A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparison Between the Conventional and the Inverted Additional Insulation of the Flat Roofs. 2 Ed
A considerable percentage of all roofs in Denmark are flat roofs covered with roofing felt and as all other types of roof these flat roofs require periodic maintenance. In the conventional method of applying external additional insulation to flat roofs the insulating material is laid on the existing roofing felt, which then functions as vapour barrier, and then simply covered with new layers of roofing felt (the conventional roof). With the inverted roof the method of application is, as the name implies, vice versa. Here the insulation is laid on top of the existing roofing felt which, perhaps having required repair, now functions both as vapour barrier and as watertight membrane. As there is only limited experience with inverted roofs under Danish climatic conditions, it was found essential that a comparison be made between the conventional method of applying extra insulation, the conventional roof, and additional insulation applied in the form of the inverted roof. During the experiments no substantial differences were found between thermal resistance in the conventional roofs and the inverted roofs without joints. On the basis of the tests carried out it is concluded that the inverted roof is considered suitable for Danish climatic conditions. However, calculations of thermal resistance for the inverted roof must take into consideration the reduced thermal resistance near the joints. (ERA citation 12:011526)
Comparison Between the Conventional and the Inverted Additional Insulation of the Flat Roofs. 2 Ed
A considerable percentage of all roofs in Denmark are flat roofs covered with roofing felt and as all other types of roof these flat roofs require periodic maintenance. In the conventional method of applying external additional insulation to flat roofs the insulating material is laid on the existing roofing felt, which then functions as vapour barrier, and then simply covered with new layers of roofing felt (the conventional roof). With the inverted roof the method of application is, as the name implies, vice versa. Here the insulation is laid on top of the existing roofing felt which, perhaps having required repair, now functions both as vapour barrier and as watertight membrane. As there is only limited experience with inverted roofs under Danish climatic conditions, it was found essential that a comparison be made between the conventional method of applying extra insulation, the conventional roof, and additional insulation applied in the form of the inverted roof. During the experiments no substantial differences were found between thermal resistance in the conventional roofs and the inverted roofs without joints. On the basis of the tests carried out it is concluded that the inverted roof is considered suitable for Danish climatic conditions. However, calculations of thermal resistance for the inverted roof must take into consideration the reduced thermal resistance near the joints. (ERA citation 12:011526)
Comparison Between the Conventional and the Inverted Additional Insulation of the Flat Roofs. 2 Ed
G. Christensen (author) / K. Prebensen (author) / M. Vesterloekke (author)
1986
84 pages
Report
No indication
English
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