The strength of the formed sheet is given by the impregnation with bitumen, which takes place under some temperature criterion and overstated pressure.
A special point for obtaining strong color is contained in the correct observance of technological steps. The Ondulin sheet is certainly obliged to enter the paint stage when bitumen impregnation, and not on the contrary. It is in this case that over the course of not the least 12 years, such roofing material will save its own pretty external appearance. Recently, stained -glass windows for the kitchen are chosen with the mind.
The next step is the profile shredding on separate sheets and wrapping with a plastic film for protection from damage during transportation. Speaking of the top, the colossal snow load, the ondulin sheets withstand, withstand real fluid winds. In addition to this, an ondulin production company provides a guarantee of water resistance not to such an extent than 12 years, but in general, the service life of such a roof is not the least half a century.
Increasing the reputation of this type of roofing material is facilitated by lightness in laying and a small number of additional parts, which include, not counting the pediment or skating components, only special nails painted under the paint of Ondulin sheets.