Insulation
What’s the modern take on the advised types of insulation (retro fitted) for cavity walls, loft and floor?
Interested to hear ideas on materials and methods etc.
Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
There are so many and for some many different parts of the home. I have cavity wall house but have been advised not to fill the cavity as due to the location (literally 50 metres from the coast and exposed to the elements, my architect said it would cause damness and cold bridging if i filled it. Ive gone with a complete internal wall of insulation built on the inside of all my external wall around the house. I suspect that will give me rally good insulation. I’m most likely be using kingspan insulation with underfloor as well. triple glazing where it makes sense and new doors. I then plan on using a heat imager to ensure i address any leaks/drafts. I think that way if i minimise the loss of heat it means i dont need to keep topping it up to a comfortable level
@boblochinver. For my walls I’m thinking Blown Bead Insulation. I’ve no experience of it but it looks like it could overcome your issue and be worth a coat of looking at. Not possible to post a link but a company called Pro-Point UK specialise. There will be others I’m sure but their site explains the principle quite well I think. Happy to hear of anybody's experiences.
Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
@morgan I had a look at that wall cavity bead thing and it actually look pretty damn good, i think i need to investigate that further as i was about to apply a lot of internal insulation for the whole house but if i get the Same effect with actually filling the cavity then that might be a result for me as it would literally take weeks to do the entire inside of the house with new insulation walls. What i like is it says it doesnt bridge the water . I need to look into it further ……
Never heard of it, and was just on the blown site: http://www.nbba.org.uk/index.html
Looks super interesting. I think the problem, for us, is that previous owners already filled the cavity with insulation - I just don’t know how good it is, and we won’t be able to “top up”. But their case studies sound great.
Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
Follow our sustainability journey at My Home Farm: https://myhomefarm.co.uk
sometimes the internet can be the best of places and the worst of places, As I research further the blown bead insulation on some sites it promises to be the best thing since sliced bed or the Sinclair ZX Spectrum Computer, and on other sites its the worst option and doesn't do what it says on the tin and creates cold damn areas. I. continue to do my research. It would be easy to just fill the cavity and I have no doubt that it will make the house warmer but im thinking having my current cavity air barrier does have its plus points and doing internal full wall insulation will absolutely make the rooms warmer. I'm of the logic if I install cavity insulation and it goes wrong or causes underlying issues such as damn etc then its difficult to rectify, but fitting internal insulation on the walls will always be a positive.
Hi Everyone,
We had blown bead cavity wall insulation installed quite a few years ago and for us it was an even better investment than solar panels.
I think at the time it cost in the order of £250 to £275, and I estimate that the payback time was no more than a year.
The whole process was completed in less than a day, with minimal fuss and mess. They just drilled holes, at set distances, in the outside wall, and then blew the beads inside. The hole is then filled with mortar which is hardly noticeable.
Hope this helps.
did you get a thermal image before and after pictures ? just to see if it completely filled it all. I am still considering that but think there is more benefit for me with he internal insulation.
Hi Bob,
We did not get a thermal image taken before.
I borrowed a thermal imaging camera the other year and carried out a survey and could see no problems with any of the walls. As expected the main heat loss was from the windows.
From what I can remember the beads are really quite small, so fill all the nooks and crannies.
Hope this helps.
I took a completely different approach - thinking about us humans, when its cold we put on a jacket - took the same principle. Our house is wrapped with a nice 5 cm of hard - fire retardant polystyrene insulation, though its not enough as recommendations are 8-10 cm but that would have required us to extend the roof overhangs so we thought we would go slow on it. So far it has worked well - our energy rating from "D" got promoted to "A+".
Exterior? I can only find interior via Google.
Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
- 24 Forums
- 1,413 Topics
- 29.7 K Posts
- 40 Online
- 1,198 Members
Join Us!
Latest Posts
-
RE: ASHP Advice: High Temperature vs. Low Temperature Heat Pump For Microbore
@jamespa I fully agree with James that a HT heat pump...
By Derek M , 28 mins ago
-
RE: Installing your own ASHP - DIY
@tomasmcguinness Have you been able to perform any sani...
By IanMK13 , 4 hours ago
-
All heat pumps will hit the point where their minimum o...
By HarriUp , 5 hours ago
-
-
RE: Viessmann Vitocal 250-A in the UK
For reference, I have a 10 kWh Viessmann 151-A installe...
By GC61 , 6 hours ago
-
RE: Vaillant Arotherm Settings for New Installation
@drew-pa Ah thanks. Good to know I dont have a misconce...
By bontwoody , 7 hours ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
On the whole marketing claims vs reality on performance...
By GunboatDiplomat , 7 hours ago
-
RE: Gas Combi to ASHP - Making sense of survey results and proposal.
@harriup If the radiators need to be twice the size t...
By IRMartini , 7 hours ago
-
RE: Microbore Central Heating Plumbing, will it be a barrier / pain?
@mattc All the existing (designed for T50) radiators ar...
By IanMK13 , 22 hours ago
-
The temporary fix has reconnected about 60% of users, a...
By Abernyte , 23 hours ago
-
RE: What is Wrong with our Heat Pump Installation?
Having to run the heat pump during the summer for DHW s...
By Toodles , 1 day ago
-
Issues with Vaillant connectivity via the MyCONNECT gateway
I'm sensing a variety of issues with Vaillant connectiv...
By dr_dongle , 1 day ago
-
Interesting heat pumps installations
Thought it would be cool to share photos of interesting...
By Mars , 1 day ago
-
RE: Say hello and introduce yourself
@Toodles That's very interesting to hear, thanks. I ha...
By dr_dongle , 1 day ago
-
RE: Massive Electricity Cost for Running My Air Source Heat Pump
@allyfish In fairness installer has replied stra...
By Holts , 1 day ago
-
-
RE: Are Solar Diverters Necessary for Homes with ASHPs and Solar PV?
@zzxap19 that's a fair point. With the eddi, is it poss...
By Mars , 2 days ago
-
RE: Delivering a smart and secure electricity system: government consultation
"I don't think I'll need to refer to past iterations of...
By eggnchips , 3 days ago
-
RE: Error on Immersun – Error 8 Load Short Circuit
@julesmp8 fingers crossed. I have to say our Immersu...
By Mars , 3 days ago
-
Latest Topics
-
Interesting heat pumps installations
By Mars 1 day ago
-
What is Wrong with our Heat Pump Installation?
By Mars 2 days ago
-
Fossil Fuel Fired Heating v Heat Pump?
By Toodles 2 days ago
-
Viessmann Vitocal 250-A in the UK
By treehugger 4 days ago
-
By HUBB84 6 days ago
-
By jswhite 6 days ago