Intumescent Paint is used in many types of construction assemblies because it is cheaper than traditional building applications. There are Four Types of Construction That Use FlameOFF Products.
New construction has many uses for an Intumescent Coating.
FlameOFF products are constructed in such a way as to achieve a code-determined fire-resistance rating, thus forming part of a fire compartment is passive fire protection.
There are many unplanned mishaps in the construction industry and rebuild is usually not an option.
Adherence to fire safety codes is more difficult for historic properties than for new construction.
To allow for proper drying of the fire protective coating. Ventilation will speed up the drying time. If no ventilation is available, a small fan can be placed in the area to circulate the air flow.
Do not exceed a relative humidity of 95%. High humidity levels will increase drying time, affect adhesion and can cause blistering in the coating.
The fire coating can be brushed with a high-grade latex paint brush. It is recommended that the coating is brushed in smooth even strokes.
For a faster and smoother application it is recommended that applicators use an airless paint sprayer.
To ensure proper adhesion of the intumescent coating, the substrates need to be free from dirt, oil, grease, and any other substance that can affect the adhesion of the intumescent coating.
The intumescent coating must not be diluted. It is recommended that the coating be mixed with a paddle mixer for 1 to 3 minutes.
Do not exceed wet film thickness (WFT) of 0.045” (1.16mm) by spray application, or WFT of 0.020 (0.5mm) by brush application, per coat. WFT is dependent upon relative humidity and airflow.
Typical spray distance from substrate to end of spray gun is between 24” and 36”. This spray distance will ensure a smooth spray application of the intumescent coating.
The recommended drying time between coats is 8 hours. Applying coats prior to 8 hours can cause blistering of the intumescent coating. The surface must dry and harden so you are not able to press your finger nail into the coating and create an impression. If you can make an impression then the coating is not dry.
Spray Application Based of 40 (WFT)
A top coat is not required for conditioned interior space unless it is for a desired color. An unconditioned space is considered a high humidity area, freeze/thaw area such as an attic, crawl space, or parking deck. A top coat is recommended for unconditioned space. Contact FlameOFF Coatings, Inc. for a list of approved top coats. A indirect weather condition is considered a high humidity area, freeze/thaw area such as a attic, craw space, or parking deck.
The damaged area should be cleaned and dried. The intumescent fire coating can be applied directly to the damaged area with the proper mil thickness to repair the area.
Trying to determine paint coverage with an intumescent paint can be tricky. Intumescent paint coverage rates are based upon Dry Film Thickness (DFT).
DFT varies depending on the steel size, in case of structural steel, since each piece of steel can have a different W/D ratio. Please contact FlameOff representative to figure DFT and a coverage for your particular structural steel members.
Generally, the coverage can be calculated by dividing 1108 by DFT, or by dividing 1604 by Wet Film Thickness. For example, the coverage for 30 Mils DFT application would be 37 sq ft/gallon.
Call FlameOFF technical support for more information at (888) 851-1657.
Tip plugging is caused by solids in the paint that are too large to pass through the tip orifice. Diluting or thinning paint does not reduce the size of the solids. Here is a list of things you can try in order to avoid tip plugging.