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Fixings? (Read 1580 times)
The_Trician
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Re: Fixings?
Reply #7 - Feb 24th, 2017, 12:11am
 
Thanks for the feedback guys.
I don't want to go out the full 4"+plasterboard thickness on the walls, because doing so would eat up too much space and make the space too small.
So, I thought I'd compromise and just do 50mm celotex instead.
Some of the cavities already have sheets of rockwool inserted, which was done during the build, but the bricklayer ran out of the stuff before he could complete all areas.

As much as I'd like to plyboard line it all out, the costs would be off the scale.
Instead, I propose to fix some horizontal bridging battens in to provide a fixing for shelves etc, and then celotex round them
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Re: Fixings?
Reply #6 - Nov 6th, 2016, 6:52pm
 
Depends how warm you want, but you could stud out the wall with 4x2, not fixed to the thermalite.  Infill with 100mm celtoex.  Insulation backed plasterboard over top if you really want to go the extra mile.
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Re: Fixings?
Reply #5 - Nov 4th, 2016, 7:55am
 
OSB is oriented strand board, it's like a cross between plywood and chipboard. Personally if I have a wall that I'm going to need to fit a load of fixings I fix plywood to the battens before plasterboarding. IMHO plywood takes screws better than OSB.

Will you need a vapour barrier, yes definitely. What you need to prevent is any moist air getting past the insulation as it will condense on the now cold inner wall and cause all sorts of problems long term. If you are using foil faced insulation you can use aluminium tape to completely cover the battens and minimum 25mm over each edge of the foil board. Or you can get a roll of vapour barrier and cover the whole wall before fitting the plasterboard. Same for the floor, you need a vapour barrier, I use 1000 gauge DPM for this as it gets a harder life than the wall vapour barrier.
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The_Trician
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Re: Fixings?
Reply #4 - Nov 3rd, 2016, 9:51pm
 
OSB? What's that?
Vapour barrier - w/shop is red brick, with insulated cavity and inside wall comprises of thermalites.
Do I still need a vapour barrier?

Am also proposing to fill gaps between roof rafters with celottex - purlin-type pitch roof with welsh slate and lined with Tyvek 200.
Hoping to try to create a 'warm roof' effect by blocking all outside air coming in.
Floor is concrete (with dpc) but will be raised on joists and fitted with celotex in between spans.
Was wondering about chucking in some pare bits of Tyvek atop the concrete first, then fitting joists over this.

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Re: Fixings?
Reply #3 - Nov 1st, 2016, 5:27pm
 
Do you have a vapour barrier ?  Or plan to have one ?

And think about maybe sticking up some sheets of OSB in places to hang your cabinets from.

If you want to look at some great workshop build threads then go to http://thewoodhaven2.co.uk

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Re: Fixings?
Reply #2 - Nov 1st, 2016, 12:44pm
 
Insulated plasterboard and dry line it.
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Re: Fixings?
Reply #1 - Oct 31st, 2016, 7:51am
 
Both Plasplugs and Fischer make specific plugs for thermalite, ordinary plugs are useless in these blocks as you say. You can sometimes get away with using 100mm frame fixings, which are easy to use when fitting studding, but you need to be really careful not to tighten them up to much. If you are still having problems you can glue plugs in with styrene free resin, comes in a cartridge, is easy to use and sets like rock but you need to have all the holes drilled and ready. Squirt resin in the hole, push in a plug, move on to the next quick sharp as the resin will set in the nozzle in just a few minutes.
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The_Trician
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Fixings?
Oct 30th, 2016, 4:25pm
 
Folks,
What's the best type of fixing when attaching timber battens to thermalite blockwork? I want to batten out my w/shop walls and infill with celotex 50mm boards before plasterboarding over.

I know that thermalite blocks are a bit crap when using expansion-type fixings and wondered what you might recommend?
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