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,

Solway Slate & Tile Home Home. Solway Slate & Tile Co. Ltd import, stock and distribute a wide range of pitched and flat roofing materials to roofing & building contractors and merchants. Roofing Contractors in n Area Yellow® NZ Roofing Contractors in n Area on Yellow®.

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