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Important: Please read for Best Results

  1. Always leave a can on the gun.
    This will assure that no moisture will enter the system and clog up the gun.
  2. Shake the can well.
    Shaking the can will mix the propellant and resin for a better cell structure.
  3. The can temperature should be over 60 degrees farenheit.
    This will assure optimum performance and highest volume.  In cold temperature, warm the can before foaming.
  4. Mist the surface with water before foaming.
    Pur Fill is a moisture curing foam.  This water mist will assure complete cross-section curing.
  5. Tighten the set screw when you have finished foaming.
    This will eliminate accidental misfiring if the trigger gets bumped.
  6. Do not flush solvent cleaner through the gun.
    Solvent cleaner will break down the foam to resin and coat the inside of the gun.  The best maintenance is to ALWAYS LEAVE A CAN ON THE GUN

Please train everyone that uses the system.  If a can is left off of the gun for more than 45 minutes, there will be damage to the gun.


Frequently Asked Questions


Q. Do I need to use a gun cleaner?

A. We believe if you “ALWAYS LEAVE A CAN ON THE GUN AND PULL THE TRIGGER ON A REGULAR MONTHLY BASIS” there shouldn’t be the need to purchase gun cleaner.

Our foams are moisture curing polyurethane, so the foam needs moisture to cure. With the can mounted on our foam guns, this system is moisture free. By pulling the trigger and using the system monthly, this will keep fresh foam flowing through the system.

Mounted systems that sit unused for a long time, can result in separation or “Italian dressing affect”. The foam can separate in the barrel of the gun hampering the foam flow. With regular monthly use this “Italian dressing affect” won’t happen.

The common gun cleaner is acetone, commonly known for being finger nail polish remover. Acetone breaks down the propellant collapsing the polyurethane into a thicker polyurethane resin. The cleaner then pushes the resin through the gun. The use of cleaner is time consuming, expensive and can lead to the polyurethane to coat the inside of the dispensing gun.

Always have a can of foam on the gun; it doesn’t matter if the can is empty or full.


Q. What is the shelf life of Todol Foam products?

A. All aerosol products have a shelf life. Polyurethane foam products can range in shelf life from 9 months to two years.

Shelf life is dependent on the valve system that is being used. We use predominately the Pageris Valve. This is the highest quality valve on the market. It is made with only plastic and metal components, thereby eliminating any storage issues.

Most other foams use a rubber valve system. These rubber valves expand and contract while in storage due to temperature fluctuations which then can allow the propellant to escape the can and ruin the foam.

Our plastic and metal valve does not expand or contract with weather fluctuations. For the best storage, store our cans of foam in an upright position in a dry constantly moderate temperature.


Q. Are there tips for foaming around doors and windows?

A. One component moisture curing polyurethane gun dispensed foam is an excellent product to use around windows and doors to stop the passage of air.

Goal: To stop the passage of air and drafts. Purfill WF has excellent adhesion and adheres to most window materials.

We are air sealing, not insulating. With insulation more is better, but this is not true when air sealing around windows and doors. When foaming around windows and doors the goal is to match the thermal resistance factor (R-factor) of the window. Most windows have an R-factor of 2 to 3. Purfill WF has an R-factor of about 5 per inch. Therefore ¾ of an inch of foam should be sufficient to match the R-Factor of the window.

Place the foam as close to the exterior as possible. Then follow these simple instructions:

  1. Shake the can very well
  2. Assure the can temperature is between 60-80 degrees F.
  3. Practice laying down beads of foam. Play with the set screw on the foam gun and leave the setting when the desired bead size is dispensed.
  4. Assure the window is clean and dry to assure good adhesion
  5. Foam from top to bottom, placing the foam gun barrel into the void and foam down the window
  6. For small voids, use our foam reducer or plastic barrel with the green needle; dispense the foam slowly when using these adapters.
  7. When foaming is complete, let the foam properly cure, review the window and look for any void and use the foam to touch up where needed.


Q. Can you use Todol Foam in cold weather?

A. You can get excellent quality foam while foaming in cold weather if you follow these simple steps

  1. Shake the can well
  2. Assure the can of foam temperature is between 60 – 80 degrees Fahrenheit
  3. Mist water on the area to be foamed.

You need to make sure the can temperature is in the 60 – 80 degree range. Warm the can of foam before foaming in cold weather. Warm by keeping in your vehicle, by placing can in hot water etc. “Never” use fire or flame to warm a can of foam. Shake the can very well for 30 to 60 seconds.

With a misting bottle, mist the area with water on the area to be foamed, if you are foaming in large sections. Every two inches, stop, mist water on the foam and foam another 2 inches. In colder temperature, the humidity is dryer and there is less moisture in the air, hence the need to mist water to assure proper curing.

So really you are doing a foaming weather report, in cold temperatures.