Green Roof Insulation Value

A green roof system provides good sound insulation keeps the living space quieter and creates more pleasant surroundings in urban areas and it contributes to noise.

Green roof insulation value.

Researchers estimate that 1m 2 of a green roof can help to absorb 0 2kg of airborne particles from the air every year. This may not seem much but for the human ear an 10 db reduction in noise levels is 50 quieter. The protective layer can be a slab of lightweight concrete insulation. The extra layers of a green roof also serve as insulation.

The roof s membrane needs protection to prevent deterioration. A dark heat absorbing roof surface increases demands on mechanical systems making it more difficult to adequately cool a building whereas a green roof reduces the temperature of the roof and therefore the building itself. What is the r value of a green roof the most common request i get from architects and engineers is for the r value of a green roof system. The degree of sound insulation will depend on the thickness of the green roof structure.

In order to make sure we are all clear on how insulation works particularly in a green roof system we need to take a little journey through the lexicon of insulation terminology starting with. A light weight extensive green roof can include insulation below the membrane. Every construction design architect engineer a e knows a material s r value is an important factor when specifying insulation products with many regulations requiring minimum values for wall ceiling and roof assemblies. For things like loft insulation and cavity insulation it s relatively easy to assign a u value because the material never changes.

Green roofs reduce sound resonance by 3 db and provide sound insulation of up to 8 db. Experiments and measurements in a laboratory can test the insulation value of the product. A green roof however is in a constant state of flux.