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,

Inspections City of Galesburg, IL State of Illinois Registration & Licensing. Architects and Structural Engineers The City of Galesburg is required by law to require all structural work in all. News The RegisterMail Galesburg, IL The latest nation and world news.. Updated May 27,at 751 PM

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