Indications
The need to guarantee a sure seal of the mantle, also because of the impossibility of carrying out
maintenance once the work is finished, requires great attention in the design and in the perfect realisation of the “packet”.
To identify the area of intervention, in the event of accidental breakages of the mantle, subdivide the roof with small ridges.
The characteristics of the complementary materials are highlighted only to indicate a good level quality standard.

Specification wording
Preparing the foundation
Vapour barrier
Laying Stiferite panels (D specifications))
Waterproof mantle composed of two bituminous membranes with polyester fibre reinforcement, no less than 4 mm thick and weighing no more than 4 kg/m² each.
Laying the first membrane and applying the second membrane, of the “anti-root” type, vulcanising it with a hot torch.
Protection layer consisting of non-woven polyester fibre felt with weight 200 gr/m².
Distribution of the drainage layer, laying of the filtering layer and of the earth.

Products
Class B
Class S