Mulberry View

That's quite cool. Is it an alternative to a crated soakaway or something completely different?

I don't have the crates yet, I didn't realise they'll supply this?!

We've gone for Norrsken Alu-clad windows for the majority of the glazing for our 200m2 build. We're not Passivhaus, but hoping to get near that level of performance (sub 1.0 air-tightness ideally). For those that have them, did you go for the 2 gasket profile (P31a) or the 3 gasket profile (P41a)?

I'm hoping to start digging my 20m3 Soakaway this weekend. I'm going for 6m x 3.6m x 0.84m. 1. Pea Shingle or Sharp Sand to surround the crates? 2. Geotextile wrap for the crates yes, but should I also provide another separation layer between the backfill layer and the surrounding soil? I'm grateful for you guys, so any help here is appreciated as always.

What is the usual process for ascertaining heating need? Does an Underfloor Heating designer take care of this? Or is it down to who specifies the Heat Pump? We have upped the specification of several of our thermal elements (Floor insulation thickness, Roof insulation thickness, Window u-Value and expected Air-tightness to name a few), I think I need to get my original 'as designed' SAP updated to include the changes so I have something upon which the heat loss calcs can be taken from, does this sound like the right approach?

Any further input on this? If I have to add, say, 100mm of material to an opening to reduce it's size, is 150mm of EPS too much to screw through to attach the windows? I could remove the original EPS closer and replace it with timber, before adding the additional EPS over the top, that would give a nice fixing, any implications in this?

Grrrrreat! Well, fingers crossed and we'll find out soon I guess.

I have limited docs from them, but they went from my job onto a multi-million pound project, I'm hoping that adds some weight to the theory that they must have a good insurance in place. I guess we'll know more once they engage with us, which if they do so within our legal timeline, is within the next couple of weeks.

This is what we need to know, I was discussing this with 'er indoors last night. Surely once we have put the insurance company on notice, they have to consider the claim? With car insurance, you don't need to stay with that insurer for the duration of the claim, similar right?

I have had what appear to be 2 decent Zinc installers here. I've learned, however, that they all hate each other and willing throw each other under the bus. Both of these installers claim to be working often on jobs that our installer has either left or c'ocked up. There is a terminal potential issue with the upstand height in our box gutter and, as that was the lowest part of the roof, if it is proven to be defective, the whole of that section of roof (half of the total area) will have to come off.

I do honestly think we'd reconsider the rooflights, but obviously the water is under the bridge. Ours are the sort that drop over the timber upstands too. I meticulously constructed the roof and installed the upstands to the absolute letter of their guidelines and well within the tolerances. It's a shame that all turned to you-know-what when the Zinc roofer arrived. We liked the idea of some sort of stack ventilation, we have an openable rooflight at the high end of the living room and in the double height entrance hall.

Ironically, we are to have MVHR. The opening windows were because we loved large opening rooflights in our last place, they seemed to let a lot of heat escape in the summer. HIndsight is a wonderful thing and if we'd known how much agro they would cause, of course we'd have done without them.

You're exactly right, it's a shower of shit. I know that we should have had Architectural support, but the installer absolutely should have kicked the problems back to me when they were realised. Instead they 'winged it'. Velux have offered some help, but they do not take responsibility. The hinges, if you ask me, are skimpy anyway (and with 3no M5 fixings each) and with windows that weigh 275kg each, they must have a good fixing. Especially because the window has to be pivoted up to vertical in order to fix the final bolt in each hinge, so there'll be 275kg bearing down vertically at that point. It turns out that the Vario by Velux windows run close to the upstands and moving the hinge at all from it's designed position could cause the inner edge of the window to foul the upstand as it opens. Both of the onward installers that viewed the roof say that it's not a straight-forward issue, but both have tabled something that might be able to be developed, well for the rooflight issue at least. But both of course state that I'll screw any warranty I might have on the roof as soon as they start to mess with it.

The issue began as being about the hinges, but more defects have been discovered in the time since. I think the installer has circumvented the compliancy process by not compounding out-of-scope elements. The Zinc manufacturer doesn't care because they only warrant the material, probably not worth anything in the grand scheme. For example, the longer of the 2 roofs is just a smidge under 14 metres. This significantly exceeds VM Zincs maximum tray length. It turns out that they gave special approval for it, but it doesn't look like the installer highlighted to them that, along with the long trays, there are also soldered seams behind the rooflights, which essentially lock the trays together. There is also no expansion tolerance behind the rooflight upstands, so these 3 points combined make for a risky roof. Lots of concern has been shown about the amount of soldering too, which is a big reliability issue. The need for soldering was not presented in advance and, apparently will require frequent inspections. The joined trays make this issue many times worse. How can we effectively monitor soldered joints on a roof that is 7 metres up? There's no way we'd have agreed to this if we had known. There are also possible signs of leakage which need to be investigated. I am tracking at least 2 wet patches which I have evidence of going through a wet/dry/wet/dry cycle.

Thanks @Nickfromwales. You may or may not know that we are estranged rom our original Architect and is probably contributory towards how we've ended up here. However, the Zinc roofer appears to have accepted design responsibility in proceeding to implement their own design to many of the details. I have another Architect on board now, we are trying to fill in the detailing blanks now, but this was not fully known when the roof was instructed. The Zinc installer was very bold in assuring us that they are very qualified to detail our roof, they had plenty to say about how poor Architects details are, but that we should trust them as an accredited installer. We have been trying since September to come up with alternative details to fix the main issue and one has not been presented that meets our needs and satisfies the warranties offered by the roof system and the rooflight manufacturer. I would prefer to reach an agreement with the original installer, but that ship has well-and-truly sailed. It's an ugly mess, but there does appear to be legal hope for us, we just don't know how long and at what cost just yet.