Same, I eventually found some details on a user forum!!Good point Leo, I did find it hard to find consumption stats for the Tapo P110's that I have, found them for US-type plugs easily enough but not UK-type.
| Insulation type | Costs | Energy bill savings (£/year) | CO2 savings (kgCO2/year) | Payback (years) |
| Pipes & Water Tank | £38 | £226 | 715 | 0.2 |
| Loft | £930 | £270 | 620 | 3.4 |
| Cavity wall (270mm) | £2,700 | £280 | 650 | 9.6 |
| Solid wall (internal) | £7,500 | £380 | 880 | 19.7 |
| Solid wall (external) | £12,000 | £380 | 880 | 31.6 |
| Doors | £840 – £4,325 | £45 | - | 44.4 |
| Floor (suspended timber) | £4,700 | £80 | 185 | 58.8 |
| Windows | < £15,000 | £165 | 375 | 84.8 |
Also agree. for most people, if you have the money, Solar is a no brainer! Payback period is 5-7 years.I'd suggest that solar power be put on the agenda.
I've seen this type of table before and am constantly amazed that probably THE number one heat loss issue and lowest hanging fruit in most houses in our mild (and getting milder) climate is consistently ignored i.e. air tightness or more to the point, the lack of it. There is absolutely no point in improving the insulation values of floors, walls, windows/doors or ceilings/roofs if the heated air is easily escaping and bypassing these insulation layers whether a wind blows or not. Not taking air tightness seriously is resulting in disappointing outcomes for the homeowner and will continue to.If you just want to overall improve house comfort and running costs I would recommend going in order of payback
The info below is from the website https://www.greenmatch.co.uk/insulation
The pricing numbers might be a little out, as are the payback periods, but the order is pretty much correct.
Insulation type Costs Energy bill savings (£/year) CO2 savings (kgCO2/year) Payback (years) Pipes & Water Tank £38 £226 715 0.2 Loft £930 £270 620 3.4 Cavity wall (270mm) £2,700 £280 650 9.6 Solid wall (internal) £7,500 £380 880 19.7 Solid wall (external) £12,000 £380 880 31.6 Doors £840 – £4,325 £45 - 44.4 Floor (suspended timber) £4,700 £80 185 58.8 Windows < £15,000 £165 375 84.8
There is a register for BER assessors and lots of them are also qualified to do energy assessments. In fact its worthwhile doing so even with one stop shop as you'll get an outside view from someone who is not trying to sell you anything. There is a list on the SEAI website.I would rather not use a one-stop shop. Would like to pay for advice.
On cost, there are two elements material and labour. You'll do a lot with €1000 to €2000 of air tight materials and a perhaps a weeks labour, though many clients decide to tackle the job themselves when they see what and how to address. The real challenge is to find the correct tradesperson who understands what's what.Do you have any rough guide on cost vs pay back period for Airtighness?
A stand alone air tightness test is done generally on new builds, gives a test result, takes an hour or two and that's it. The result is then used to determine compliance with the building regs. This type of test is typically around the €250 mark.There's a Company called Airtightness.ie who will do the air tighness check for you. I see the price is 250 e
Iny my experience and opinion, the energy assessments you refer to are BER based, don't include any detailed air tightness assessment and as a result, in my book, not generally fit for purpose if you want to know what's happening in your house.There is a register for BER assessors and lots of them are also qualified to do energy assessments. In fact its worthwhile doing so even with one stop shop as you'll get an outside view from someone who is not trying to sell you anything. There is a list on the SEAI website.
An air tight barrier needs to be on the warm side of insulation, continuous between different building elements (wall, windows, floors, roofs/ceilings) and the approach taken depends very much on the building type, age, shape etc and whether it is under construction of already existing.I'd also be interested in learning more about air tightness, such as who will check the house for you, what are the more practical improvements that can be made, and idea of costs etc.
Are you referring to ventilation systems perhaps?Re: air tightness: Are you talking about the pipes that collect and distribute the warm air ? I'm shuddering at the thoughts of living/sleeping in a house that is airtight ?