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Spray Polyurethane Foam (SPF) Home

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Spray Polyurethane Foam Two-Component High Pressure
Spray Polyurethane Foam Two-Component Low Pressure
Spray Polyurethane Foam One-Component Foam (OCF)

Spray polyurethane foam (SPF) is an effective insulation and air sealant material; however, exposures to its key ingredient, isocyanates such as "MDI," and other SPF chemicals that may be found in vapors, aerosols, dust or on surfaces during and for a period of time after installation may cause adverse health effects such as asthma. Therefore, steps to control exposures and safety tips should be followed.

Information on these Web pages is aimed at helping to ensure the safety of SPF applicators and building occupants where SPF is installed. It is also aimed at providing safety and scientific information to professionals in business, non-governmental organizations, academic institutions, and regulatory agencies.

SPF Home

Quick Safety Tips for SPF Users

SPF Chemicals
  • Chemicals in SPF Products
  • Isocyanate Compounds Commonly Used in SPF and related products
Types of SPF Products Exposure Potential Health Concerns Steps to Control Exposure
Vacate and Safe Re-Entry Time
  • Building Occupants and Other Workers Should Vacate During SPF Installation
  • Determining Safe Re-Entry Times
Related EPA Activities Related Federal Activities Related International Activities

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The international conference, Isocyanates and Health: Past, Present and Future, which will take place in Bethesda, Maryland on April 3 - 4, 2013. Please visit the conference website.

EPA MDI Action Plan

In April 2011, EPA released an action plan to address potential health risks from methylene diphenyl diisocyanate (MDI) and related compounds , which are used in spray polyurethane foam (SPF).

Ventilation Guidance

Read EPA's draft Ventilation Guidance for Spray Polyurethane Foam Application for basic ventilation principles and strategies to help protect workers and building occupants.

Free Online Training Available!

Applicators and helpers:Receive free basic online training Exit EPA Disclaimer available on the American Chemistry Council’s Center for Polyurethanes Industry SPF Health and Safety website for preliminary information. Applicators should also receive classroom and hands-on instruction on the safe use of SPF offered by the Spray Polyurethane Foam Alliance Accreditation Program Exit EPA Disclaimer and SPF system houses.

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