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Post by DIYDafty on Mar 4, 2023 23:27:51 GMT
If I build an extension, the sink will be in the middle of the kitchen..... How to do it and pass building control? Are you allowed to sink a 50mm pipe in screed? Maybe need to wrap it in something? I guess I could use the existing 40mm plumbing which goes out the back wall and then heads down into the ground. To do that I think I'd need to dig down first in the existing kitchen and then out below ground level. But is that the best way and is it allowed? I know a lot of my questions might seem a bit random but I'm thinking of what my next big project will be. I've always wanted a snooker table and a couple of fruit machines and for that I need an extension. I'll only be allowed to do it if I also make the kitchen bigger..... I'm thinking about doing it all myself (except the bricks, and the wooden/structural part of the roof). If I do get that far I'll be sure to document it here  |
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Post by dickpuller on Mar 5, 2023 9:32:41 GMT
A centre Island is great, but for Drainage I’d put a 110mm Orange drain in the screed. For an extension you’ll be alternating Drains anyway.
Make friends with your LABC, even a Fag Packet sketch with your ideas & a meeting with them will save you in the long run.
👍👍
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Post by DIYDafty on Mar 5, 2023 22:48:24 GMT
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Post by DIYDafty on Mar 5, 2023 22:56:15 GMT
Right looking at this more, to put in a new 110 drain pipe would mean connecting to the "public sewer" which I could see costing a lot as Thames Water would need to be involved.
There is an existing 40mm pipe that runs outside the wall to the manhole close by. I could use that but then Building Control might not like it?
Fking hell. Too many rules !
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Post by joinerjohn on Mar 5, 2023 23:16:08 GMT
You might want to consider power/ electricity and possible gas supply to the island as well 😉😉
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Post by dickpuller on Mar 6, 2023 8:04:16 GMT
Do you need to alter any drain? Drain that’ll be within the perimeter of the new extension?
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Post by DIYDafty on Mar 6, 2023 14:20:02 GMT
I don't think so as the existing shared drain isn't in the footprint of the extension.
I'll post up a back of fag packet sketch of it a bit later....
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Post by DIYDafty on Mar 6, 2023 19:28:43 GMT
You might want to consider power/ electricity and possible gas supply to the island as well 😉😉 Yeah v good point. Thought I'd start with the hardest and then move to the next problem.... |
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Post by battle1066 on Mar 6, 2023 20:19:01 GMT
I find people do some wonderful extensions - especially kitchen ones but the most common problem is there poorly ventilated for the real art of cooking, were extraction is key, so the whole house dose’s smell for days.
Then the ones which haven’t compensated for the sun and its a green house or fridge depending on the season your in is another major issue.
I’ve only ever came across one what was an acoustic nightmare so it pays to research it well for you needs and aspirations.
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Post by dickpuller on Mar 8, 2023 11:05:57 GMT
I don't think so as the existing shared drain isn't in the footprint of the extension. I'll post up a back of fag packet sketch of it a bit later.... I think LABC will require all drains to be 1M from the exterior of your Extension. Common Sewers maybe more. A 40mm Waste Pipe in the slab is crazy, forget that. Get a 110mm Drain in for the Island. Obviously, altering/extending your Drains & not sewers is more favourable. Sewers are adopted by the Water Authority, much higher specification & more stringent etc. Get at least two 4” Ducts popping up at the Island & terminated where the nearest Water & Leccy are situated. If you’re having a concrete slab floor & say Floor Tiles, put in Under Floor Heating, you’ll not regret it👍👍 |
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Post by DIYDafty on Mar 8, 2023 14:55:42 GMT
I don't think so as the existing shared drain isn't in the footprint of the extension. I'll post up a back of fag packet sketch of it a bit later.... I think LABC will require all drains to be 1M from the exterior of your Extension. Common Sewers maybe more. A 40mm Waste Pipe in the slab is crazy, forget that. Get a 110mm Drain in for the Island. Obviously, altering/extending your Drains & not sewers is more favourable. Sewers are adopted by the Water Authority, much higher specification & more stringent etc. Get at least two 4” Ducts popping up at the Island & terminated where the nearest Water & Leccy are situated. If you’re having a concrete slab floor & say Floor Tiles, put in Under Floor Heating, you’ll not regret it👍👍 Yes 110mm that makes sense. THames Water do a "self certify" buildover agreement which I've tested I can pass so long as extension is more than 500mm from the sewer and nearest manhole. Also some other stuff in there. I didn't get your point about two 4" ducts ? Maybe 2" pipes popping up for sink and dishwasher? Or were you referring to ventilation (but that would be in the roof space I think) I will get that diagram posted up coz my main problem I think is drain flow direction - my drain would have to do a U turn ! |
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Post by DIYDafty on Mar 8, 2023 14:56:46 GMT
And thanks a lot for your valuable time Dick.
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Post by joinerjohn on Mar 8, 2023 22:02:58 GMT
I think Dickie’s correct with 4” ducts at least for the incoming water and possibly drainage. You’re still going to want leccy feed ( could be done in 2” ) But another consideration is if you perhaps want a gas supply there too ?
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Post by DIYDafty on Mar 8, 2023 23:37:07 GMT
I'm more confused than ever now.
Don't I just need a 40mm or 50mm waste pipe to rise up into the island? Although not sure how to connect that to the 110 drain down below.
Gas I'm not having there and mains water is something else - probably a philmac under the floor to extend the existing alkathene into blue mdpe if that's allowed.
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Post by dickpuller on Mar 9, 2023 6:50:35 GMT
I'm more confused than ever now. Don't I just need a 40mm or 50mm waste pipe to rise up into the island? Although not sure how to connect that to the 110 drain down below. Gas I'm not having there and mains water is something else - probably a philmac under the floor to extend the existing alkathene into blue mdpe if that's allowed. At the Island have a 110mm Pop-Up for drainage & Two 4” Ducts for Water, Leccy etc. Don’t fanny around with anything smaller than 4” for an Island. |
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