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Sorry, forgot to say the reason I was planning to use 30mm holes was I already had the auger drill bit and with 9inch joists the holes would not be a problem if spaced out every 3 x diamter, i.e. 90mm. Also the wide hole I assumed would help with the threading through. Maybe 30mm is too much and...

Thanks for both replies. A lot of useful information and its much appreciated. I am pleased to know I am not completely barking up the wrong tree which I started to think when the plumber turned down the work. The pipe I have bought - and I didn't buy all I need as I wanted to test it out -...

I wanted to try and get some advice on the best way to pass 15mm plastic pipes through under floorboards. I have plumbed in two manifolds - upstairs & downstairs and need to connect 5 rads to each one. The manifolds are central in the house and most pipe runs will be about 3m upstairs and...

I wanted to know if anyone had experience of connecting the 16x2.25mm Mepla pipe to radiators. I think I've got a couple of options: 1) Bring the Mepla pipe up through the floorboards and connect to the radiator valve via part number 601.555.00.5 (1/2in female). Both the valve and the...

Hi Rick, Thanks for your reply and all the info. Now the summer is here I have the central heating off and will be getting the parts in the next few weeks. Hope your installation is going well. If you have any further tips after you have finished they would be much appretited. Cheers scott

Hey Rickety, I am planning to do a project almost exactly the same as you and am looking at the Geberit Mepla system. I hope you don’t mind if I ask a few questions or add a few bits of info: 1) Have you made any decisions on pipe sizes? I was thinking of 26mm and 16mm but am wondering...

Thanks for the replies. Yes it is brittle and would probably fall apart if the boards weren't there. But seems to me it's done well over the last 95 years. What I was looking into is whether I would need the required 50mm air gap between the insulation and the underlay. The insulation...

Hello, I am looking into insulating a pitched roof in a house built around 1915 - 1920. The roof is in good conditon and water tight with tiles, batons, underlay, board then rafters. No signs of leaks and no damp or rotten boards. The underlay is about 5mm thick and made of a fine straw or...