Construction

August 4th, 2009 by admin

Nowadays, roofs are made with the special purpose of protect them especially from rain. So the structure of a roof needs different elements such as cribs for the channeling of water.

¿How do cribs work? Well is kind of simple, it works line a cannel which collects water during a rain and that is located in the roof wing. It also leads water to the downspouts of rain. With the pass of the years it has become more resistant because it has been coated with elements such as cense and copper.

We recommend the use of cense as the best material to cover the cribs. It’s efficacy is well known by constructors provided it work in a correct way, with good tin-lead solders and expansions in order for it to not break with the different temperatures.

The length of a cense crib could be from 20 to 25 years before it rots and allows water filtrations.

On the other hand, we don’t recommend constructors to use asphaltic fabric to protect cribs from rain because asphaltic fabric  breaks easily and it doesn’t support very well water temperature changes from cold to hot and vice versa. It’s better to only use it in places where water only runs over the roofs and fall down and not in places where water rests on the floor.

However nowadays people use more and more asphaltic fabric because is more cheap and needs least manpower. Nevertheless the cost is bigger in time because it lasts less tan cense.