Low-Pressure Spray Polyurethane Foam Health & Safety Training

by katie on Tuesday January 8th '13, 2:30 pm

A great new SPF on-line training tool has been launched by the Center for the Polyurethanes Industry (CPI).  It is available in both English and Spanish.  You can access this training from (see Low-Pressure SPF Chemical Health and Safety Training).  

The training is free of charge and those who successfully pass a test on the training material receive a "Recognition of Completion" form and wallet-sized card which is valid for two years.  The training addresses important issues such as safe handling and disposal of low-pressure SPF, engineering controls, personal protective equipment, working in confined spaces, and avoiding temperature stress.

Anyone using SPF products should take this training.
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Cold Weather Tips for Spray Foam Kits

by katie on Tuesday November 6th '12, 11:21 am

It's that time of year when cooler temperatures can affect the performance of your spray foam kit.  Spray foam is not exactly cheap, so you want to make sure you properly care for your kit and get the best yield and use out of it.  Always check with the spray foam manufacturer for optimal material storage and use temperatures for the system you are using. Protect material from freezing which can happen during shipping, storage, or in the field.

If you are using a portable polyurethane spray foam kit, such as a Versi-Foam System, in cold temperatures and the foam is dark in color and has a crunchy surface the kit is operating off-ratio.  You should always be running on a one to one ratio with two chemical streams of equal velocity. In cold temperatures, you will see more "A" chemical (darker chemical) dispensing than "B" chemical.

For peak performance of your spray foam kit in cold weather, here are a few helpful reminders:

Never store Versi-Foam or other portable spray foam kits in temperatures less than 40 degrees Fahrenheit. Storing at these temperatures would cause the chemicals to freeze.  The "A" component would freeze and crystallize, creating blockages in the dispenser. If this does occur, it cannot be fixed.

Before use always warm the chemicals to a temperature between 65-90 degrees Fahrenheit.  Check the temperature sensing strip on the tanks to be sure it is well into the green zone. It is also important during application, to continue to monitor the temperature of your chemicals.  If it begins to move toward the blue zone, warm the chemicals again. If you've warmed the chemicals artificially, be sure to shake them well before using to make sure that the temperature is uniform throughout the tanks. Cold chemicals will result in a foam that is "A" rich which will be darker in color and have a crunchy surface.

For best yield, it is recommended that the surface temperature onto which the foam is being applied to be within 65-90 degrees Fahrenheit. Colder surface temperatures will result in a lesser yield and possible adhesion problems.
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Watch your Temperatures - the Heat is On!

by katie on Tuesday July 3rd '12, 9:45 am

Temperature is important in producing good quality foam. This time of year it's critical to monitor chemical and surface temperatures before spraying foam.  Too many times we learn spray foam kits have been left in hot cars or left in hot storage units on job-sites.  If your chemicals are too hot you will not produce good foam and in extreme cases you will have adhesion problems.

For best performance, your chemical and surface temperatures must be between 65-90 degrees Fahrenheit. To help gauge the temperatures you will find a temperature strip on the B-Component (white) tank. When the green section is indicated the chemicals are at the proper temperature for use. If the red section or the strip is just about in the red section, the chemicals are too warm.  

Chemical temperatures that are too warm will create additional pressure on the "B" side, causing it to dispense with more pressure than it should. The foam dispensed will be lighter in color and spongy to the touch. In extreme cases where the foam is liquefied, melted, or foamed up, the kit is probably only dispensing the "B" chemical due to a blockage in the "A" side.  

When the chemicals are too warm, place the tanks in a cooler area until the temperature strip indicates the green section.  Always monitor the temperature strip throughout application to make sure they stay in the proper temperature range.

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Discontinued Products

by katie on Thursday April 19th '12, 1:40 pm

RHH Foam Systems will be discontinuing the following products:

Versi-Foam System 28: 1lb/cubic foot density, 300 board foot yield
Versi-Foam System 88: 1lb/cubic foot density, 1000 board foot yield

The final available date for these products will be May 18, 2012.

These products are being replaced with our new Versi-Foam Open Cell Systems 31 and 100, which are similarly low density (0.75lb/cubic foot), portable, and disposable low-pressure spray foam kits.  They include two chemical components (Component A: isocyanate and Component B: polyol blend), patented U-Control dispensing gun, ten multi-purpose mixing nozzles, and nitrile gloves. They are pre-pressurized and require no external power source.  The Versi-Foam Systems 31 and 100 contain a flame retarded formula, meeting requirements of ASTM E-84 as a Class I product.

The appeal of low density open cell products is their higher expansion rate, making it more cost effective than closed cell foams.  The Systems 31 and 100 offer a cost effective means to insulate, control air movement and reduce sound transmission between rooms within the building.  They are also well suited for exterior wall applications in which one inch of closed cell foam is applied to the exterior sheathing and then filled with open cell foam.  
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Working Safely with Spray Foam

by katie on Tuesday January 31st '12, 1:57 pm

The Center for the Polyurethanes Industry (CPI) has released a new video that teaches good safety practices for low-pressure, two component spray polyurethane foam (SPF) application.  The video is a free resource and a great tool for spray foam applicators.  The video covers the personal protective equipment (PPE), the chemicals used to make up spray foam, appropriate places to use spray foam, job-site preparation, clean up, and safety practices.

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