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Thanks Fixitflav. I had effectively ruled out the flashing in the end with the bitumen and mastic. It couldn't be coming through that. My belief now is that after the roofer repaired the original leak the lime mortar was saturated from all the testing to find it in the first place, and...

Thanks Johnny. I've read that it is supposed to go a uniform light pink before it is dry, but it hasn't changed from the picture I posted over 24 hours. Pretty sure the last bit I got plastered never went completely uniform so maybe its as dry as its going to get now, but will wait another...

Thanks Johnny, I understand about mist coats etc. What I am looking for is opinions on whether it is ready now for painting, or how do I know when it is dry enough. I know that you can paint straight on with Trade type emulsion which is breathable, but not clear on how long before painting with...

Hi Folks, I am sure this question has been asked a million times, but as there doesn't seem to be a definitive answer I am curious on getting an opinion based on those with experience. I have just had ceiling skimmed, to cover artex ceiling and some plasterboard patched areas from previous roof...

Thanks Alastair, will PM you, but there is not really much to see. There are no visible gaps in the flashing, or the pointing/stonework. The leak only appears after the wall has been soaked in a particular place for about 20 minutes or so which is what is making it so hard to resolve To be...

Why do you ask Alastair? Sorry, not so keen on putting my exact location on the forum.

That's a good question, I would like to know the answer to that myself. Maybe because he has already been paid, or maybe on another job that he doesn't want to leave, or something else, who knows. I think that would be a bit of a stretch, given that he hasn't offered me an alternative. All I...

This morning I painted a thick coat of bitumen paint overlapping the raggle joint to about 100mm above, covering to just above the cement fillet in the pic. Early this afternoon I rigged up the hose pointing at the position where I was getting the leak before, and ran for about 30-40 minutes...

Yes, a raggle was cut and felt run into masonry. On the second attempt he raked out the stones above the raggle in case it was getting behind and cemented in above the raggle, the fillet that can be seen in photo. I would have insisted on lead if it was visible, but it can't be seen from the...

No window above. I've tested it pretty methodically with a hose to narrow down the area, and its either the joint or the felt. I've just trowelled on some bitumen mastic in the area I've narrowed it down to and I am going to test it again with the hose on the same area. I think bitumen mastic is...

Sorry, missed this part. What do you think is more likely?

Right, I see what you mean. What I had been thinking of doing was rendering over the top of the felt and up the stone a little, feathering it up the wall, then painting over, but I suppose if there is movement the same will apply. Still, I am surprised that movement would have an effect this...

Thanks. In what way would the joint behave better if the flashing was lead?

Morning all, hope you are well and staying sane in these crazy times. Sorry, below bit of a long story but wanted to include all the details. I have had a new felt roof on flat roof of extension, which is built on to a 200 year old sandstone/whinstone house. Keep getting a leak on one section...

Thanks Fenny. I'm using glass fibre, mainly due to cost and ease of installation as I am doing a full fill and trying to fill some awkward spaces. Also concerned that if leaks develop Kingspan or other closed cell insulation new would potential hold water up against the timber. That's also part...

In theory yes, but impermeable paint will be my VCL. I appreciate you concern regarding this, but I have thought this aspect of it through and I understand the science behind vapour transmission and the risks. I was hoping for advice on the plasterboard question specifically.

That in itself as a long story. In short, I am not. There is no practical way to properly supply through ventilation based on the existing design. I wanted to convert it to a warm roof, but there are a couple of practical reasons why this is not possible, or at least not practical without...

The story is as follows... Flat roof extension, very little insulation in roofspace. Only way to access the space between the joists to place insulation is to pull down the plasterboard. I've done this already in the garden room section where I pulled all of the plasterboard down, then put...

Thank Daz. Was sitting there last night trying to work out how many Linear metres of tongue (~100m), at around a 3mm bead, and getting just less than a litre, but then a 4mm bead would be more than a litre - hmm, maybe I should just ask someone!! :D

Going to do this job on Thursday and was hoping someone could advise roughly how much pva wood glue I'll need for a 12m square room? It's just for the tongue and groove only, floating, not glueing down. I've bought a litre, but I won't have the car on Thursday so if rather have too much than...