Spray Foam Insulation on a Roof with Water Tanks

1. Primer

First a bitumen primerPrimerThe thin first coat that goes on before the main material. It binds dust, seals the pores and helps paint or waterproofing stick firmly. goes over the whole roof, so the foamSpray polyurethane foamA foam sprayed on as a liquid that expands on the spot and sets into one seamless layer. It insulates against heat and cold and closes cracks and joints. bonds firmly.

2. Under the tanks

The primer also goes under the tanks, between their legs.

3. The feet

The tank feet are sprayed carefully, because they are awkward spots where leaks open easily.

4. Spraying the parapets

The foam also goes up the parapetsParapetThe low wall around the edge of a flat roof or balcony. The joint between it and the floor is one of the most common places for leaks., so the insulationThermal insulationA layer of material that lets heat through only slowly, so a home keeps its warmth in winter and stays cool in summer. rises well up the wall and there is no joint in the corner.

5. The corner

The foam fills the corner between floor and wall and joins the two surfaces into one continuous layer.

6. Around the pipes

Pipes, bases and walls are covered in the same foam, with no gaps in between.

7. Around the rooftop room

The insulation reaches the foot of the rooftop room and the edges of the roof.

8. The result

The whole roof is now covered. The foam insulates and waterproofsWaterproofingThe work and materials that stop water getting through on flat roofs, balconies, bathrooms, basements, planters and tanks. in one go, and keeps the home cooler in summer.