Eurovent SYNTEX Synthetic Roof Underlay for Shingles and Slate 170 g/m², 61 m²

Eurovent SYNTEX synthetic roof underlay is a four-layer roofing membrane designed primarily for installation beneath bitumen shingles, wooden shingles and natural roofing slate. With high watertightness and exceptional tear resistance, the membrane is suitable for ventilated pitched roofs, including fully boarded roof constructions.

Eurovent SYNTEX features a four-layer construction with special stabilising additives that improve UV resistance. The membrane provides mechanical durability during installation and helps protect roof structures against moisture from the external environment.

Unlike highly vapour-permeable roof membranes, SYNTEX has low water vapour permeability. Its Sd value is approximately 40 m, with water vapour permeability of approximately 1 g/m²/24 h. Therefore, on insulated roofs, a ventilation gap must be maintained between the membrane and thermal insulation in accordance with the roof design. The membrane must not be installed directly on mineral wool or glass wool insulation.

Eurovent SYNTEX roof membrane is suitable for both fully boarded and non-boarded roof structures. The final roof covering may be installed without battens and counter-battens, provided the selected roof covering's installation requirements are followed.

The membrane has an area weight of approximately 170 g/m², reaction to fire class E and a declared UV resistance of 6 months. The technical data separately specifies a UV exposure time of 4 weeks, which should be considered when planning installation of the final roof covering.

Each roll measures 1.22 × 50 m, providing 61 m² of membrane.

Technical Specifications

• Brand: Eurovent

• Model: SYNTEX

• Product type: synthetic roof underlay

• Construction: 4 layers

• Area weight: approx. 170 g/m²

• Sd value: approx. 40 m

• Water vapour permeability: approx. 1 g/m²/24 h

• Reaction to fire class: E

• UV resistance: 6 months

• UV exposure time: 4 weeks

• Roll width: 1.22 m

• Roll length: 50 m

• Roll area: 61 m²

• Suitable roof coverings: bitumen shingles, wooden shingles and slate

• Application: ventilated pitched roofs

• Installation: on full sarking or a suitable roof substrate

• Direct installation on thermal insulation: not permitted

• Ventilation gap above insulation: required according to roof design

Key Features

• Four-layer synthetic roof membrane

• Exceptional tear resistance

• High watertightness

• UV resistance of 6 months

• Suitable for fully boarded roofs

• Designed primarily for bitumen shingles, wooden shingles and slate

• Sd value approximately 40 m

• Suitable for insulated and uninsulated ventilated roofs

• Final roof covering can be installed without battens and counter-battens where appropriate

• Stabilising additives improve resistance to UV radiation

Applications & Usage

Eurovent SYNTEX roof underlay is used as an underlay for ventilated pitched roofs, particularly roofs covered with bitumen shingles, wooden shingles or natural slate.

Typical applications include:

• Underlay for bitumen shingle roofs

• Underlay for wooden shingle roofs

• Underlay for slate roofs

• Fully boarded pitched roofs

• Non-boarded ventilated roof structures

• Insulated pitched roofs with the required ventilation gap

• Roofs with uninsulated attic spaces

• New roof construction and renovation

Important installation requirement: Eurovent SYNTEX must not be installed directly on thermal insulation. On insulated roofs, a ventilation gap must be maintained between the membrane and mineral wool, glass wool or other thermal insulation in accordance with the roof design.

When installing bitumen shingles, wooden shingles or slate, follow the roof covering manufacturer's requirements for substrate preparation and fastening.

Advantages

• Four-layer construction provides high mechanical durability

• Exceptional tear resistance helps reduce installation damage

• High watertightness helps protect roof structures against moisture

• Suitable beneath bitumen shingles, wooden shingles and slate

• Compatible with fully boarded roof constructions

• Stabilising additives improve UV resistance

• Allows suitable roof coverings to be installed without battens and counter-battens

• Suitable for insulated and uninsulated ventilated roofs

• 61 m² roll provides practical coverage for different roof sizes

Applications / Industries

• Roofing

• Bitumen shingle roof construction

• Wooden shingle roof construction

• Slate roofing

• Fully boarded pitched roofs

• Ventilated roof structures

• Timber roof construction

• Residential and outbuilding construction

• Roof renovation

• Roof covering installation