top of page


Spraying PU foam under the roof / on the roof


Sprayed PU foam insulation is

Spray foam under roof or spray polyurethane foam insulation, also known as pu foam insulation, also abbreviated as SPF (spray polyurethane foam). This material has been used in construction to reduce heat for many years. Polyurethane foam offers both open cell and closed cell insulation properties with low thermal conductivity coefficent. The foaming is produced by a high pressure spray process. When the two materials interact, the effect is white foam along the spray line. There are 2 types of foam as mentioned above.

1. Open cell polyurethane foam, designed to contain large molecules and open the surface to be exposed to moisture in the air. Can exchange or allow air to circulate, no opacity, not waterproof For internal use only Cannot be used in waterproofing or waterproof works because of its water-absorbing properties. 

2 closed cell polyurethrane foam It has a molecular nature that closes when ejected. It has a density of 30-60kg/m3f, which is the type used in Phraelan in Thailand and almost all of them are like this. The inside of the foam retains gas for better heat resistance. 




Properties of SPF (spray polyurethane foam.

  • It has excellent thermal insulation properties.

  • SPF is the lowest thermal insulation in comparison with other materials.

  • When installing the foam, there will be no joints because it is sprayed homogeneously.

  • Excellent adhesion to roofing materials such as metal sheet roofs

  • No moisture or water absorption in the air


area of use

Damp proofiing Cream.jpg

Resolving moisture on masonry has different steps depending on the project or problem of the house or building. We recommend common damp wall repair methods for use in damp wall repair as follows.

  1. Check the humidity on the plastered walls. If there is wall paper, remove it before testing the moisture value. The moisture value should be below 14%.

  2. In the event that the humidity is quite high Need to remove the plaster wall to reveal the surface of the clay brick 

  3. Make a hole to prepare for compressing the solution. Which should be done at a height of approximately 150 mm. from the floor and a distance of 100 mm.

  4. Squeeze the Damp Proofing Cream contained in the tube and use the gun to fill the hole. Compress the solution at each drilled hole until it covers the length of the wall.

  5. check that the solution is full again

  6. Surfaces with salt stains or moldy mold can be cleaned with a brush and applied with fungicidal solution. Apply 1 coat.

  7. Making a primer for old cement with a formula to remove salt stains and prevent moisture 

  8. Plastering back again before painting


Line ID: orlanmax
Mobile: 089-545-6452

bottom of page