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Have raised with the builders and they are going to come and take a look. Definitely no wasp nest up there. Thanks all for your help. I’ll report back once we have solved it.

Only a few months old. Will ask the builder about it. Lintel is brand new. Am noticing some faint water stains inside along steel beam, which extends back from this point too, so that is a bummer.

I see. So I assume that will be from a wall tie? Is this considered normal and the weep vent doing its job, or does it indicate that there is more water in the wall than there should be and therefore needs investigating how/where? Thanks again

Hi. I have a newly built and rendered external wall and one of the weep vents has some yellow staining below it. I was wondering what could be causing this? None of the other weep vents show similar staining. Thanks in advance

Hmm. Food for thought. Thanks both. Very much appreciate your input.

Thanks. That is reassuring. I was a bit miffed when I found out so good to know. Out of interest, do you have any links you could point me to for the open source stuff you mention? Thanks again.

Hi. I’ve just had a vaillant ecofit pure 830 installed. I was going to have a tado added but have learned that the tado cannot communicate via the ebus format that vaillant uses so the tado would only be an on/off switch effectively and would not have the modulation control (apparently) Is...

Hi. I’ve just had a vaillant ecofit pure 830 installed. I was going to have a tado added but have learned that the tado cannot communicate via the ebus format that vaillant uses so the tado would only be an on/off switch effectively and would not have the modulation control (apparently) Is...

I see what you mean. I guess I’ll have to look into that and possibly replace the fascia board. With regard to the wall in the short term, I take it it the options are just paint over it and see how it goes (anticipating that it will peel off eventually), or hack back plaster and let it dry...

Thanks robinbanks To get back to the original question, is there any type of paint that can be used to cover this or will it be necessary to hack out that section where the damp is and see what is underneath? Thanks

the render where the damp is is old render. There is newer render at the end where the wall was extended to make flush with ground floor

Here is a pic of the external. I’ve circled about where the internal patches are The new render there lines up with the white paint in the other pic so that doesn’t match up as being the cause I don’t think. @robinbanks: do you mean building an internal stud wall and insulating between? Thanks

Thanks. Sorry. Should have said that I have had a crack at that already. That first pic is about as small as the spot has gotten after a good few weeks of warm weather and dehumidifiers and also put a hair dryer in it for a while. So is hacking out plaster down to the brick the only option then?

Hi all. Looking for advice in how to handle a damp spot in new plaster skim. Solid brick walls This spot has not fully dried out. When it rains or is humid in the room, the patch gets bigger (second pic). There is no external indication of water being able to get in here but previously there...

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Hi. I was hoping to get opinions on the effectiveness of the low profile wet Ufh. Does it compare well against a full wet Ufh install in the traditional way? We are a mid terrace and planning a side return extension (not DIY). The existing kitchen floor is tiles on a solid slab (we think)...

Hi all I’ve a cold roof to insulate. There is no option to ventilate so am looking to fully fill the space between joists. My question is, is any specific insulation type more appropriate than others in this situation (I.e., pir board rather than wool/fiber, or vice versa). Or does it not...

sorry if misleading title. My situation is that I had a cold deck flat roof with no ventilation but it does have insulation between the joists with a gap between insulation and cold deck ( I realise now that this gap is pointless, as no ventillation). I was concerned about condensation...

Not sure I follow. Why do you say the vcl is not working?

Thanks for the response. If that is the case , I'm questioning if I bother removing the insulation at all given that condensation will still form if I removed and left uninsulated. The only difference is I would be able to visually monitor the situation. For context, this is a study, and I...