Installation of roof waterproofing
Modern private houses have roofs with one or four ramps, as well as multi-cliff roofs with turrets, penthouses and so on. The layers of the "pie" is strongly influenced by whether the space under the roof will be used, as a residential one. The standard roof should consist of the following order: rafters, insulation, vapor barrier, counter-rail, crate, roofing.
Materials for waterproofing the roof can be chosen different, but for flexible shingles, for example, you also need to make a layer of windproof membrane. Between the layers of waterproofing and roofing material, it is necessary to leave a gap for ventilation. If an attic is to be installed, the installation of the waterproofing is more complicated:
- A vapor barrier is made from the side of the room;
- Next, a heater is mounted;
- A windproof diaphragm is placed on top;
- The crate is installed;
- The roof is mounted on the crate.
If the house has a flat roof, then the waterproofing will completely depend on its type. Inverted roofs have a double layer of insulation and double waterproofing. If a flat roof is not used, then one layer of waterproofing is sufficient.
Note! To arrange a roof with a cold attic, it is enough to put anti-condensation film.
Liquid roof protection
The installation of waterproofing from hard materials is quite simple, but this is not the only way to equip the roof. It is also possible to conduct waterproofing using liquid materials based on bitumen. The advantages of this method include the absence of any seams. The most popular material is liquid rubber, which is made on the basis of emulsion and reagent-catalyst.
This mixture is applied with special equipment and after cooling becomes a thin elastic film. You can do such work only at plus temperature, but the operating temperature is from -50 to +90 degrees. The installation of the waterproofing for the already used roof is done in the following order:
- All cracks and irregularities are eliminated on the surface;
- Apply the first layer of mastic;
- Mounted rubberized membrane film;
- Apply the next layer of mastic.
Note! Installation of waterproofing with liquid mastic eliminates the need to make a vapor barrier.
Protection from steam
The qualitative arrangement of pitched roofs, especially with mansards, is impossible without a vapor barrier. We have already examined how the installation of waterproofing pitched roofs is done, and there is a layer of vapor protection. Why is it needed? Steam insulation is necessary in order to maintain the necessary regime of under-roof thermal insulation. It does not allow moisture to absorb the insulation, which significantly reduces its quality when wet.
Steam insulation of the roof, the material of which is a film, is made for roofs, the covering of which is not continuous( tile, slate, etc.).The separation of hydro- and vapor-insulating materials is rather conditional. So, often the vapor protection films are successfully used instead of under roofing waterproofing and vice versa. According to their characteristics, they are divided into three types: polypropylene films, polyethylene films and "breathing" membranes. Such a variety allows them to be used for any type of roofing.
Note! Despite the fact that the waterproofing and vapor barrier have similar characteristics and are partly interchangeable, it is better to use them for their intended purpose.
