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interior finishes - board marked concrete?


Tom

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Still at very early (as in still haven't bought the site yet!) stages of our project so still mulling over various construction methods etc. We like the look of ICF but I'm concerned what finishes we can have on the inside. Dot and dab plasterboard seems pretty standard but are we limited to this? I'd really like some board marked concrete inside - I like the look and it would also add to the thermal mass. Has this been done with ICF before? Is pouring a 1-2" thick vertical slab on the inside feasible? I'm thinking fix rebar mesh to the interior then build the wooden form say an inch or two off of this. I'm guessing there would be issues with the concrete pour/voids etc. Any ideas?

Thanks all

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A friend of mine is building a very modern build with board finish concrete on the inside, he is basically making the shell a concrete box with insulation stuck on the outside, it’s all been designed and looks cracking. 

The only problem is he can’t find anybody to build it, the general builders just haven’t got a clue unless it’s traditional brick cavity, so he’s having to look at civil Engineering companies. 

I would look on YouTube at the builds in the states as they are far more up on these methods. 

 

Also look at an icf product that only has insulation on one side and plywood on the other, you could substitute the ply for boards to give you what you want, however you would need to increase the insulation on the outside to make up for the lack of it on the inside. 

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Best place to be at this hour. I'm working nights so I plan to be horizontal in approximately 1.5 hours. 

Can I ask what your wall structure is and how the tiles are fixed to it? 

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41 minutes ago, Tom said:

Best place to be at this hour. I'm working nights so I plan to be horizontal in approximately 1.5 hours. 

Can I ask what your wall structure is and how the tiles are fixed to it? 

 

Its a timber frame construction, with tile board (wedi board) fixed to the battens, and then these concrete tiles fixed using tile adhesive.

 

Here s a slightly better pic

C5E814E1-8B47-4F1D-A1A4-201B09930D69.jpeg

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Hi

sounds like an interesting project.

How would services work with this type of wall construction? I’m guessing you’d have to decide quite early on with switch and socket location?

would the internal partitions have the same finish?

are you intending to paint it?

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Really liking those tiles TRW, definitely one for the mood board. Thanks for the link too.

Luckylad - with regards services I was thinking metal clad boxes and surface-mounted trunking to fit with the industrial look. Likewise leaving it unpainted. Perhaps more scope with different cladding for the internal partitions rather than having to find a way around fitting to the ICF?

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@divorcingjack 

 

Just checked some old emails - the plaster 3D wall finishes were about £800-1000 for a 6m x 2.4m wall.

 

The concrete panels (1200 x 600mm) were £56 each.

 

Another option might be one of the microcrete finishes that are applied like plaster - either skimmed, or I guess you could possibly do the same thing with the timbers mentioned in an earlier post to get a wood plank finish. 

Edited by Trw144
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On 19/01/2018 at 19:18, Russell griffiths said:

Also look at an icf product that only has insulation on one side and plywood on the other, you could substitute the ply for boards to give you what you want

With single sided icf like this I think you'd be in a world of pain trying to modify it to get board marked finish.....you're buying the jointing web structure but would have to deconstruct it totally to get the boards in, and the boards won't substitute the ply, you'll need to fix the boards to the ply.  

 

On 19/01/2018 at 18:32, Tom said:

Is pouring a 1-2" thick vertical slab on the inside feasible? I'm thinking fix rebar mesh to the interior then build the wooden form say an inch or two off of this.

Compared to the pre formed 'decorative' boards people have linked to I don't see you saving money.....just being subject to a more risky hit and miss result.

 

I would say if you skip icf and end up doing shuttered concrete, don't be deterred from board finish on its expensive reputation.  Materials are cheap, just rough sawn timber (which will mostly be re-useable), nails and wax.  It's labour intensive but totally unskilled.

 

On 19/01/2018 at 19:18, Russell griffiths said:

The only problem is he can’t find anybody to build it, the general builders just haven’t got a clue unless it’s traditional brick cavity, so he’s having to look at civil Engineering companies.

Having witnessed every moment of the process on mine i'd say he absolutely wants a specialist reinforced concrete contractor...there's plenty of them.....i'd certainly recommend mine if he's in range (dorset or bordering).

 

My board finish; board+finish3.jpg

 

My fair faced ply finish; LGFwallpourreveal1_2.jpg

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How does shuttered concrete (+ external insulation) compare to ICF in terms of build cost and U values etc? I really like the rough and ready finish and would save on interior decorating costs....

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We're hoping to have some concrete effect finishes inside, in particular on a 3/4 height wall separating our kitchen / dining from our lounge. I've seen the wall panels/tiles mentioned above but recently I've spotted another potential option which others might be interested in.

 

The picture below is of a portable building (made in Spain by Abaton, and v.nice in my opinion) but it was the external finish which grabbed my attention - according to the documentation it is 'grey cement wood board' Looks like pre cast concrete from a distance at least and might be a lightweight option for wall decoration etc.

 

I've not really seen anything similar in the UK but perhaps others have...

 

 

Concrete Board.jpg

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I'd consider buying a piece of cement board and experimenting with distressing it, including spraying/splashing parts of it with water, tinted washes, chemicals (particularly acids), or whatever. Try sealing the result with matt/gloss lacquers to see how that changes things. 

 

We had a couple of big offcuts lying around outside for several months and they developed an interesting patina!

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2 hours ago, bissoejosh said:

The picture below is of a portable building (made in Spain by Abaton, and v.nice in my opinion) but it was the external finish which grabbed my attention - according to the documentation it is 'grey cement wood board' Looks like pre cast concrete from a distance at least and might be a lightweight option for wall decoration etc.

 

I've not really seen anything similar in the UK but perhaps others have...

 

 

Concrete Board.jpg

 

I think this is just what we'd call "cement board", which is wood fibres in a cementitious binder. The stuff we left outside developed a similar patina over several months. 

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On 1/29/2018 at 13:08, jack said:

 

I think this is just what we'd call "cement board", which is wood fibres in a cementitious binder. The stuff we left outside developed a similar patina over several months. 

I think you're right, Versapanel looks like a very similar concept

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