing
- Single-Ply Membrane Commercial Roofing: Installation and Performance
- Membrane Roof Blisters: Causes, Prevention and Repair
- Cost of Single-Ply Membrane Roofing
Article Here: Roof Insulation: EPS vs XPS [Infographic]
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