NandM

I've raised the question with our council planning officer and will report back.

Agreed - i've seen some simple setups using a compressor and vacuum gun that also works really quickly. I think you could bodge together one of these vacuum guns with a paint spray machine for the pva and have both hooked up into one outlet.

I had another quote at £4.9K and just as I was about to give up on using an installer, I had an Ecobead Platinum approved installer quote me £2.4K. I haven't thought about warranty - would this be applicable to an extension? I have found someone selling almost 20m3 (I need 28m3) of grey beads for just under £300, but delivery doubles that to £600. If I add to that a half-decent setup for the installation, then financially I'm looking at under a grand to do two-thirds of what I need. Which made a lot of sense with the previous quotes I had, but still tempting with the lower quote....plus storage would be a nightmare.

So I've had around three quotes so far for blown-in EPS (150sqm of wall @ 200mm cavity) and they are all within the £4K - £4.5K range...this is much more than I thought it would be given some of the historic quotes on this forums (2021/2022). Which brings me to the question of using non-"branded"/BBA/KIWA certified EPS beads and going down the DIY route as per the other thread. Would there be any push back from building control if I was to use beads without a certificate?

@jayc89 - how did you end up using and how much did it cost in the end?

I've just had an email from warmcell also advising not to use it. So EPS it is then

After reading the DIY blown-in EPS beads thread, I started looking into DIY blown-in cellulose. I was/am planning to use it for the cavity walls and also flat/pitches roofs....but: 1) I've had a very helpful chap (Jasper) over at X-Floc tell me that cellulose is not suitable for brick/block cavity as "There is too much of a risk of interstitial condensation and risk of water penetration from the outer layer." When I asked for more information, he said " When it is a timber frame there is always a ventilated void on the outside before the brickwork or indeed any other rainscreen layer. Also, the frame itself has a vapour control level on the internal side at least 5x higher than the external side which helps prevent the interstitial condensation risk. The other equally risky factor for a fully filled brick and block cavity is that external brickwork can leak, water gets through mortar cracks or porous bricks into the insulation layer. Worst case this causes degradation to the insulation and dampness internally or just diminishing the insulation performance if it is wet." 2) I also read the FAQ in the Thermofloc website, which again doesn't recommend using cellulose for brick/block cavity (last FAQ in the list) I know forum members here have used it in a timber frame - but has anyone used cellulose in brick/block? Does the reasoning from Jasper make sense and would it be less riskier with EPS beads?

I've been looking into DIY blown-in cellulose and have had a quote from Markham Sheffield to hire a Turbisol 56/2 for £225ex vat. I've asked about additional accessories...but the price for the machine seems quite good.

For now, I've registered here: https://www.alertr.co.uk/account/profile Not sure how well it works or whether it'll just be a spam bot....

hmmm...I'll see if I can automate some sort of price checking to keep an eye on prices.

@Nickfromwales - how many of those Nicholson plates per sqm of roof?

@low_and_there - what did you end up doing for your flat roofs?

Is this price drop temporary? I'll be needing approx 15-18 panels around this time next year

The Velux in my mums loft shattered last year because of this fault. It was installed around 20 years ago and replaced within a couple of months....which is fantastic service!

@Trillip - what did you end up going with?