PITCHED ROOFS

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Warm roof, insulation under bonded bituminous membrane.

Ventilated roof, insulation under sheath.

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Ventilated roof, insulation above sheath.

Warm roof, insulation under bonded bituminous membrane.

 

1.Hallow-core concrete slab

2.Vapour barrier

3.SUPERCEL VITRUM

4.waterproof bituminous membrane

5.Fascia Board and gutter

6.Roof cover in slates or tiles

The warm roof, which is a widely-spread applicationwhere all layers are adjacent and rest on each other, is used also in pitched roofs. In this particular application, the insulation panel must be placed on an underlying membrane that acts as a vapour barrier and under a synthetic or bituminous waterproof membrane. The waterproof membrane is very important, since it protects the underlying layers from water leakage especially in case of breakage or deterioration of the tiles or slates.

The insulation panel must have a high resistance to heat, bitumen solvents and compression. The presence of the underlying vapour barrier is essential for the correct functioning of the system. It is to be noted that the application by torching is not recommended. 

 

SUPERCEL VITRUM is the best option when it comes to applications that see heat-bonded bituminous membranes, where molten oxidised bitumen is spread on the surface of the panels.

Ventilated roof, insulation under sheath.

 

1.Roof slab on wooden structure

2.Fascia Board and gutter

3.Watertight vapor barrier or breathable vapor screen

4.SUPERCEL VITRUM

5.Water-proof breathable parking membrane 

6.Roof cover in slates or tiles

The cold roof, also called ventilated roof, is applied mainly on wooden structures and residential buildings. In the stratigraphy, a ventilation space is left between the insulation panel and the tiles or slates roof covering.

The tiles are placed as roof covering, on wooden slats or metal frames that act as batten, this is done in order to create an air chamber between the insulating layer and the roof covering itself. The ventilated air chamber avoids the formation of condensation that usually forms beneath the tiles in specific climatic environments. The ventilated roof stratification also prevents solar radiation from overheating the roof.

 

The insulation panel will be placed on top of a water-tight vapour barrier and below a waterproof

membrane which is vapour-permeable. Alternatively, you can consider both an underlying and overlaying layer of membrane that acts as vapour screen, which is water-proof and vapour-permeable. This second option allows for the regulation of water vapour flow coming out of the internal environment.

 

SUPERCEL VITRUM is the preferred insulation solution in this type of application. You can also useSUPERCEL ALUMEN.

1.Hollow-core concrete slab

2.Fascia board and gutter

3.Watertight vapour barrier or breathable vapour screen

4.SUPERCEL FLAMMA

5.Roof cover in slates or tiles

This type of ventilated roof provides insulation over the waterproof membrane, which is laid on the bearing structure. The insulation panels are placed starting from the fascia (straight board that runs down the lower edge of the roof) which supports the gutter. The panels are then joined together by means of self-adhesive strips, which must have scarce/null water absorption characteristics and low coefficient to vapour diffusion. Particular attention must be paid to under tile micro ventilation, necessary both to reduce thermal excursions and to dry any water and condensation infiltration.

 

The under-tile micro ventilation is ensured by laying a single or double frame of wooden slats, which support the tiles or slates. The frame is mechanically fixed by means of dowels of a length such as to pass through the ceiling, which offers a base of at least 3/4 cm.

In case of double frame, a second horizontal batten must be placed above the first, and can be mechanically fixed to the first by means of metal nails. This second batten provides support for tiles or slates.

 

To achieve the objectives of micro ventilation below tile, SUPERCEL FLAMMA is the most suitable panel in our range. Its coating is formed by a layer of glass fibre and a layer of breathable membrane that makes it impermeable to infiltration of water and air, keeping the vapour permeability properties, inherent to the material itself, intact. In areas exposed to strong solar irradiation, it is advisable to use the variant SUPERCEL ALUMEN, which other that the above, also reflects the solar rays thanks to the aluminium finishing layer.

 

Ventilated roof, insulation above sheath.

General recommendations of build up: laying and securing Supercel Building panels. Membrane positioning, general application system.

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