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,

Urethane Foam Roofing Contractor SPF Spray Polyurethane. Welcome to Corona Coatings Corp. Welcome to Corona Coatings Corp., the Inland Empire s best value in exceptional quality spray polyurethane foam SPF roofing, wall. All Seasons Insulation The Spray Foam Specialists All Seasons InsulationThe Spray Foam Specialists Spray

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