Innoline®, the new tile-effect roofing sheet with a 20-year guarantee

A roofing solution designed for outbuildings

The market for outdoor buildings is evolving towards more refined structures that are better integrated with the home. Garden sheds, storage facilities, chicken coops, and carports now require solutions that combine sealingaesthetics and ease of installation.

With Innoline®, Onduline® offers a lightweight roofing sheet in a compact 94 x 80 cm format. The product replicates the visual appearance of a clay tile roof while retaining the characteristics of a bitumen roof.

This solution is suitable for both individuals and professionals working on light ancillary constructions, including roofers, maintenance teams or installers of external structures.

"Innoline® offers a particularly elegant cover."

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A technical design based on Compact Core Technology

The Innoline® sheet is based on Compact Core Technology developed by the manufacturer. This design combines bitumen reinforced with cellulose fibers to improve the product's mechanical resistance.

According to Onduline®, this structure provides better resistance:

• to impacts
• to the elements
• to temperature variations,
• to aging.

In the lightweight roofing sector, this type of material is primarily intended for structures with low permissible loads. The low weight of the panels is an advantage for secondary framing or small timber structures.

Each plate weighs approximately 2 kg. This lightness simplifies handling on site and reduces the need for lifting equipment.

A design office or a project manager can, however, verify the compatibility of the system with the roof slope, the ventilation of the structure and the local climatic loads, in accordance with the implementation rules applicable to lightweight roofs.

Simplified installation for low-pitched roofs

Innoline® is designed for installation on roofs with a slope of 15% or more. The system requires a continuous support without battens, which distinguishes it from traditional clay tile roofing.

Implementation is based on several steps:

Prepare a continuous and clean surface

Before installation, the roof must have a continuous, properly cleaned surface. This step determines the stability of the panels and the quality of the waterproofing.

As part of a light renovation, this preparation may include checking the wooden decking or roof support panels.

Position the front plates before fixing

The manufacturer recommends positioning all the panels before final installation. Installation should be carried out in the opposite direction to the prevailing wind to minimize the risk of water infiltration.

The plates are aligned from the gutter with a maximum overhang of 2 cm.

A tolerance is still provided for:

• up to 10 cm in the upper part,
• up to 4 cm on the sides.

These spaces are then covered by the finishing accessories.

Ensure coverage and waterproofing

The fixing begins in the center of the plates in order to preserve the overlapping areas.

Onduline® recommends using screws with an integrated sealing collar. Fasteners should be placed at the crest of the corrugation, not in the trough, to minimize the risk of water infiltration.

The overlap between plates must reach at least one wave horizontally and vertically.

"Attach them at the crest of the wave, not in the trough, without tightening them too much."

This installation method is in line with the usual practices of ribbed roofing systems used on small ancillary structures.

Finishing accessories to enhance waterproofing

The manufacturer completes the system with edges and ridges adapted to the profile of the plates.

These elements perform several functions:

• protection of the side banks,
• ridge sealing,
• aesthetic homogeneity of the roof.

The recommended overlaps reach 15 cm for both the edges and the ridges.

In projects exposed to wind or heavy rain, these accessories contribute to the continuity of the building envelope. Their installation must comply with the manufacturer's instructions to guarantee the advertised performance.

A lightweight alternative to traditional blankets

With its tile-like appearance available in black, anthracite or sienna, Innoline® seeks to reproduce the appearance of a traditional roof without the weight constraints associated with terracotta tiles.

This approach can meet the needs:

• garden sheds,
• independent garages,
• carports,
• leisure facilities,
• small technical rooms.

The compact format also makes it easier to transport the plates in a private vehicle, which can simplify the supply of small construction sites.

This solution, however, remains intended for outbuildings or lightweight structures. For projects subject to significant structural constraints or specific local regulations, prior verification of technical and urban planning requirements is still necessary.

With Innoline®, Onduline® is thus strengthening its positioning in the lightweight roofing segment by offering a solution focused on speed of installation, the aesthetics of exterior annexes and the durability of small residential structures.