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What’s the modern take on advised types of insulation?

Morgan · 2021-03-09T17:57:02Z

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.

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Derek M

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14/03/2021 6:47 pm

Hi Morgan,

You must be using the wrong google, try 'external wall insulation'.

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NeilSondhi

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14/03/2021 6:59 pm

@morgan something like this:

NEVERPAINTAGAIN.CO.UK "https://www.neverpaintagain.co.uk/blog/exterior-wall-insulation/"

Pros & cons of Exterior insulation for your property. Is it worth it?

As homeowners, we are always looking for ways to improve our properties — be it through better energy efficiency, aesthetic upgrades, or long-term durability. One popular option for improving your home's energy efficiency is exterior wall insulation. While this can offer a variety of benefits, it’s important to understand both the pros and cons before

these days EU has changed the building code and they allow 8 to 10 cm of graphite composite EPS or mineral wool and not Polystyrene based any more, guess due to HBCD concerns. Wish I knew - every day we have new things to learn. Maybe next year there will be another new product to scramble for 😀 .

More details on this link: https://ewistore.co.uk/the-best-type-of-thermal-cladding-for-houses/

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Morgan

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Topic starter 15/03/2021 10:07 am

@neilsondhi. Interesting but I live in a conservation area plus the nature of our house doesn’t lend itself to this. Cavity wall insulation for me.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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NeilSondhi

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15/03/2021 10:20 am

@morgan true - that's a bummer, I heard they insulate externally having the top layer same design like brick cladding - its a thin layer of pre fabricated design. Did you try to evaluate this option?

I somehow don't like wall cavity insulation, vapour barrier if not done right can cause havocs - if you decide to take that path then please be careful and ask many questions about vapour barrier choice and external or internal side.

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Morgan

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Topic starter 15/03/2021 10:33 am

@neilsondhi

I haven’t investigated as it really would be pointless. The building itself isn’t physically suited to the concept. It’s an old farm house in a conservation area. Even if it were possible the change to the appearance of the building would make any planning application unacceptable in this area.

The cavity wall insulation I’m looking at is Blown Bead Insulation. I can’t post a link but the company I’m looking at is called Pro Point-UK. Their site explains it and appears to deal with your concerns.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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NeilSondhi

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15/03/2021 10:47 am

@morgan Thanks a lot - I learnt something new today 😀 My logical thoughts go towards air flow - they claim water just drains away through the insulation but I am still not sure how will dampness dry off - its the dampness that causes havoc and that needs to be dealt with to start with.

If I understood it right - it will restrict air flow (insulate) but that is the exact air flow we need to remove or dry off the dampness - ok, perhaps my logical thinking needs to go on vacation 🤣 but this just does not seem right.

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Morgan

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Topic starter 15/03/2021 10:49 am

@neilsondhi

Well I need insulation and your example is unfortunately unacceptable in my situation.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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NeilSondhi

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15/03/2021 10:57 am

@morgan no worries, I am not claiming that my option is the best way..

what I am saying is to take all factors into serious consideration as this is the time to be pro-active rather than being sorry later. Its ok to go for wall cavity insulation - vapour barrier if not done right may lead to more issues, worst case you would be to forced to remove the insulation and many cases completely reconstruct the wall. I just ask to be cautious whenever it comes to wall cavity insulation - I personally hate it and would never be comfortable.

just youtube "wall cavity insulation issues" - it will shock you.

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Derek M

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15/03/2021 11:01 am

Hi Everyone,

For what it is worth, we had blown bead insulation done quite a number of years ago and have not experienced any problems with damp.

Unfortunately I can't remember the name of the company who carried out our installation, but looking at the Pro Point website they look very professional. It would appear that they can also perform blown bead removal, so if there are problems you could always go back to square one.

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Bob@Lochinver

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16/03/2021 11:02 pm

@derek-m Im going back and forth on this, do I just do cavity wall fill with Blown bead or do I leave it and do whole house internal wall insulation. the cost and time for internal wall will be expensive and blown bead could be done in a day !

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Derek M

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