downpipe discharging onto roof

[Thermo]

Ive had a dormer extension done to our house. It has a flat roof on top of the dormer and then a small pitched area below the windows of about 4 courses of concrete tiles. There was no gutter on the flat roof so the water was dripping all across the window cills and the pitched roof. I have know put a gutter along the fascia of the flat roof, and i need to run a downpipe down, but can only run it onto the picthed element to discharge it (no where else it can go because of the roof and conservatory at the back etc etc. Is it worth putting any sort of lead flashing under the point where it discharges?

 

[masona]

Just an idea, I've done one a couple of year ago and the client didn't a want downpipe showing and the only way I could do it was to run gutter on all side then use 135 degree piece where it hit onto the pitch roof (lead flashing behind it) so the rain continue to the lower pitch roof gutter.

 

[Thermo]

thats exactly what i had in mind masona, just wasnt sure if putting a flashing with it was ott, but i think ill er on the safe side.

Many thanks as always

 

[masona]

I've found this link from roofer which is very useful to give you some idea of shaping the lead. The chimney flashing idea might be the one to look at, you may have already seen this!

http://www.leadsheetassociation.org.uk/html/1405.html

 

[^woody^]

Is it worth putting any sort of lead flashing under the point where it discharges?

Not really, the roof should be waterproof already!

 

[Thermo]

just being belt and braces i suppose!