A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Additional Insulation of Flat Roofs. Final Report
In 1977 the roof problem in 2,100 L-shaped atrium houses in Albertslund, near Copenhagen, had reached such an extent that thorough intervention was necessary. The actual testing program comprised 56 atrium houses. In addition two houses with corrugated asbestos cement on roof trusses as well as two two-storey row houses (without additional insulation) have been included in the project. In Albertslund the roof slope was altered from 1:100 to at least 1:50 in row houses and to 1:25 in the L-shaped garden houses in the final renovation, and integral gutters at fascia boards were replaced by external gutters. If additional insulation is applied on top of the existing roofing felt - which then acts as a new and more secure vapour barrier - the heat transmission through the roof, and consequently the energy consumption, will be reduced. Test programme consists in measuring temperature and moisture content in the roof deck (plywood) at different thicknesses of insulation, with and without ventilation of the cavity over the insulation in the existing roof components. Moisture content and fungal attack and temperature measurements were made by placing in the plywood deck a ''measuring disc-gauge'', in at least five measuring points. External additional insulation to a flat, ventilated roof constructed of wood-based materials has two advantages: The thermal insulation is improved and considerable energy saved, the protection against absorption of moisture is improved. Ventilation of the orginal roof cavity and water drainage from it should be provided. (ERA citation 10:008734)
Additional Insulation of Flat Roofs. Final Report
In 1977 the roof problem in 2,100 L-shaped atrium houses in Albertslund, near Copenhagen, had reached such an extent that thorough intervention was necessary. The actual testing program comprised 56 atrium houses. In addition two houses with corrugated asbestos cement on roof trusses as well as two two-storey row houses (without additional insulation) have been included in the project. In Albertslund the roof slope was altered from 1:100 to at least 1:50 in row houses and to 1:25 in the L-shaped garden houses in the final renovation, and integral gutters at fascia boards were replaced by external gutters. If additional insulation is applied on top of the existing roofing felt - which then acts as a new and more secure vapour barrier - the heat transmission through the roof, and consequently the energy consumption, will be reduced. Test programme consists in measuring temperature and moisture content in the roof deck (plywood) at different thicknesses of insulation, with and without ventilation of the cavity over the insulation in the existing roof components. Moisture content and fungal attack and temperature measurements were made by placing in the plywood deck a ''measuring disc-gauge'', in at least five measuring points. External additional insulation to a flat, ventilated roof constructed of wood-based materials has two advantages: The thermal insulation is improved and considerable energy saved, the protection against absorption of moisture is improved. Ventilation of the orginal roof cavity and water drainage from it should be provided. (ERA citation 10:008734)
Additional Insulation of Flat Roofs. Final Report
V. Korsgaard (author) / G. Christensen (author) / U. Lohse (author) / K. Prebensen (author) / J. Brandt (author)
1981
125 pages
Report
No indication
English
Additional insulation of flat roofs by means of prefabricated insulated large wood based components
| British Library Conference Proceedings | 2002