The main factor that may weaken the stability of the roof structure is dampness. On its negative impact it is particularly exposed rafter framing, which deform under impact of water. Therefore is important roof protection against getting in  water into its internal structure.

Typically, investors during the construction of the roof attach great importance both for building materials, as well as careful execution. Unfortunately, later very often they forget about the survey, and any minor defects  commission outsource cheaper and often non-professional roofing companies. This is a big mistake,

Kalzip flat roofing systems Costeffective solution for flat/low pitched roofs The durability, ease of installation and maintenancefree nature of Kalzip also means it offers a costeffective. Elastex polyurethane roofing system polyurethane. Products Elastex. Elastex is a highly flexible, coldapplied singlepack reinforced polyurethane overlay system that is

A very important element that must be considered when the roof is projected, is ventilation, allowing drainage of excess dampness from under the roofing.