Single brick wall insulation options

[gazdkw82]

We have a small toilet downstairs that had signs of mould. I've decided to pull the plaster off. I'm glad I did because it was slightly damp in places. I think this is mainly because 1. It's a single brick room and 2. They just nailed the plasterboard to the brick leaving a gap of round 10 mm throughout.

Anyway, what's the best options for boarding again in the intention to tile the whole room.

I'm looking at something with a good insulation and moisture barrier qualities.

Also it can't be too thick because it's a small room and the thickness of the board plus the tiles will eat into the room very quickly.

(Ignore the mess )

Pics below

 

[Squid]

How old is the house and what is on the outside of that wall as that brickwork window side is sh!te and a abortion it looks like it could be a dodgy lean to as well, need more information as you need to rectify any issues first and not just mask the problem and as you mentioned single brick thats not to adhering to building regs.

 

[Rpa07]

And put the seat down if you’re going to show the forum your ‘secret place’ - really!

 

[gazdkw82]

Totally understand the concern. Yes you're right the brick work is a shocker. I'm going fo sort that.

So basically, the window opens out to our driveway, so front of the house (north facing)

Right hand side wall is the back wall of our kitchen. The back wall with the toilet is the side wall of the house.

These pics may help

 

[gazdkw82]

 

[Leesparkykent]

What about rendering the internal walls, top hating it, insulation between top hat then hardier board or green plaster board.

 

[gazdkw82]

What's top hating?

Sounds like these options are just eat into the already small room

 

[davesparks]

Blackjack the walls, waterproof render and a coat of finish plaster.

Treat the brickwork on the outside with water seal

 

[Leesparkykent]

What's top hating?

Sounds like these options are just eat into the already small room

MF5 Furring Bar 3600mm - http://m.builderdepot.co.uk/mf5-furring-bar-3600mm.html

If you are worried about space then the only practical solution would be to use external wall insulation and have it rendered or monocouched . If you want to insulate internally then you will have to compromise as it will have to be battened off or insulated plaster board which will come off the wall by a couple of inches.

 

[Squid]

Was that extension legal?

The only way I can see apart from knocking it down it to sort the joints out in the brick work and line with a polystyrene backed plasterboard, how long are you planning on living there?

 

[PEG]

Right,that is a bus ride from regs,and the brickwork is poor.
I would check that the kitchen extension wall,that abuts this,is not of the same construction,as the damp will track to the partition wall (toilet is against this) and this is your utility wall,also internal.

Have these single skins even got a DPC? Have you just bought the property?

Attempting to remedy this issue,purely with a "chemical" solution,will not have longevity.

Unfortunately,whenever one finds,gross divergence,from standard good construction methods,such as this,there will inevitably be other short-cuts. It could be the floor construction,fire regs,drainage,etc,but i strongly advise getting it inspected,by a clued up builder.

It could be worse...like a £60,000 loft conversion,only fit for use or sale,as "extra storage"

 

[gazdkw82]

We've been here for 7 years and only just got round to sorting the toilet. There was only slight signs of mould in the bottom corner which is obviously being caused by condensation build up. All the houses down this road are the same design. The toilet is basically a concerted coal storage which everybody has converted into a toilet.

I agree the brickwork is a dog's dinner which I will repoint before I do anything else.

We plan on staying here long term as we are happy. This is the only room we have never touched so it was desperate to be done.

The entire house has had a DPC injection into the bricks. I personally don't think there is anything else sinister going on, it just doesn't look good visually. The adjacent kitchen walls shows no signs of damp

 

[Midwest]

I'd get some advice from a competent electrician builder perhaps even get a quote.

 

[gazdkw82]

I'd get some advice from a competent electrician builder perhaps even get a quote.

Quote for what?

 

[Wilko]

Great to see vde pliers in the little room
I vote for @davesparks post #11 method. Check roof, guttering and down pipes are getting water away properly. Check for internal condensation from being a cold place (heating?).