Spray Foam Insulation

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Compare Open-Cell & Closed-Cell Spray Foam Insulations

Both closed-cell spray foam and open-cell spray foam insulation can be effectively used in commercial and Residential building designs to allow the building to achieve energy efficiency and consistent performance. When applied on the interior, open-cell spray foam provides performance advantages that differ to the advantages of closed-cell spray foam used on the exterior. Architectural firms can specify both types for the building envelope for a total performance option.
Closed-Cell Spray Foam / Exterior Applications
• Can be applied at very low temperatures (as low as 5oF)
• Adds wall racking strength as well as impact resistance
• Ideal for continuous insulation solutions
• Higher R-value* per inch - easier to accommodate high R-value* requirements in narrow spaces
• Lower vapor permeance (can be a Class II VDR)
• Can reject bulk water (ideal for flood zones)
• Higher tensile and bond strength
Open-Cell Spray Foam / Interior Applications
• Can be installed at a significantly lower cost and target the same specified R-value*
• Can achieve greater R-value* if not restricted by space
• Lower raw material/resource use
• Permits bi-directional drying
• Will accommodate long-term creep and seasonal movement
• Hydrophobic material
.  Compare Open-Cell & Closed-Cell Spray Foam Insulations
Spray polyurethane foam (SPF) is made by mixing and reacting chemicals to create a foam. The mixing and reacting materials react very quickly, expanding on contact to create foam that insulates, air seals and provides a moisture barrier. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints. There are different types of SPF. Here, we will discuss the types typically installed by professionals, which are either a high pressure foam and/or a low pressure foam.
Whether retro-fitting a home or choosing insulation when building a new one, homeowners are learning that spray polyurethane foam (SPF) insulation is a great way to save on energy costs and improve comfort. It is a spray-applied cellular plastic that forms a continuous barrier on walls, around corners and on all contoured surfaces. SPF insulation applied by professionals is generally described as a high pressure foam or a low pressure foam and is available as "open-cell" or "closed-cell" foam. There are several major differences between the two types, leading to advantages and disadvantages for both, depending on the desired application requirements. It is important to discuss with your contractor which type of SPF insulation may be best suited to your application. A side by side comparison highlights some of the typical differences between closed-cell and open-cell foam.
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