Soft bituminous shingles (bituminous shingles, shingles shingles or shingles) are designed for pitched roofs with a slope of more than 6 °. These are small flat sheets measuring 100x34 cm, with curly cutouts along one edge. There is a wide range of shapes (ovals, waves, hexagons, rectangles, triangles, rhombuses, etc.) and a huge variety of colors.
The small weight of the tiles (about 8 kg per 1 sq. m.) eliminates the need to reinforce the supporting structure of the roof, building and foundation.
Composite tiles are suitable for pitched roofs with a slope greater than 12 °. Small (compared to metal tiles) sheet sizes - from 128x41 cm to 135x41 cm - reduce waste and simplify work.
Profiles are varied: from the traditional classic, creating the effect of natural tiles, to high-tech style. The choice of colors is no less wide and ranges from classic color schemes (coffee, gray, green, blue) to a multicolor palette (slate gray, terracotta yellow, coffee gray). Weight 1 sq. m of coverage no more than 7 kg.
The basis of soft tiles is fiberglass or organic cellulose. An astringent is applied to the base: oxidized bitumen with various polymer additives or a bitumen compound. Top - dressing (basalt granulate or mineral chips), which provides the coating with protection from weathering and UV rays.
Bottom - silicon sand, which protects the tiles from sticking to each other during transportation and storage (traditional tiles), or a self-adhesive layer of special bitumen, protected with plastic wrap (self-adhesive tiles).
Soft tiles are easy to transport (even in a car) and store. No special tools are required for installation. However, it should be borne in mind that under the soft bituminous shingles on top of the sheathing, you need to prepare an even base that retains its geometry and holds nails well (to e.g. OSB board, plywood or edged board).
Among the advantages of bituminous tiles are an attractive appearance at a low cost and adaptability to any geometric shapes of roofs. The coating makes almost no noise during rain and hail, does not absorb moisture, does not corrode and decay, withstands deformation during building shrinkage, as well as temperature drops and strong gusts of wind. The material does not fade and does not require touch-up during operation. At the same time, accidental damage to the coating can be easily repaired due to the small size of the elements and their interchangeability.
The basis of a composite tile is a steel sheet with a thickness of 0.4–0.5 mm. It makes the material strong and lightweight. The steel sheet is coated on both sides with an aluzinc alloy (aluminum, zinc and silicon), which perfectly protects against corrosion. On the outside, natural stone granules are applied. They not only give the coating a beautiful, respectable appearance, but also protect it from corrosion, temperature extremes and contribute to sound insulation (the roof does not make noise in rain, hail and wind).
On top of the granules are covered with a transparent acrylic glaze, which promotes self-cleaning of the coating in the rain and provides resistance to UV radiation. Due to this, the color of the tiles remains throughout the entire service life of the material (50 years or more). Another advantage of composite shingles is fire resistance.