Hello,

We have a car port on the side of our house. It is a brick wall
several feet away from the house with wooden joists running between
the wall and the house. On top of these is wood, on top of which is
roofing felt. When we moved in recently, the surveyor said the roof
would need attention.

If we were to replace the flat roof with another flat roof, I imagine
the process is to remove the old felt and to examine the wood
underneath. If the wood is rotten, it will need replacing, otherwise
just put new felt down? Is this about right?

What if we wanted to put a pitched roof on? Would it be a matter of
attaching a wooden batten slightly higher up on the house side and run
sloping joists to the other wall?

For a car port, I imagine I could use plastic sheets rather than real
tiles?

What are your suggestions?

Thanks.