renovator

Thanks John - when you mean used in pairs can you elaborate? Looks like the BSK has IR and Wifi but ever to slightly louder: dba at 3M: (10/18/26) vs (11/19/27) Second question for the lounge / open plan kitchen: Will two of the BSK or Brookvent meet Part F or will one Prana 160 be sufficient? Total area is ~39SQM. Thanks!

Anyone have any views?

Hi All, So I've been reading up on single room MVHR systems for a renovation and extension and have decided the following, but wanted some feedback: Current kitchen which will turn into a utility room (3M2): BSK single room MVHR https://www.bpcventilation.com/bsk-zephyr-single-room-heat-recovery-unit#accordion OR: Brookvent https://brookvent.co.uk/product/aircycle-one-heat-recovery-ventilation/?attribute_model-type=aircycle+ONE+100mm&gclid=CjwKCAiA9ourBhAVEiwA3L5RFsRvLKJZyJIA4ZR3gmahafMMbTbu96ibDdKDjs1hWNp0IvgjLYA7fhoCmzIQAvD_BwE New open plan lounge (6M x 6.5M): I'm not sure if the flow rate capacity of the BSK can meet the demands for open area lounge, so I was thinking the PRANA 160 Pro: https://ecostream.org.uk/prana-160-erp-pro/ Question for the lounge is can I use one of the cheaper units for the open plan lounge? Also, has anyone come across Brookvent? Thanks for your time.

Thanks Conor, I've attached the drawing for the extension which is a full width (7.2M (5.8M floor space) x 3.5M). This part of the extension will have 150MM whereas the original part of the house (before the nibs) which has the 50MM polystyrene, 20MM chipboard and 15MM flooring accounts for roughly 31 SQM (including Utility, WC and Hallway). So total 'material' depth above current slab is around 90MM.

Hi All So I've posted a few topics on the extension I'm having regarding UFH. So far, I've originally specced a Wunda EPS400 SYSTEM covering 52SQM across both the original part of the house and the new extension. This was on the assumption that beneath the current floor (15mm engineered oak), there was a thin ply board on top of the existing slab. The builder has removed the flooring to find there's the following: 20mm plyboard 50MM of polystyrene insulation which sits on the existing slab (picture attached) Approximately 90MM of depth to line up with new extension slab, although this can go to 120MM potentially. There are two options or more if you advise: Remove the rest of it to expose slab, add 50mm celotex xr4000, membrane then Wunda EPS400 Remove existing insulation, install 50mm celotex, membrane then UFH screed. I'm sure there will be better suggestions and thanks for your input in advance. Ultimately the outcome is to have an UFH system which now it seems the existing slab may not need to be dug out due to the level of the new slab which is yet to go in.

Thanks Dave So, 1. Remove utility room loop and have the kitchen loop (1-5) go through it. 2. Remove zones: can I still control the temperature separately for the kitchen / open plan living by having just 1 zone? Thanks

Thanks Dave, When you mean get rid of Zones, do you mean the thermostats?

Thanks for the reply John There will be 150MM insulation in the new extension and 100MM across the rest of the floor. We will be using the 20MM Wunda lo-profile boards that will sit on top and then a further self levelling screed above.

Hey Everyone, So I'm a few weeks out from the renovation / extension and wanted to get your thoughts on the draft UFH plan which I've attached within. Couple of key points: Kitchen / Living zone will be serviced by RS3 thermostat with a total of 3 loops The proposed location for the manifold is in the utility room - at the moment, the boiler will be will sit directly behind the gas meter but I'm considering moving the boiler into the garage. This will cost quite a bit more but I wanted to get your thoughts on this and if it's worthwhile spending the extra to move the boiler. If I do this, do I still leave the Utility room as the location for the manifold? Currently, the hallway and WC are on the same loop - I've asked Wunda about the WC getting a little too hot if the Hallway is running at temperature and they advised it'll be fine. Thoughts? Thanks again for your help and feel free to make suggestions.

Hey Jimbo - unfortunately, due to the new regs (Summer of 2022), you need to have additional ventilation if the existing flow from the trickle vents are removed (it needs to provide the same amount of ventilation as what exists at the moment). The main question I have here is do I need to have individual room vents for the bedrooms, or will one PIV suffice (having looked at the airflow requirements, this seems above the requirement for Part F). For the ground floor, same query above which is do I need a compact ventilation unit in the lounge / kitchen and utility room? Thanks!

anyone have any views particularly from a building regs POV? House was built in 1999/2000. Thanks

Hi All! So I needed some guidance on renovating and extending my mum's 3 Bed house and wanted some advice on a few things: All windows and doors are Internorm HF410 with no trickle vents so we need to provide appropriate 'background ventilation' so I've done some research and found a couple of ways this can be done. I wanted your views on which is most cost effective based on the plan I've attached and also any other suggestions. For the first floor (3 Bedrooms, 1 bathroom, 1 Ensuite), I was thinking of a PIV ducted from the ceiling into the hallway. Do I need to route this into each bedroom or will one duct suffice? Total floor space is ~45SQM of which ~29SQM is bedroom floor space. For the ground floor, there will be an open plan living space measuring circa 39SQM with total space at ~52SQM. As above, none of the windows or doors have trickle vents, so do I need another PIV on the ground floor (to ventilate the open plan space and utility room?), or will one unit be ok to provide ventilation throughout? In terms of PIV, I was thinking of Vent AXIA Pure Air, or should I go down the route of MHVR, something like the Recuperator PRANA 160 ERP PRO. Thank you!

Thanks John, I've been checking with the builder to see how we can reduce heat loss by increasing insulation significantly in the new extension. So it will be 200MM insulation in the new 3.5M extension and have potentially one additional radiator in the hallway. Thoughts?

HI All! So I'm about to embark on renovating and extending my mum's 2001 3 Bed detached property. I've attached the architect's floor plan which is effectively a full width rear single story extension and re-adjustment of interior walls to create a larger hallway and open plan living. I've researched into UFH vendors and approaches to reduce the amount of heat loss in the property and have a few questions: 1. The existing slab is believed to have 75MM of insulation underneath. I'm considering a low profile wet system to sit above but wanted to check to see if I should add something a Kingspan Optim-R (25mm) followed by the UFH system? 2. I've had a quote from two providers for supply only; Wunda EPS400 (3 zones, 5 port manifold covering ~51SQM): £2,441) | Nu-Heat were more than double the Wunda quote. 3. Final question is what labour would I need to approximately pay to install the UFH system? Any thoughts on the above so far and should I also obtain a quote from https://www.outsourcedenergy.co.uk/shop/ as they seem to be recommended by a few on this forum. I really appreciate your advice on this. Thanks!

Hey! I need some advice on parts of the renovation, including: UFH: I've researched into a few companies but wanted to ask about insulation, zoning and what components the providers have included within the quote. PIV: I've opted to go with a PIV to provide ventilation in the property and also remove the need for trickle vents. I wanted to ask about making this system effective and what I should be considering when the builders starts Think they are the two main points for now. Building work starts in 5-6 weeks and there will be other topics I'd be keen to get the forum's perspectives on. Many thanks