Old houses - the roofs covered with asphalt

In many old houses still check the roofs covered with asphalt. It has many supporters who are willing to replace old, worn - a new one. How can I do to avoid unnecessary costs and again to gain a strong roof over your head for many years?

Asphalt rubber was covered primarily two types of roofs - flat, mainly on cube-type buildings in the 60s and 70, and steep, the houses built during the same period and earlier. Before you decide to proceed with an indoor asphalt roof repair, an assessment of the existing coverage. When the repair is sufficient Whether the roof covered with asphalt only requires repair, or whether it is necessary to position the new coverage, determines the scale of damage.

When on a flat roof is only a few blisters, certainly do not need to put a new cover. However, it is necessary to purchli liquidation. It is to this end to cut it carefully - preferably when the weather outside is sunny. It should also be allowed to dry ground beneath them - at least for a few hours - and then felt the excess (resulting from the extension) to remove, and carefully seal the hole, for example, one layer of regular asphalt primer. Such treatment may be sufficient even for five years.

Cracks formed

Cracks formed on the coats of asphalt roofing apply to both flat and slanted. This is the result of interaction of UV rays. The sun makes the hydrocarbon chains, which is built mass of bitumen, be reduced and divided into smaller. As a result of this process, it becomes possible to evaporation of asphalt, with the result that the Pope appears in grid cracks. Such damage can be repaired and postpone the moment of laying a new cover up to four or five years. You can do mass dispersion, asphalt-rubber or emulsion (consisting of two insoluble liquids: water and asphalt. Repairs can also be done using a solvent preparation - solutions, weight asphalt. But this ad hoc maintenance - no sprinklers makes it even repaired the roof is still very vulnerable to the impact of weather - primarily solar radiation.
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