Differences of Foam Board Types
As a top foam board insulation distributor, IDI provides the most durable, versatile and high-performing products at prices that help keep you profitable. Contractors around the country count on us for foam board insulation and rigid foam board insulation that maintains high R-values, reduces thermal bridging and meets the strictest of codes.
When picking the right foam board insulation for your job, there are three main types:
- Extruded polystyrene (XPS): A closed-cell, rigid foam board insulation made through an extrusion process that helps prevent air and water penetration. This makes it a great insulation foam board that is also ideal for structural panels in wet environments. This is also highlighted by XPS’s low vapor permeance.
- Expanded polystyrene (EPS): Made from small beads of polystyrene that expand when heated to create a lightweight, closed-cell rigid board insulation. This type of foam board has similar properties to XPS, except that it has a lower R-value and higher vapor permeance.
- Polyiso board is a closed-cell rigid foam board, where the polyurethane foam is bonded to facers on both sides. Polyiso has some of the highest R-values among insulation materials and the variety of facers make this product ideal for roof, wall, ceiling and other specialty applications within residential and commercial buildings of all types.
Foam Board Supplies and Products
A project is only as good as your team, but the products you use will ensure it lasts. At IDI, we have more than 45 years of experience being at the top of the industry, providing you with the best brands available.
- Does not expand
- Can help with sustainability initiatives
