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3. Existing waterproofing
3.1 Study for the conservation of the old waterproofing
Waterproofing can only be retained in compliance with current regulations, i.e. only if the required diagnosis is positive. First of all, it is necessary to define the new function assigned to the retained waterproofing.
This can be :
support for new thermal insulation, the thickness of which must be calculated. It can be used as a vapour barrier, except in the case of synthetic membranes such as PVC, pasty plaster or volcanic cement. Note that DTU 43 – 5 describes some exceptions to this rule:
support of new thermal insulation on a metal support of ribbed steel sheets (TAN), conservation possible, even if a vapour barrier...
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Existing waterproofing
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Bibliography
Websites
AFNOR http://www.afnor.fr
Agence Qualité et Construction http://www.qualiteconstruction.com
Standards and norms
Unified Technical Document (DTU)
- Travaux de bâtiment. Étanchéité des toitures. - DTU 43 -
French standards
- Travaux de bâtiment. Réfection des ouvrages d'étanchéité des toitures-terrasses ou inclinées. Partie 1 : cahier des clauses techniques. Partie 2 : cahier des clauses spéciales (référence commerciale du DTU 43.5). Indice de classement : P84-208. - NF P 84-208 - 11-02
- Travaux...
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