Open ValleyThe Open Valley
Enclosed dales are favoured by builders for their esthetic quality and quick and easy assembly. You do not need any supplemental material for the setup or the number of supplemental stages that an open valley needs. Shortshingles are placed at the crossroads of the plains for a covered valley.
The roof tiles go further up the valley with every new membrane. "Living quarters still prefer enclosed valley system because they are cheaper and the client already has the necessary material available," says Tessaro. Tessaro points out, however, that in a sealed valley system glaciers and waters do not flow off as quickly and the continual build-up and drainage of waters during a storm can lead to granulate wastage.
And while some home owners favour the aesthetic of a sealed valley, the harder and fatter the shingles are, the less likely it is to lay level above a gap. In an open valley, a plate (usually iron, sometimes copper) is fixed to the rooftop terrace. As a rule, the prepainted surface of the shingles is used to optimally supplement the colour mixture of the shingles.
"And when years later there is a problem with rooftop leakage or other damages, an open valley system is often simpler to fix or replace," says Tessaro. Share your experiences with open and enclosed valley treatments with us.