our lean too looked a bit rough but we made it better very cheaply and very easily, silly to knock down when it can be fixed and you have done a good job.
Just asked about the roof as some one.....just a door knocker said they could do our roof, low grade asbestos and get rid on the quiet...I told him "on your bike" no way do I want to pollute others and especialy as I saw sheets of the stuffed dumped in a forest where I walk the dogs..prob the same person. We had a quote to repair and cover as its the lesser of the 2 evils, it was £700 but its a big area..there must be loads of the stuff around!!