Elements for ventilation
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Why roofs need to be ventilated In warm weather, temperatures can easily reach up to 80° C between the insulation and the roof covering. The hot air spreads to the rooms beneath the roof, negatively affecting the room temperature. In the cold and humid winter months, the external (cold) air meets the internal (warm) air in the cavity between the insulation and the roof covering causing condensation. Only correct air circulation where air enters through the eaves and escapes at ridge level can resolve this problem and prolong the life of your roof. Under-ridge ventilation element air outlet...

Eaves vents The air vent section in the eaves line must equate The air vent section in the ridge/hip lines must to at least 2% of the relative roof pitch and in equate to at least 0.5% of the relative roof any case, must not be less than 200 cm2/m. pitch in order to increase the pressure and trigger the Venturi effect. • Riwega advises 145 cm2/m. (approximately 25% of the 600 cm2/m opening) Under the roof covering The air vent section between the roof cover and the insulation must be more than 20 mm high and no less than 200 cm2/m along the pitch length. • Riwega advises at least 60 mm 1....

Riwega roof ventilation products Ridge elements Under-ridge accessories Under-ridge strip on a roll or rigid under-ridge element Batten support brackets and ridge tile hooks Eaves elements PVC or metal anti-bird spike strips and netting Staplers with spare staples Application of Riwega under-ridge strip 1. Fix the batten holder using nails or screws. 2. Fix the under-ridge supporting batten on the batten holder hooks using nails or screws. 3. Fix the under-ridge element to the batten using staples, nails or screws. 4. Remove protective liner from the adhesive part and affix the under-ridge...

Index: Ventilation products Under-ridge strip on a roll R11 ROLL - tech Clima ROLL s and ication ite: specif s ad the from the web nlo Dow m etails nical d ga.co ech t Rigid under-ridge element R15 Venti - tech Venti - tech Metal Batten support brackets and ridge tile hooks R17 Batten support brackets and ridge tile hooks Anti-bird spike strips Anti-bird netting on a roll Angled anti-bird netting Special accessories

The best choice for a cool roof in summer and a dry roof in winter • Passage of air in excess of 145 cm² on either side • Available in different widths and colours • Waterproof (with laid ridge) • Simple and quick to apply • Prevents access by birds and rodents Description and use: ROLL-tech, analysed by Riwega experts especially for use with curved tiles and roof tiles, is manufactured by a system designed by engineers from H+O, a specialist German company controlled by Riwega srl. ROLL-tech is composed on the outside of two coloured aluminium strips spread on the underside with a strip of...

Technical characteristics: Aluminium fold: ROLL-tech provides a +50% elongation (this means that for 1 m of product, 1.5m of folded aluminium is used) for the 400 and 370 models and +40% for the 310 and 350 models, in order to guarantee a perfect laying and a tight seal against water infiltrations, including on highly structured roof tiles and curved tiles, to which the aluminium strip fits perfectly, thus providing a stronger and more durable adhesion. Butyl glue: used to create a join between ROLL-tech and the roof covering, preventing water from rising up and birds and rodents getting in...

Uni AironRoll Under-ridge strip a roll • Ventilation according to current regulations • Seam between aluminium strips and polypropylene • Good value Description and use: UNI AIR ROLL Riwega is our under-ridge strip on a roll with high air penetration. The central netting, made of a special UV resistant fabric, guarantees ventilation in accordance with DIN 4108-3 standard. It is also impermeable to water, snow (with laid ridge tile) and prevents rodents, birds and insects from getting in under the roof. Keeps your roof dry, clean and at a moderate temperature. Technical details:...

under-ridge strip on a roll The under-ridge strip with dual central protection • Ideal for windy areas • Ventilation in accordance with current regulations • Dual protection against rain and wind • Available in 3 colours and 3 widths Description and use: Clima ROLL Riwega has a central section made of multi-layered fabric ensuring the passage of air and impermeability to water even in areas with strong winds. In fact, strong winds increase the risk of water rising from the roof covering with possible water infiltrations along the ridge line. Clima Roll offers the ideal, secure solution to...

under-ridge strip on a roll perfect ventilation • Entirely made of metal • Also available in copper • Ventilation in accordance with current regulations • Available in different sizes Description and use: analysed by Riwega experts to ensure the passage of air according to regulations and impermeability to water. It protects the „“under-tile““ area from access by birds and rodents. TIROLLAIR is available in aluminium and copper in different widths and colours. Its completely metal construction ensures its durability over time and resistance to all atmospheric agents (including UV rays). It...

Venti-tech 175 / 200 rigid under-ridge ventilation grille The tradition of a ventilated roof • Under-ridge ventilation grill made of rigid PVC • Ventilation in accordance with current regulations • With side brushes • Available in different sizes and colours Description and use: Venti-tech is an under-ridge element made of rigid PVC, with side brushes, that can be laid on any type of roof covering but is ideal for roofs laid with curved tiles. Thanks to the wide range of widths available for the PVC element, the height of the brushes and the colours available, Venti-tech combines with all...

Venti-tech Metal rigid under-ridge ventillation grille The tradition of a ventilated roof with the strength of metal • Top strip in galvanized iron • Side strips in aluminium or lead • Ventilation in accordance with current regulations Description and use: Venti-tech Metal is a rigid under-ridge ventilation element with top strip made of galvanized iron and side strips in aluminium or lead. It is not heavy and can be used on any ridge or hip line; therefore, it is easy and quick to install. The actual opening for air to pass through (100 cm²/m per part) guarantees perfect ventilation for...