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For anyone interested… I actually went a different route with this. I paid a guy to get up on the roof and treat the wall with Stormdry masonry cream on the exterior side. Hopefully should give it some water resistance - at least more than it has now. I’ve then gone ahead with lime mortar /...

Quick question. The Thompson’s brick sealer says in big letters ‘Exterior use only’ Should I be looking at damp proof paint rather than brick sealer?

Haha if only I could achieve that! Think I’ll go with your suggestion of sealing the bricks and injecting DPC cream along the roof line. That’s probably the best I can do! And also quite belt and braces. Any favourites for foam adhesive?

Haha. Sadly yes. Window doesn’t open so it was fine with BC. As I mentioned earlier - build was a horrendous experience that I just wanted to be over- putting an extension on that was the least of my priorities at the time

I’m pretty sure that is the case yes. I’ve attached a photo of the opposite side which is identical - so yes I think there are a bunch of snapped bricks in there. That part of the wall isn’t visible from the outside. Glad you think internal waterproofing is a good idea. Any recommendations for...

Just returning to this job now. Having inspected the wall, there are some salty deposits coming through and I *think* there are some slightly damp patches - water coming through the brick from outside. But very, very small amounts. Never any water on the stairs below. I’d really appreciate a...

Whenever the lights are on in the bathroom, and overrun for around 20mins after that.

This would probably work pretty well for me actually. Thanks for the suggestion. I reckon I have around 5-6cm in total to work with - do the battens have to be 25mm thick or could I go thinner? Thanks again.

Didn't realise it was quite that expensive! But yes, breathable and potentially avoiding a moisture/mould problem. What about sealing the bricks, battening the wall, using rock wool or something similar between, then a vapour barrier then plaster board? Thanks. Definitely not wet, but as...

Will definitely do the fan. In terms of chimneys, the entirety of one has been removed so there is no flue there anymore - just the residual chimney propped up in the wall in the loft. The front rooms still have a chimney - stove in the downstairs living room and above that on the first floor...

What about using a breathable brick sealer to the inside of the bricks, then fixing aerogel backed plasterboard directly to the brick (or with small battens first)? Pretty sure I can get it airtight on the inside. Access to the outside wall to render it would be basically impossible

But cold! Any particular suggestions?

Fireplace is now a wood burning stove with a flexible flue up to the chimney. Extractors x 3 - one over the hob to the outdoors, one over the main shower directly through a vent tile in the roof and the last in loft en-suite through a mushroom vent on the roof. I’ll try to find photos. Middle...

Best not to ask about regs. The build was a horrendous experience and to this day I regret doing it. Nonetheless, it did pass regs and I have the certificate for it. It is a single layer of bricks. Only half of that small bit of wall actually faces the elements - the other half is to the next...

Awesome. Thanks. In which case I’m probably best off using single room ones for the most affected rooms in the house - both middle floor bedrooms. I reckon it would be almost impossible to retrofit the entire house

In which case those single room MVHR systems should work pretty well right?

Thanks. I actually have a tado system and will keep an eye on humidity levels. House is totally fine in summer - winter is the problem. And mainly the windows/bathroom walls (solid brick)

What an awesome reply. Thank you. Re the ASHP- my thought was these heat pumps/air conditioners have dehumidify settings as well as heat and cool, so they might remove some of the humidity from the rooms and reduce the condensation we get. Also providing a more consistent warmer air temp might...

Well, either really. As it’s just a single brick thick I can imagine water can wick through the wall. I didn’t want it getting trapped behind any insulation I put in. Likewise I suppose warm air could hit that wall fun the inside and condense on it if there are any breaks in the insulation. Just...

Thanks. Would the brick need to be waterproofed before fixing cork boards? And can plasterboard then be fixed to the cork? I was thinking insulated plasterboard may be the easiest option, but was worried about possible damp behind between the brick and the insulation if I did that. Breathable...