Love
The roof is sealed...with polyurethane rigid foam which can be applied form below on gable roofs and form above on flat roofs.in either case,the oven effect inducedby exposure to sunlight is avoided. and execess heat inside rooms, by way of the roof is prevented. by insulating roofs of all kinds we achieve the best k values.non air-conditioned rooms maintain comfortable temperatures with the insulation.
polyurethane rigid foam 
...is appliedby spraying and is the best insulation material in most application areas,as is shown by comparisation of different insulation materials.
Energy savings
...in the use of aircondiitioning units are tremendous as only a difference of a few degrees has to be regulated. coolness is lost and heat is abosorbed only throgh non-insulated areas. the capital costs of installing polyurethane rigid foam insulation  is paid back in a very short time through energy savings aione. 
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