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Hi Anyone got any tips for laying our 20mm PE-RT underfloor heating pipes into aluminium spreader plates (200 mm centres)? Specifically I'm after advice on how to get the pipe to be more flexible. The pipe is really stiff and very difficult to get it to fit around the bends. I'm going to try...

Thanks for the info and advice. I've opted for the 18 mm hardwood structural ply from Travis Perkins. I guess I'll just have to duck that extra 3 mm!

Yes, that's a good point. But every mm counts, and I didn't want to just waste 3 mm if i can use 15mm rather than 18mm.

The joists spans are around 3 - 3.2 m. We've added solid strutting between joists, not sistered the joists. Almost everywhere I've read talks about 18 mm ply or chipboard for standard subfloor over joists. However, if 18 mm chipboard is regarded as sufficient, and hardwood ply is stronger than...

hi, I'm trying to find out what the minimum sensible thickness of plywood i can use to lay over our joists. Its an old house and the joists centres vary from 380 - 400 (most less than 400). The joists are 45mm x 160mm, and there are noggins dotted around the place. Most joists are pretty stable...

Thanks. I'll try to find the thinnest foam/underlay i can and stick that between the joists and final floor. The heat spreader plates will also be placed and fixed between the joists and final floor. Do you think the foam should be above or below the spreader plates? I plan to fill the joist...

Hi Our house has low ceilings on the first floor. The max joist (top of joist) to ceiling height is about 2100 mm. We're putting new floors, so I'm wondering what the best options are for flooring without losing any more ceiling height. The flooring has to work with UFH with spreader plates...

I did think about doing it myself, but I've tried plastering before and vowed never to try again. The area we've got to cover is about 60m2.

Hi Spudgun, I'm still trying to organise it, but I'm almost certainly going to use Diathonite Evolution to insulate. Hoping to start this part of the work in July. I've chosen this over Bauwer Light because Diathonite is lime based and has a higher insulation factor. It is more expensive though.

Thanks Kaymo, that's really helpful. I've already contacted both Bauwer and Ecological building systems and had quotes from both. You're correct, the bauwer light render works out quite a bit cheaper but provides less insulation on paper. Having said that, I've read some posts on the...

hi kaymo, I'm in a similar situation. What product did you end up choosing?

That certainly would help. At the moment I'm trying to decide whats best between PIR plasterboard, or insulating render (http://bauwer.co.uk/). The render i like because it'll stabilise the old brickwork and is breathable, but the PIR boards have a slightly better insulating value.

Back to my original post.... The heat loss calculation shows that for UFH will struggle to get enough heat into the bedrooms. I've run the same calculation but using radiators (oversized for low flow temps), and there's no problem at all with getting enough warmth into the house. I'm wondering...

Not planning on installing a Daiken, but "great when they work, a bugger when they stop" is true for anything. A knackered gas boiler is just as rubbish as a knackered ASHP. modern ASHP can extract energy from air down to -20 *C. The one we've been looking at is still relatively efficient at...

Thanks, I'll look into the cost of triple glazed windows. 0.9 for the walls is not a typo. The U value for solid brick walls is apparently 2.15 and upwards. Adding 50mm of insulating render on the internal face of the walls (we are not adding anything to the external) gives the walls a U value...

Thanks. I guess that might help a bit but 2 of the bedrooms don't have any south facing walls. We already have quite large windows on the south side and we'll be blocking up drafty holes during the renovations.

Thanks guys. Not what i was hoping to hear, but helpful. The calculations are based on outside temp of -1.8. Not sure where else we can improve the insulation. The roof is being insulated to 0.18 U value and the windows double glazed to 1.4 U. The walls are currently solid brick walls and I'm...

Have started renovating our house. We will be removing our LPG gas tank and ancient boiler to be replaced with an Air Source Heat Pump. As part of the renovations we'll be adding insulation in the roof, floors, walls, and doubling glazing windows. The company installing the ASHP have run a heat...

Well, i managed to get the old damaged olive off (the pipe got slightly stretched). I fitted a new olive with plenty of PTFE tape (on the pipe, on the olive, behind the olive and on the male thread), plus i used a fair old amount of LS-X sealant. Did it all up, waited for about 6 hrs, turned the...

just checked the video on how the monument olive puller works and that should be ok, so i'll go and pick one of those up.