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,

거터 관리 및 수리 Gutter Maintenance and Repair 거터Gutter는 올바르게 설치만 해주면 최소한의 관리만으로도 반영구적알루미늄 거터의 경우으로 사용할 수 있다. French Drain Systems for AL Basements Warranted French. AFS Alabama Foundation Specialists repairs wet basements with their patented French drain system, provided with a warranted installation

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