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- 9 Jan 2023
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Hi, I live in a house built in 1920s, and we've just had a re-roof done in reclaimed slate. It's been a disaster to be honest, the roofer abandoned the job without finishing it after he'd received near enough all the money. All that's now outstanding is to clad two dormer windows and we have found someone reputable to do that thankfully.
However, I'm concerned we may have leaks. I bought a damp meter, and I'm getting readings of around 19% around a velux window,. We've got a converted loft that is now a bedroom and bathroom, but in some loft storage space in the bedroom I was getting damp readings of about 29%. I removed some of the boards to see if I could see anything, and there is loads of beads of water on the membrane, and the insulation is soaking wet. I'll try to post a picture.
I'm pretty sure it's condensation...so now I'm thinking this is possibly due to a lack of airflow rather than an active leak. Or perhaps a load of water got in whilst the roof was left unfinished, combined with a lack of ventilation meaning it can't escape?
I know very little about roofing, but would the original roof that we replaced have had any sort of felt? Could this be cause by thr insulation being packed behind the loft boards being OK previously as the tiles would've allowed for ventilation but now membrane has been used it doesn't?
However, I'm concerned we may have leaks. I bought a damp meter, and I'm getting readings of around 19% around a velux window,. We've got a converted loft that is now a bedroom and bathroom, but in some loft storage space in the bedroom I was getting damp readings of about 29%. I removed some of the boards to see if I could see anything, and there is loads of beads of water on the membrane, and the insulation is soaking wet. I'll try to post a picture.
I'm pretty sure it's condensation...so now I'm thinking this is possibly due to a lack of airflow rather than an active leak. Or perhaps a load of water got in whilst the roof was left unfinished, combined with a lack of ventilation meaning it can't escape?
I know very little about roofing, but would the original roof that we replaced have had any sort of felt? Could this be cause by thr insulation being packed behind the loft boards being OK previously as the tiles would've allowed for ventilation but now membrane has been used it doesn't?
