Chris Miles

Thanks. I understand the concerns regarding the condensation. We already have a step up onto the balcony to accommodate the thermal PIR in the roof void so have very little to play with above teh joists. We could use tapered insulation on top of the joists but I'm trying to avoid that because it will be less insulation and there will be no distance between teh cill and the deck. Yes, we did a review and he picked it up but the Principle Designer argued it was acceptable and BC didn't come back to us. We should have confirmed it was accepted at that point but we didn't (its a self build so we are a little naïve)

The SE has conducted a condensation assessment which says it will be fine with the vented void but the BC won't accept it because he says its not vented (ie teh ventilation won't be effective)

Hi, I'm looking for any advice on how to get over the issue i have with Building Control (who are also inspecting for the warranty provider) on the above detail. We have a built up cold flat roof which forms a balcony from the main bedroom. It has two full height walls at either end and the bedroom door/window on the back wall. There is a glass balustrade on the 'open' face. In effect the flat roof has 4 walls surrounding it, the lowest of which is 1100mm high (the balustrade) the others are full height to the roof. Building control will not accept that ventilation running the full width of the end walls (approx 1500mm) inside the balcony will not vent the voids between the joists. See detail supplied by the vent company I'm now very desparate because this is holding up completion so any help this forum can provide would be gratefully received

Thanks. Seems to be the view of everyone except Wunda…

Beam and block floor so far. Design is to add 150mm PIR then 75mm screed.

Hi,We are partway through a new build house and I’m really struggling to find definitive guidance on wether to install my UFH pipes embedded in the screed (we need approx 70mm) or on top in an insulated board such as Wunda rapid response system. It makes sense that the over screed option has quicker response times but I’m being told it’s less efficient, which I can also partly understand. Likely there isn’t a straightforward answer (it nearly always (“depends on…”) but the guidance I’m getting seems to be very different and from an entrenched perspective.

Hi all, I’m budgeting for a new build but trying to trim some costs. The design guide requires Staffordshire blue clay tiles but there are numerous local buildings have slate. I’m told the clay tiles are expensive so I’m looking at changing to slate if I can persuade the LPA. Has anyone conducted a similar comparison that they’d be willing to share ?