How to glue lead gutter to plastic gutter on conservatory wall.

[jocollett]

Hello
I wonder if you can help me with this issue?
I noticed a green slowly growing stain on the inside wall of my Dad's conservatory in one of the corners at the top. The conservatory is built where there was a wash-house so it sits inbetween the house and the remaining wash house on the property boundary. It's got a gutter that doesn't seem to have any fall and water just pools in it.

On the corner where the stain is the lead gutter along the back meets a plastic section of guttering and there is a sizable gap between the two. I can't remember which one sits above the other but water gets between the two and since it doesnt drain, it just seeps into the wall.

Is there a way I can glue this down with something. Whats the best stuff to glue plastic and lead together?
Thanks

 

[^woody^]

You can't glue the two as they are each highly prone to movement at different rates. You can seal gaps with Leadmate, or a similar sillicone/polymer mastic.

 

[jocollett]

OK thanks woody. I'll have a look for some of that stuff.

 

[Terrywookfit]

There used to be a product called "Rito" that we used to join cast iron gutter .
It was a Black non setting Bitumastic sealant.

 

[Alastairreid]

https://www.raygrahams.com/products/129345-rito-bituminous-mastic-25kg.aspx