Conservatory base

[david.cawkwell]

I'm planning on adding a conservatory in future.

I am thinking of a conservatory with no dwarf wall. UPVC/glass panels to the ground.

So I think a concrete pad base will be easiest.

I was planning to put a damp proof membrane down and up the wall of the house. The base will still be a step down from the kitchen door and be below the damp proof course of the house. I am planning to move my spa bath into the conservatory. What mix of concrete and thickness would be suitable? I would have thought 6 inches should be good enough.

My only other problem is that the drain for the kitchen sink will be within the conservatory. How best can I deal with this as I don't want smells from the drains back into the conservatory. The drain will also need to be available for excess flow from the spa bath.

Any suggestions or advice.

[sm_jamieson]

The only proper way to deal with smells is to alter the drains. You can put in a stub soil stack, and drain into that, removing the old gully completely. Or even drain straight into a new access chamber (with double-seal lid if it ends up in the conservatory) Make sure that any rain water does not end up in the sewers though, unless you have a combined sewer system in your area. You may want some new drainage specifically for the hot tub. Like a trapped drain in the middle of the floor for splashes ? The reason why kitchen sink drains particularly end up smelling is that bits of food go down - they really are better going straight into the sewer I think.

Finally, as total bodge, you can build an air-tight box (tricky) with access lid around the drain and put a plant pot on top !

Simon.

[david.cawkwell]

Thanks for that. I thought I should mention that I am not on mains drainage. There are two drain pipes one from under the kitchen sink another from the downstairs toilet. These meet up and go straight to a septic tank. A current soil stack is near the toilet.