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What type of roof construction should you use on your extension?

 
Chris Brookman
(@chris)
Member Admin

Again, as with the walls, there are two main types of roof. Pitched roofs (pitch greater than 15 degree angle) or flat roofs (pitch less than 15 degrees)and which you use depends on the constraints of your project and probably the type of roof the existing building has. 

The options are rather more limited on roofs as they are almost always timber so either way, we’d suggest using solid timbers and insulation between and on top of the rafters. Pitched roofs tend to be the default and would be covered with tiles or slate. Flat roofs would tend to be used on buildings that do not have the height for a pitched roof or are looking for a modern box type appearance.

To see what we’d suggest click the relevant link below:-

Detail for pitched roofs - click here

Pitched roof specification - click here

Detail for flat roof - click here

Flat roof specification - click here

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Topic starter Posted : 09/03/2021 6:06 pm
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