Bitumen roofs are one of the most long-lasting types of flat roof materials, easily lasting up to 30 years!
The roof requires a minimal slope to apply this covering. Thanks to that, for large buildings, bitumen covering is the most economically advantageous solution.
Bitumen roll material — one of the best-known types of flat roof covering in the construction world. Heat-applied bitumen materials are a relatively economical solution.
These materials differ from each other by their modifiers, or added properties. The most common modifier is SBS, which provides additional flexibility and very high heat resistance.
When applied correctly, they will provide excellent waterproofing.
Types of bitumen roll roofing depending on the type of covering:
- Materials covered with foil on both sides. These are used as the bottom layer of the roofing carpet, as a base or floor waterproofing. When using such materials, it is important to protect the roll material from ultraviolet radiation.
- Materials covered with film on one side and granules on the other. These materials are used as the top layer of the roofing carpet or foundation waterproofing. The granules provide reliable protection of the bitumen from UV radiation, and in the case of foundation insulation, they additionally protect the waterproofing from mechanical damage.
- Materials covered with film on one side and fine dust (sand) on the other. Such materials are used for foundation waterproofing of roads and bridges.
Properties of bitumen roll roofing material:
- The roofing material is very versatile.
- Bitumen roll roofing is used in both new building and construction of structures, road and bridge construction, as well as in repairs.
- With bitumen material you can make patches of various shapes and sizes or replace part of the roof.
Why choose bitumen roll roofing?
- reliable waterproofing
- quality material
- long-lasting use
Installation instructions for heat-applied roll bitumen roofing and waterproofing material
Before applying the material, the roof surface must be completely leveled and cleaned. If there is an old roof covering, it must be removed or restoration repairs performed.
If there is no old covering under the material to be applied, the concrete surface or leveling layer must be treated with primer before applying the roll material. Since this solution has low viscosity, it penetrates the pores of the primed surface and binds the dust that usually remains after surface cleaning. Such preparation guarantees optimal adhesion of the material to the base.
Once the primer is dry, the material can be applied using a gas burner, a trowel for sealing joints, and a cutting knife. If there are increased fire safety requirements at the site, hot air blowers can be used instead of open flame gas burners.
When applying the material, do not remove the polymer protective film from it, as it completely burns off when heating the material with a torch. If there is a protective film on the polymer, the material should not be applied on cold mastic or hot bitumen, as in that case the film may not detach at all or only partially, and proper adhesion of the material to the base will not be ensured.
Before applying the material, it must be fitted and marked. If necessary, the material should be adjusted using a roofer’s knife. After that, the material must be rolled back up.
By gradually heating the bottom (adhesive) layer of the heat-applied material, while simultaneously heating the base (or previously glued insulation layer surface), the roll is unrolled and the material is firmly pressed to the base. It is important to remember that overheating can damage the material, so it is recommended to use burner nozzles of different power depending on ambient temperature and material thickness.
Roll material must be applied with overlaps. Side overlaps should be between 7 and 10 cm, and end overlaps between 10 and 15 cm. For side overlaps, on material with coarse-grained surfacing, a 7–10 cm wide strip without surfacing is left along the entire length. At the designated end overlap areas, the surfacing must be removed beforehand by heating with a torch.
It is recommended to reheat the seams after applying the material and check for their tightness.
