Frequently Asked Questions

It can be used on almost any construction material used today: concrete, brick, plastered wall, tar, wood, plasterboard, trapezoidal sheet, flat and corrugated slate. Porous surfaces and insulation of plastics are undertaken after separate consultation.

It is important to know that the prices we give include not only the cost of materials, but also the execution. An important advantage is that with our technology you don't have to dismantle it in most cases. Overall, it can be said that the price of the foam is competitive if you calculate the costs associated with the installation of other materials (transportation, demolition, removal, fixing, longer construction time, cleaning).

Purfoam has been used around the world for 60 years. A misconception about polyurethane is that it can negatively affect air quality or even cause poisoning. There is no scientific basis for this. Closed-cell foam does not emit harmful substances, so it does not affect the health of the people living in the building. Polyurethane is the most effective insulation available today, it is resistant to mold, moisture and other harmful substances.

Closed-cell foam replaces twice the thickness of cotton or Styrofoam insulation—roughly twice as effective. Closed cell foam: 0.021 W/mK, cotton 0.044 W/mK, EPS 0.048 W/mK. 

With the technology, we can realize a thickness between 3-20 cm. If waterproofing is the goal, the minimum of 3 cm is perfectly sufficient. Where thermal insulation is also important, we recommend a greater thickness. We usually apply a minimum of 8 cm to the attic or side walls of residential buildings.

One of the advantages of foam insulation is that it resists structural damage/degradation and also resists settling. Purfoam has been used all over the world for more than 60 years, the experience is that it does not lose its thermal and waterproofing properties even during this time. According to the International Association of Certified Home Inspectors, the lifespan of sprayed foam is more than 80 years.

Purfoam helps to prevent attacks by insects and other pests, as it seals the gaps where rodents usually enter. The foam does not attract insects because it is not attractive as a food source. 

All insulating materials have one very important property: energy saving. Foam insulation can significantly reduce the energy required to heat or cool buildings. The use of insulation reduces electricity demand, helps conserve valuable fossil fuels, while reducing associated greenhouse gas emissions during power generation.

Some purfoam raw materials are produced from renewable sources, such as natural oil polyols based on soybean or castor oil. These natural polyols are chemicals that are mixed and reacted with other chemicals to create polyurethane foam.

Gases released during foam insulation and exposure to harmful chemicals can cause lung and eye irritation, shortness of breath, sore throat and fever. However, you can avoid these harmful effects if you use protective equipment during the production of foam insulation. 

We recommend that homeowners stay away from the area while the foam is being sprayed to avoid possible contact with the chemicals. The foam sets immediately and airs out, so you can safely return home after an hour or two.

Rub off the foam with a dry cloth, if necessary use acetone on the affected area to remove the particles. On external surfaces, you can use a pressure washer to remove particles.

 Closed-cell material can be used in combination with other insulation materials such as fiberglass, cellulose and foam board products. These cost-effective hybrid systems use closed-cell foam for insulation and air sealing, and use other insulations to provide assembly R-values that meet energy codes. 

Some materials have a paint smell for a few hours after application. They do not indicate a chemical hazard, but they can cause discomfort. To avoid unpleasant odors, it is recommended to thoroughly ventilate the work area. 

During the insulation, small polyurethane particles circulate in the air. These pic drops are difficult to remove. Impossible from most porous surfaces. On smooth surfaces, the purfoam particles can be mechanically removed with the help of polishing and washing materials. All surfaces that you want to protect from contamination should be covered before insulation!

A roof insulated with purfoam, if checked regularly and repainted every 5-20 years, can easily survive even the building itself! Regular, even annual, inspections of the foam are recommended to identify damaged areas, drainage problems, and to assess the condition of the coating.

Exterior work requires a protective coating on the foam to protect it from UV light and surface damage. Depending on the climate, the type of coating, and the overall thickness of the coating, these coatings last for 5 to 20 years. Regular checks should be made to determine if repainting is necessary.

Spray polyurethane insulation is installed at the same point in the construction cycle as other insulation. They usually insulate after installing water pipes, electrical wires, and heating and air conditioning ducts. If you install a solar panel on the roof, it is worth attaching the support brackets to the roof before the insulation. Overall, it can be said that it is recommended to do all the preparations before the insulation, so that the professionals who come after us do not have to damage the heat and water insulation we have made. 

No. Applying sprayed polyurethane requires serious equipment and a professional trained in the safe and proper installation of a polyurethane system.

To reduce noise, open or closed cell material is both a good choice.