Disadvantages to Whitewool cavity wall insulation, it should never have been approved.

Disadvantages to cavity wall insulation.

Once again, we have a property with internal dampness due to cavity wall insulation acting as a bridge within the cavity. This not only poses a problem in terms of damage to internal decorations but also makes the property less energy efficient than if it had no cavity wall insulation in the cavity.

[kevinallen]

I've been a builder for over 30 yrs and this type of insulation should be banned I would never have it on my property cause's more problems than solves. Good video to highlight it

[Matt.ffgmatHexPulseChain]

It should be some water proof material like modern houses, cavity with celotex . In old houses where cavity is empty, I will not suggest to leave them empty, have look now on heating cost . In my house I stick on all external walls celotex 20-25mm and plasterboards on top( I use strong foam glue to bond them together)
It’s huge difference. But must have Mvhr system, only on top floor is fine, very easy and cheap to do . Amazing results, humidity drops and nice and fresh air.
I am thinking about next step, my cavity is 70mm I in my opinion is good to inject liquid foam, very similar to foam which is used on loft roof spray, but closed cell, completely water proof.
In the next 10-20 years all houses will running on heat pump, that’s why we should slowly improve our houses to reduce heat loss.

[alpachino]

I wish I had your skill and knowledge...

[arekarek]

Maybe British people will have a look at how properly insulate houses in Europe.

[Yotta_Flops]

Are you going to post a video of the removal of whitewool and the brick work repair?

[frankwilkinson]

Good video. As a victim this needs more publicity especially on coastal areas. Amazing that lots of firms that use this stuff also advertise that they also remove cavity insulation.

[stephenbetley]

What are your thoughts on injected foam for a hard to fill cavity on a early 1900s end terrace? Inner brick leaf is good and vertical, outer Accrington brick has a curve so the 50mm cavity goes from 25mm to 75mm. Wool / fibre obviously out of the question. Already stripped the inner wall to the brickwork & cleaned it. Waterproof later, pointing touch up, then 40mm Kingspan/Ecotherm next.

[ianarmitage]

I've got this rubbish in my house noticed it when I was replacing a airbrick, it had all dropped down, and was soaking wet . Can it be removed?

[paulcollin]

I've been a carpenter for 4 generations and the cavity should be left open to breath not filled up with rubbish

[alanyoung]

Good video on the potential perils of filling your cavity, especially in an exposed location and/or to walls facing the prevailing winds. It pays to be (very) skeptical when dealing with sales people as they do not have your interests at heart. Always seek independent impartial advice, ideally from a professional.

[cnemqxf]

ive always thought cavity insulation would be a problem with damp penetrating internally. i think instead of building a 100mm cavity filled with insulation i would rather have a 50mm empty cavity and then 50mm insulated plasterboard inside

[sylviadugdale]

This really needs aired on mainstream consumer programmes looks like that will be a tough removal job are you doing a video on it?

[lilol]

Bc of your videos we settled with eps and impregnated wall, were going for whitewool before, think this is the better decision.

[TruthFound]

I've just had mine removed with four attempts because they can never fully remove it I only discovered it because I installed two new window holes

[metamorphosis]

cavity wall insulation should be forbidden altogether

[Malainor]

Outch ya i had to do alot of digging, for my insulation plan. Main thing that keep popping up was never ever hinder the air pocket.
To see the reason in a example is scarry.
Your can reduce the size but never ever fill it have to have distans plates so i cant be filled to from what i seen.
Air pocket acculy does insulate a bit depenent on air flow (low).

[Theoldbricklayer]

Great video, The amount of calls I get saying my house needs repointing I go there and it’s the same issue as what you are resolving. And the amount of people that still think repointing will solve the issue 😂

[JenandJohn]

Hi can I ask what the average cost to remove white wool would be? Ian

[davidbarnett]

It is ridiculous all this mass fill cavity now 150mm crazy
I've been laying bricks now for 35yrs and in my opinion best was 65mm empty cavity can't beat it no damp problems nice air flow and not cold either

[CCCP]

Cavity-walls must NOT be bridged with insulation(insulation touching the outer walls inside the cavity-wall); or else moisture will transmit from the damp outer wall, through the touching bridging insulation, and into the inner wall; making the inner wall damp inside the building.
Injecting foam into the cavity-walls stops the property from breathiing: resulting in drastic condensation saturation of the inner-walls inside the property.
Cavity-walls that are already built up can NOT have cavity-wall insulation added.

Cavity-wall insulation batts(panels) can ONLY be installed from the very start of construction of the cavity-walls.
If cavity-wall insulation is to be used, there must be a large air space gap in-between the face of the cavity-wall insulation batts and the outer wall inside the cavity-wall; this includes an air space gap in-between the face of the cavity-wall insulation batts and the cavity-wall tie drip-points(which must point downwards in the centre of the cavity).
Cavity-wall insulation batts must touch ONLY the inner-walls inside the cavity-walls (of course touching the cavity-wall-ties and retaining-clips also).
Ask City & Guilds N.V.Q. (S.V.Q.) BRICKWORK teachers for PROOF of this.