Adrock

Nothing at all. It's brilliant from that perspective. It's more about the hollow sound from the plasterboard ceilings within the room.

Heh, I probably should have clarified and started my own thread. I was asking because it's my basement and I'm using MF ceiling.

No floorboards, my ground floor is a reinforced concrete slab. Fixing it up high still as effective? I suppose it is the same as walls and the drum effect I've read about.

Very is good enough for me. Just need to spend more and get covered in horrible fibres again.

Sorry to hijack the thread, I'll be doing a few MF ceilings in a few weeks. How effective is the ceiling acoustic insulation?

It's, unfortunately, the industry we work in. All the years I was on the tools and then project managing I got known as the perfectionist on the firm. In my humble opinion I was just doing things as shown on the drawing. And that was in healthcare as well.

Sorry, I failed to explain myself properly. I'm thinking 2 x MVHR due to the way the works are being carried out. It'll mean I'll be able to have one in operation relatively soon whilst the other can be an addition if I ever get to refurbishing the upstairs and doing a loft conversion, it currently feels like a long long while away. Is there any reason why I couldn't combine 2no. exhaust into 1no. wall outlet and the same for the supply air? Might even get a fancy plenum made up.

I'm in Hertfordshire. But in true self build style, it'd be nice if there were a way of doing some interim self testing to make sure nothing is being missed.

Slightly off topic, but can anyone point me to a resource on airtightness testing? As for the MVHR, the domestic market doesn't have a big selection of ceiling mounted. I have a decent 350-400 void in the basement I could have maybe used. Any reason why I couldn't combine the intake and exhaust outlets at the external wall position to prevent two sets of two ducts through the walls?

My dilemma is half of the house won't be ready to install the MVHR system into for at least two years, this is a long term project. I don't suspect a company will be willing to come and install piecemeal. Which is why I was clear in my initial correspondence, the quote seems like a rough and ready count and budget thrown together to get me off their backs after I chased for a response.

That's an interesting article, thanks.

Cheers @JohnMo, I'll give that a read. I'm going to have a play with my house plans over the next few days and I'll try to remember to share the drawings. All opinions and input is valued, it's why I keep coming back with my problems. Just imagine if architects could actually have these kinds of details as standard.

I've almost certainly gone too far down the airtight rabbit hole to consider trickle vents now, I have two new windows and a door installed which don't have them. MVHR is going to be the answer. After that quote I think I'll definitely be doing it DIY though, like almost everything else in the house. Time to build a bill of quantities and spend some money.

Materials are £10k and install £6k, the house will be just over 200m2 across four levels one day. Plenty of work to get there though.

It's a shame I'm living in the bloody thing, I'd love to be able to use aerobarrier I'm going to have to try and do it on a floor by floor basis, I think. Once the basement is done I'll move onto the ground floor and strip it all back, that might provide an opportunity to do what I can do, test and then if needed, get aerobarrier in to do their magic.