Technonicol cap sheet MIDA Top PV200S5 — thickness 5.2 mm; roll 5 m²

On a flat roof, the final layer faces rain, sunlight and temperature changes directly. A bitumen cap sheet is prepared for this task. It completes the covering with a durable waterproof surface and is suitable both for a new building and for renewing a garage or ancillary roof.

The characteristic mineral finish shields the bituminous layer from above, including from solar radiation. It also creates a uniform appearance visible from upper floors or an adjacent terrace. This is a key functional difference from an underlay: the cap sheet forms the system’s outer finish. Its surface must therefore provide protection while working under direct weather exposure.

In polymer-modified versions, flexibility helps the material respond to temperature changes. The reinforcement provides the mechanical properties required for the specific application. Together, these features allow a covering to be selected for a home, commercial premises or storage area. The benefit is particularly clear on large roof fields that heat up during the day and later cool down while continuously protecting the interior from water.

Bitumen membranes allow careful detailing where roof geometry changes. Upstands at parapets, connections around chimneys and details at the specified drainage components can all be formed. The top layer therefore continues its function beyond the middle of the flat roof field. It becomes part of continuous protection that also includes the edges. On a small outbuilding, this provides a practical covering without adding complex forms to the building.

During refurbishment, a suitable cap sheet can restore an orderly finish and the required protection. The installation method depends on an assessment of the existing layers and the selected system. This makes it possible to retain an older building’s function and form while preparing it for continued use. Such an upgrade suits a garage or ancillary space where interior refurbishment and protected equipment storage are planned.

Available products differ in construction and intended use, so the top layer must be selected for the complete roof system. Some products are also intended for single-layer solutions, while others work with an underlay. This choice allows the build-up to suit the particular substrate and building function. The result is a finished roof surface designed for its exposure conditions, with neatly completed details and a consistent appearance across the field.

SteelProfil supplies cap sheets at competitive prices and offers frequent promotions on roofing and insulation. Our wider range includes first- and second-grade materials as well as products available from stock. Select a membrane suited to your roof build-up and prepare a durable finish for the entire area.