Remove guttering inside conservatory?

20 Oct 2017
Reaction score
United Kingdom
The previous owners had a conservatory fitted & did not change the guttering.

I'm now left with a 70mm pipe that runs through the conservatory.

My plan is to terminate it above the conservatory roof & install new flashing.

Reading Building Regs Part H states I'm okay to make this change but #H3-1.9:
Where a rainwater pipe discharges onto a lower roof or paved area, a pipe shoe should be fitted to divert water away from the building. Where rainwater from a roof with an effective area greater than 25m2 discharges through a single downpipe onto a lower roof, a distributor pipe should be fitted to the shoe to ensure that the flow width at the receiving gutter is sufficient so that it does not over-top the gutter.

Can someone explain to me what a distributor pipe is?

Sponsored Links
Can you connect a downpipe elsewhere on your house guttering and avoid this one all together.
@Notch7 - Unfortunately not, the conservatory runs the entire width of the property

@catlad - Is there a different name for this fitting, My google-fu is coming up empty for products. The best I've been able to find is 'downpipe spreader' but I can't find any purchase links
Sponsored Links
I would be tempted to put in a bend, run down pipe over the cons roof and into the box gutter.

Itll prob need an adjustable downpipe bend. Screwfix do a floplast one.

If you discharge directly onto the roof you will get staining and debris building up.
@Notch7 - I think you're right. discharging directly onto another roof will cause problems later on. I'm going to do what you suggested. Thanks.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local