Leaking roofs

There is only one reason to do some work on the roof when its really really hot . Being embarrassed is the reason I replaced the valleys on the old part of the building this week.

There is something worse than having mice in your house . Its having the roof leak in front of the visitors and onto the computer desk as you are desperately trying to do something .  
Its worse than mice because I am supposed to know what I am doing with house repairs and have probably " fiddled" with the problem before .
 "Get some more buckets "she says as the visitor struggles to drink her tea and avoid a conversation about the embarrassing scene before  her. Son is not happy as the drips are landing on his computer work .
The valleys I replaced on 3 hot days in January 2012 meant I had to remove the tiles .  . It was 9 am in the morning  I finished the job.  I  was thinking how clever i was NOT to break the tiles as I replaced the valleys over the last few days of incredibly hot weather . The tiles I had taken off were by 9:30 too hot to touch .

The only other 2 valleys on the house were created when I built the extension in the 1990's and were in good nick .( picture )  As always strong hardwood battons - they only thing to carry my weight .
One day might make the roof a better energy source and convert the roof to zincalum . Not so sure about that , as for the last 80 years its not  not the copper wire that hold the tiles on , the tiles or the hardwood,  but the zinc-alum that doesn't last .
We have yet to get some rain to see how good my work on the old part of the building has been.