We made the decision some time ago not to re-roof the lean-too as we find having a walled compound there very useful as somewhere out of the way to put the wheelie bins, ash bin etc.
In the right of this picture is a shed we christened "the bunker". This is now renamed as "the cow house", we removed the interior stalls and widened and raised the door hole so the cows can have free access to it for shelter in winter when needed.
We thought that the roof on this one wasn't too bad, but once Brian removed all the old ivy, leaf litter and other debris we discovered it rather resembled a sieve - its just that the muck was covering all the small holes. So a new roof it is. As you can see in the picture Brian has knocked out the front to make room to get the tractor in and has put in a ramp, so its ready now for the new roof when we have time.