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Pavatex Pitched Roof System Over 18° - Pitched Roof Insulation System

Verified by manufacturer 5 months ago

Soprema UK Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Pavatex pitched roof sarking system, with Pavatex DB 3.5 membrane (or OSB), Pavaflex insulation, and Isolair Multi, mechanically fixed.

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Application

External roofing applications.

Description

Pavaroof Pitched roof sarking system for roofs pitched steeper than 18 degrees uses Pavatex DB 3.5 membrane or OSB as the air-tightness membrane, with Pavatex Pavaflex natural wood fibre or Pavatextil P recycled fabric, friction fitted between the rafters. Isolair Multi (also wood fibre) is installed above the rafters and mechanically fixed.


Features and benefits:

  • Sustainable wood fibre boards are made from waste wood that is collected from various sawmills, heated and then pressurized.
  • Good heat storage capacity.
  • Good acoustic and thermal insulation properties.

General information

Color

Other

Guidance for specification option:

User to specifiy.

Material

Wood

Uniclass

Ss_30_40_10_60 Pitched board roof sarking systemsPrimary

CAWS

K11/55 Rigid board insulation fixed as roof sarking

K11/695 Rigid board insulation fixed as roof sarking

Specification data - Pitched board roof sarking systems

Boarding

-

Material

Wood fibre Isolair boards and Pavaflex insulation.

Guidance for specification option:

Isolair:

  • Can be used as a temporary roofing for up to 3 months.
  • Vapour permeable, but windproof and water-repellent.

Available in multiple thicknesses, consult manufacturer for details.


Pavaflex:

  • Adaptable to complex shapes.
  • Easy processing.
  • Outstanding insulating against thermal losses in winter and heat transmittance in the summer.


Available in multiple thicknesses, consult manufacturer for details.

Fasteners

Isolair: Mechanically fixed; Pavaflex: Friction fitted.

Membrane

-

Material

-

Manufacturer guidance

Breather membranes are not necessarily required over the Pavatex Isolair boards for roof pitches >18° due to the water resistivity of the Pavatex Isolair boards - BBA Cert 20/5770.

A breather membrane may be included if desired or if traditionally used as per local practices. The membrane should be directly over the boards i.e., under the counter and tile battens.

Counterbattens

-

Material

Timber.

Manufacturer guidance

Tiled or slated roofs with 50 x 25 mm tile batten: 25 mm minimum counter-batten height. To avoid splitting during driving the screw fixings, a 40 mm ±2 counter-batten height is suggested.

Vapour closed without tile batten (e.g. metal or synthetic membrane on ply): 50 mm counter-batten.

Fasteners

Pavatex by Soprema approved fasteners.

System accessories

Pavafix.

Guidance for specification option:

  • High adhesive strength, stable shape, cannot be overstretched.
  • Can be exposed to weather for up to 12 months.

Manufacturer guidance

Seek advice from Soprema for further information.

Execution

-

Manufacturer guidance

Installation must be carried out by a competent person and in accordance with Pavatex by Soprema's installation manual.

Vapour control layer

Pavatex DB3.5.

OSB.

Manufacturer guidance

Vapour open air tightness layer.

Waterproof covering

Tile.

Slate.

Zinc.

Membrane.

Sustainability data

Contains Red List materials

No

Country of material origin

-

Manufacturer guidance

United Kingdom/ France.

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

ISOLAIR AND PAVATHERM-COMBI SARKING BOARDS - Wood fibre material of different densities for use as insulating sarking boards on pitched roofs of dwellings and other buildings with similar temperature and humidity conditions.

Literature

Pavaflex - Flexible insulation board

Pavaflex - Flexible insulation board

Isolair Multi TDS

Isolair Multi TDS

Pavatextil P Natural Cotton Fibre Insulation

Pavatextil P Natural Cotton Fibre Insulation

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