Construction details
5.3 Junction with wall • Liquid waterproofing
A skirting of liquid waterproofing does not necessarily need to be fixed with a clamping bar; the protective sheet metal is simply riveted to the panel. The skirting height required is measured from the top edge of the roof finishes, but if it is measured from the invert of the drainage channel, then the channel must be connected directly to the drainage system and further conditions specified in the Flat Roof Directive must be complied with, e.g. the sill in the facade must overhang the roof finishes by min. 5 cm. The insulation in roofs intended for foot traffic should always exhibit an adequate compressive strength, and that of the insulation adjacent to drainage channels should be even higher.
5.4 Penetration • Bitumen waterproofing
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The waterproofing at this detail has been improved by using a post base section with a diameter larger than that of the post itself. The base plate is embedded in the vapour barrier with the help of a strip of elastomeric bitumen waterproofing material. A sheet metal sleeve is slipped over the base section and integrated into the roof waterproofing. The advantage of using sheet metal is that it is much less vulnerable to damage. The post itself is bolted to the base section.
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Concrete flags Chippings Protective membrane Liquid waterproofing Bitumen facing Rigid plastic foam board Vapour barrier Primer Reinforced concrete Mesh to prevent loss of chippings Drainage channel Sheet metal skirting Fixing angle Acoustic board Panel filled with cellular glass
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Concrete flags Chippings Protective membrane Bitumen waterproofing, 2-ply Rigid plastic foam board Vapour barrier Primer Reinforced concrete Post Bolt Sheet metal sleeve Steel post base Elastomeric bitumen waterproofing
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