Spray Foam Insulation on a Roof with Narrow Walkways

1. The starting surface

The roof was bare concrete, with solar water heaters and a lot of pipework that makes any job harder.

2. The narrow passages

There are very narrow passages around the rooftop room. They need insulatingThermal insulationA layer of material that lets heat through only slowly, so a home keeps its warmth in winter and stays cool in summer. just as carefully as the open roof.

3. Bitumen 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 on everywhere, including the foot of the walls.

4. Around the solar heaters

The primer reaches under the solar heaters and between the pipes, so no spot is left uncovered.

5. Spraying

Polyurethane 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. is sprayed over the whole surface and around the bases. It bonds to the primer and forms one layer with no joints.

6. The solar heater bases

The foam wraps the solar heater bases and pipes, where leaks usually start.

7. The result

The roof is now insulated and watertight from end to end, even in the hardest spots.