Oz07

I dont think anyone looking at a house in future would be put off with a2a. So should suit op?

It must be volume production economics. I remember people saying how simple mvhr units are inside.

What did you pay for your bare units? What do they rrp for?

How much is a mvhr unit alone to service 150m2 vs a boiler to do the same? What would a boiler be 1000 or less?

It does sound like a bells and whistles job. I dare say the house is worth over a million quid though pretty high spec. Mine will deffo be diy, last one was. I won't be having the plaster in vents.

I also want dry autumn. I want to get a backhoe in to clear our site after a planning decision. Scheduled October atm

Crazy my place will be half the size i wasn't hoping to spend near 5k on mvhr. How are these things dearer than boilers

I don't think they are I've built without them in past. Once i got asked to put them in because of potential methane.

I'd take it with a grain of salt. By all means do what you need to get the site sorted before it gets too bad but don't panic.

Why is all the soil pipework UG? Suppose it doesn't matter anyway

Braver man than me. Still if it's not given you any problems yet. That invisible one is shit.

No you buy thru merchant but they still do takeoff

Thats what I do.

I can never access that web archive site. Anyway I'm sure it was mentioned on here. What was his username?

Cool. What do you have 2 holes through the wall and they just connect into these? Neat solution. I went through roof tiles at my last place. How did you get on with your SAP with the titon units did you buy these before the design stage or did you change your as built SAP to allow for them?

Didn't Jeremy install aircon with a similar wall make up? You could search his threads i don't even remember his user name.

Evenings i used to set mine to come on.

But does it in the real world. Every job i see they seem to put the flashing in after. If dpc is on brick below is it actually going in underneath

Never heard of them. Are they limited to smaller systems? Why do you have 2 units?

With the mvhr you do need to get the 5 or 6" supply and extract pipes to an external wall and around 2m apart. Plus all your ducting. So its not quite as easy as popping in a cupboard. I'm not trying to be pedantic its just these do take up a bit more room once you allow for connections. Have to be strategically placed too.

Got me thinking how does a flashing interact with a dpc tray? By grinding a lead flashing into a course are you not sending water behind it if running off a doc tray?

Yeh don't worry I've never seen it done either. Its one of those textbook things which should be done but never is in practice.

Not many small subbies will have a rams but in the days of AI I suppose its easy enough to knock one up.

If it gets as far as that joint its out the building though isn’t it? In reality I think you will leave the blockwork out at doorways so the radon / dpm will turn up the inside face of the brickwork.

Ive never had 106 before just an email from local BCO saying in his experience local clay ground unsuitable for soakaway. Severn Trent accepted this. I think my conc was about 900 below ffl. Then 3 course block and 3 brick. For drainage and block and beam flooring etc