Best products / manufacturers for 110mm & 50mm pipe?

[Alan Ambrose]

That's it really. For the people with a lot of experience - what's the best quality go to manufacturer?

[crispy_wafer]

had a mix of polypipe and floplast. no problems with either.  I used weld-on 611 for solvent weld cement after having a string of poor results from using the gloop from screwfix.  A tube of the lubricant from toolstation has proved invaluable too!

[BadgerBodger]

Wavin-Osma and polypipe. Floplast seems to be the same quality. 

[BadgerBodger]

Naylor if you want twin wall. 

[Gone West]

I used Floplast.

[Nick Laslett]

Wavin Osma for drains according to my groundworks people. 

 

Interior SVP/waste any of the acoustic products like Wavin AS, Marley dBlue or Geberit Silent. 
 

I can bring a piece of Wavin AS to next meet-up. 
 

Edited March 21 by Nick Laslett

[Mike]

Hepworth SuperSleve (clay) below ground. No strong preference above ground.

[Alan Ambrose]

@Mike That’s interesting. No problem getting a pressure test?

[BadgerBodger]

  On 22/03/2025 at 08:53, Alan Ambrose said:

@Mike That’s interesting. No problem getting a pressure test?

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vitreous clay is a premium drainage product. Never seen it on Resi and not oft used in anything but public developments in my experience. I’ve always used it in schools and hospitals. It’s resistant to chemical attack etc. so suitable for labs etc. in cases like that you’d have vulcathene above ground and clay below. Some clay products are designed for resistance to thermal shock and can take 100 degrees+ water which PE/PVC struggles with. 
 

It’s a bit of a mare to work with IMHO. Requires experienced labour to install well. Easily damaged, very heavy for 225 or above. Re air testing it’s the same as any drainage, installed well no problem. Sloppy install, guaranteed issues. 
 

I’ve always had the least issues passing an air test with cast iron!! 
 

 

[Mike]

  On 22/03/2025 at 08:53, Alan Ambrose said:

No problem getting a pressure test?

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No, none at all. I used it professionally (as a manager) many times, always specified it when I had the choice, and have always used it on my personal projects, without problems. And although the pipes are a bit more expensive than plastic, you save money on stone fill & spoil removal (you can often backfill with as-dug material). And if you're unlucky and your trenches fill with rain, it definitely won't float, as plastic can.

 

  On 22/03/2025 at 09:58, BadgerBodger said:

It’s a bit of a mare to work with IMHO.

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I've only laid the 100mm personally and it's pretty easy. No problem to DIY single-handed if you're practically inclined, hire the recommended pipe cutter & follow the manufacturer's info.

Edited March 26 by Mike

[BadgerBodger]

  On 26/03/2025 at 22:29, Mike said:

 

 

I've only laid the 100mm personally and it's pretty easy. No problem to DIY single-handed if you're practically inclined, hire the recommended pipe cutter & follow the manufacturer's info.

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In fairness I’m inclined to  agree with you on the 100mm stuff. It’s heavy and cumbersome but solid. It’s the larger bore stuff I have had a lot of issues with damages.