Parex acrylic or Krend ?

[Mr Blobby]

A whole year has past, sto rend has gone bust and we still haven't had the house rendered.

 

After talking to the builder's regular renderer we have a choice of either a 2-coat solution of Parex acrylic with a very thin coat on top, or a single coat of KRend silicone based render.

 

Render guy says the acrylic is the best product in terms of colour and robustness, but he would say that, as it's twice the cost.  KRend is about £35 sq/m, acrylic 75 ish.  Do those numbers seem reasonable?

Builder thinks I'm bonkers to spend more than Krend.  All his other builds are rendered with Krend silicone and he seems to think the KRend great.

 

Our house is block build.  With external area of abour 300 m2 then its about 10k more for the acrylic.

Is the renderer correct, is the acrylic a better product, is there anything I should look out for?

Edited August 20 by Mr Blobby

[SteamyTea]

4 minutes ago, Mr Blobby said:

is the acrylic a better product

Generally acrylic polymers are more UV stable (it is the only plastic that is, why it is used for specticals, as us polycarbonate, but that has chemical and robustness problems).

So acrylic will be more colour stable, but silicone is pretty good.

I think @ProDave had a render fail, but can't remember what sort.

[nod]

Both ok 

He’s very cheap on the K rend 

Thats about what I pay the renderers that work for me and I supply a pump and van 

2 coats if he’s not spraying it 

 Ask to see his last two jobs 

Lots of plasters out there that will be happy to practice on your house 

 

[Mr Blobby]

Thanks for the advice. 

 

I visited the other house my builder was working on about a month ago when the renderer was on site. 

He had a sprayer and a couple of helpers feeding the mixer, so to a layperson like myself, it looked like they knew what they were doing.

 

Final numbers from the renderer are just in:

Parex BL10 white: £12,200.  Which I did not ask for (I asked for krend silicone K quote) because AFAICS the BL10 is not silicone based and crack resistance is important.

Parex acrylic: £24,000. 

 

I'll look again at the KRend reference house down the road, and probably end up with that as the safe and cheaper option.