Rendering celcon blocks

[Cockney]

All render systems reinforced meshed whatever you want will not hold back structural cracks when it's applied directly onto substrate,
the mesh reinforced systems are just to prevent the render failing not the substrate,

That’s cheered him up!

 

[Mouldyoldspudgun]

Eml won't stop it cracking.

He only needs to put a strip of sisal paper up the straight joint so it can do all the moving it wants behind the paper admittedly it will sound hollow but it SHOULD stop it from cracking or just put back to back stop beads up the joint and silicone up the joint, they can be close to eachother

 

[beader]

well I’m not a builder, and yes they are easier to lay. Also better thermal qualities. Tbf there’s been a few solutions here about rendering celcons so I’m sure it’s not that big of a deal.

Wasn't trying to give you a hard time just my opinion . Hope the rendering goes Ok.

 

[Ftp321]

That’s cheered him up!

 

[luke105]

I

Wasn't trying to give you a hard time just my opinion . Hope the rendering goes Ok.

Well As long as I can control the suction I’ll be alright. I’ll post a photo once it’s done and let you know if I managed the suction.

 

[essexandy]

I


Well As long as I can control the suction I’ll be alright. I’ll post a photo once it’s done and let you know if I managed the suction.

The suction on Celcon blocks has never been an issue for me.

 

[luke105]

The suction on Celcon blocks has never been an issue for me.

I just thought it would be due to the nature of their manufacture. They do seem to suck the life out of water .

 

[choppa]

I just thought it would be due to the nature of their manufacture. They do seem to suck the life out of water .

You not slapped it on yet?

 

[Ftp321]

You not slapped it on yet?

Has he f*** there's some mega metreridge there it's gonna take a well thought out plan of attack.

 

[essexandy]

I just thought it would be due to the nature of their manufacture. They do seem to suck the life out of water .

They do suck, I've just never found it to be a problem. Suction creates a chemical bond.

 

[luke105]

You not slapped it on yet?

no not yet. I’m taking the upvc cladding off and replacing with a single upvc fascia board instead. Then I can render upto it will leave a nicer finish overall. Probably do it next week but I’ll post in here with the job done. Thanks for the good input.

 

[choppa]

They do suck, I've just never found it to be a problem. Suction creates a chemical bond.

That’s what I tell my wife but she doesn’t listen,

 

[beader]

H+H | Best practice when applying render to Celcon Blocks

Our blocks can easily be externally rendered as part of a cavity wall outer leaf or as a solid wall.

www.hhcelcon.co.uk

@luke105

 

[luke105]

H+H | Best practice when applying render to Celcon Blocks

Our blocks can easily be externally rendered as part of a cavity wall outer leaf or as a solid wall.

www.hhcelcon.co.uk

@luke105

I read that before coming on here but I wanted someone to comment who’d actually done it. Just a few people on here saying they wouldn’t want to do it makes you second think...but I’m gonna do it anyway and we will see.

 

[essexandy]

I read that before coming on here but I wanted someone to comment who’d actually done it. Just a few people on here saying they wouldn’t want to do it makes you second think...but I’m gonna do it anyway and we will see.

Here's a couple of bits of rendering onto Celcon blocks. These are still there twenty-five years later.

 

[luke105]

Here's a couple of bits of rendering onto Celcon blocks. These are still there twenty-five years later.View attachment 51570View attachment 51571

Cheers. I’m glad it’s not such the big issue I thought it would be. Well, don’t speak too soon of course. If it does suffer from cracking I’ll just get the tyrolean flicker out.

 

[themucky1]

Evening all,

I have asingle story building with celcon blocks that I need to render. I’m thinking my options are either making a brush on slurry of sbr, sand, cement, water, wait to dry then scratch coat as normal.

Or would galvanised steel mesh be a better option?

or am I well out and someone here has done a few of these and found something that works? Ratios would be great.
Thanks.

ps, the building has had an alteration after completion hence the odd block work to the left of the door. Not looking for comments on this. Thanks again.

Yes

 

[Ftp321]

Yes

 

[zombie]

Here's a couple of bits of rendering onto Celcon blocks. These are still there twenty-five years later.View attachment 51570View attachment 51571

Left hand beads on piss!

 

[essexandy]

Left hand beads on piss!

And the right one if you look closely.

 

[zombie]

And the right one if you look closely.

Man after my own heart!

 

[bill]

Thanks for your reply. Have you done this before? This was the method I was hoping for.

Spot on and leave the scratch coat for a few days to let the water proof kick in .

 

[luke105]

Spot on and leave the scratch coat for a few days to let the water proof kick in .

I will do. Thanks a lot

 

[luke105]

So....the cladding has gone....just need a upvc fascia Board to cover the wood...looks much better.
rendering will start on Sunday.

 

[Cockney]

So....the cladding has gone....just need a upvc fascia Board to cover the wood...looks much better.
rendering will start on Sunday.

You will get just what you deserve for working on God’s day!!!

WTF happened there?

 

[Monkey Boy]

 

[Cockney]

Doesn’t look like that in person. Don’t know why it looks like that on the photo.

 

[luke105]

You will get just what you deserve for working on God’s day!!!

View attachment 51607
WTF happened there?

M
It’s 2 celcon bricks. You can see them from the other side. Put them in down both sides as there’s a lintel across the front which the roofs weight sits on.

 

[Cockney]

M
It’s 2 celcon bricks. You can see them from the other side. Put them in down both sides as there’s a lintel across the front which the roofs weight sits on.

Hmmm that old chestnut.

 

[luke105]

I didn’t quite get what you meant.
It’s 2 celcon bricks, will create less KN on the sides of the building to help with the load on the lintel.

dotn worry, we’ve established many times the blockwork was being rendered so it didn’t need to be a masterpiece, just level and plumb.

go on certain new build sites and you’ll see plenty of bad brickwork on externals that will never be rendered.

 

[luke105]

Once it’s rendered nobody will ever know
Cost about £950 to do the build including the roof and that will include the material for the render.
Once it’s rendered I’ll be happy with that.

 

[Cockney]

I didn’t quite get what you meant.
It’s 2 celcon bricks, will create less KN on the sides of the building to help with the load on the lintel.

dotn worry, we’ve established many times the blockwork was being rendered so it didn’t need to be a masterpiece, just level and plumb.

go on certain new build sites and you’ll see plenty of bad brickwork on externals that will never be rendered.

What’s the mix you’ve got planned for it?

 

[luke105]

What’s the mix you’ve got planned for it?

going to do a 4 - 1 sand and cement with waterproofer for the scratch. top coat with be 5-1-1 sand cement and lime. Don’t know Iime is old school now but I like how you still have movement in the mix once dry.

 

[luke105]

What’s the mix you’ve got planned for it?

what would your suggestion be for mix ratios?

 

[Cockney]

what would your suggestion be for mix ratios?

You need to do a transfer first geez. I’m not for free!