Marko

Have most people here who installed their own systems also handled the commissioning themselves? I'm almost finished running the last few ducts and am starting to think about the next steps. My main question is about measuring the flow rate. If I can get my hands on an anemometer, do I simply divide the total flow rate by the number of intake or exhaust valves to calculate the flow per valve?

Thanks Mike 👍

I've gone through the BPCV instructions, and I can't find anything that specifically says whether the 75mm ducting needs insulation in a cold loft. I'm assuming it doesn't as long as you can place the ducts under the loft insulation. Can anyone confirm this? TIA

I've got the unit on the wall and had the roofers out to install the vent tiles. BPC just sent me their instructions and after reading through it I noticed they recommend that: 'roof vents must be installed at a higher level than the MVHR unit or condensation will form in the pipework' My intake vent is a lot lower than the unit. Is this critical before I get the roofers back out 🫣

I've just had the roof tile vents installed and going to start connecting the unit up. What has everyone used to make the connection from the spigot/adaptor on the vent tile to the PVC ducting from the unit? Presumably some sort of flexible connection to allow for the pitch of the roof?

Great, I’ve had a ‘preliminary’ design layout sent over that does give flow rates and basic intake and extract locations. They then say that they can provide full ventilation guide with more detailed information such as duct runs etc. No mention if it is deductible from total cost though. Just wondering if it’s worth paying the extra in the grand scheme of things.

Has anyone who done a DIY install had BPC Ventilation design their system, and would you recommend paying the extra £100 for it?

Thanks. I should have really mentioned that I’m running an ASHP so temps are pretty low - mid 30’s.

I have a very, very small bathroom with an existing rad in it. I'm going to be ripping the bathroom out soon and wondering if it's possible to connect the UFH flow and return to the existing pipes; or, is that too simple and I'd need a proper manifold setup?

I like the idea! So something like the below. Slabs against the OSB with DPC in between. Do you think the slabs would need fixing with some type of adhesive on the sheathing?

Can you elaborate, I'm slow today. What do you mean, cut some extra slabs 150 mm and turn them on their edge?

So I'm in the planning stages. My intentions were to pour a slab and timber frame the walls. I'm especially limited in terms of width so not much wiggle room. The garden is on two levels and there will be steps leading up to the house. These will go right alongside the outbuilding wall with a gap between where I'll be putting in some Aco drains. As you can see, I've run into a design issue. Once the steps go in, there be no access to the side of the building for maintenance on the cladding etc. Does anyone have any suggestions to get around this? I was thinking of a type of brick plinth around the timber frame, up to the height of the top paving slab, but not sure.

How on earth do I cut and scribe a 77mm thick worktop?

Did you get retrospective permission?

That's why I was bemused by the letter. I'm not going to second guess them though. Like Joe said, I'm keeping the letter just incase anything is brought up in the future. Best thing about it is I get my application fee back 😁 Go toward some more PIR boards. Not that it'll stretch that far with the prices these days!