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,

Boyle Mill, Boyle, County Roscommon Buildings of Ireland. Reg. No. 31804039 Date 1840 Previous Name N/A Townland MOCMOYNE County County Roscommon Coordinates 179862, 302442 Categories of Special Interest. Map of Roscommon, Roscommon Map, Roscommon, Roscommon Map. View a map of Roscommon, County Roscommon. Zoom in and

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