Another person here with condensation in the loft – wet rafters and water droplets dripping off the roof felt. I know there’s many many historic posts talking about this problem as I’ve read most of them but am thinkng of removing the new insulation…
I moved into my house last spring. The existing loft insulation was just loose fill, which ranged in depths depending on how it had been scattered – between 20mm and 70mm on the whole. In summer I had new 300mm loft insulation laid on top of it by Carillion (free grant). They re-lagged the pipes and put new jackets round the water tanks as well (both have lids). I noticed some condensation in the loft in November when we first had freezing conditions, read all the advice on here and made sure the insulation wasn’t blocking the eaves vents and that they were clear. The vents were clear and loft insulation wasn’t tucked in but I moved the insulation back a little more to hopefully increase airflow. When standing in the loft you can certainly see daylight from both of the eaves (house is detached, built late 1980’s). Other relevant info is there are no ridge vents, there is a vapour barrier fitted to the loft floor over the bathroom only. I have no bathroom extractor but always open the window when taking a bath (I rarely use the shower) and leave the window open a while afterwards. I live on my own so shouldn’t generate too much moisture (!) – its not as if I’m a big family having multiple baths or doing loads of cooking.
I don’t know if this happenned last year as I wasn’t living there then. All I know is it’s happenning now, and incidentally my house is the only 1 in the street whose roof is still fully covered in snow. The insulation is obviously doing its job but is it doing it too well!? Haven’t measured the temp in the loft but its bl00dy cold! I’m seriously considering removing the new insulation in an attempt to alleviate the problem! I’d rather lose a bit of heat from the house into the loft and have a dry loft/roof. What do you reckon?
I moved into my house last spring. The existing loft insulation was just loose fill, which ranged in depths depending on how it had been scattered – between 20mm and 70mm on the whole. In summer I had new 300mm loft insulation laid on top of it by Carillion (free grant). They re-lagged the pipes and put new jackets round the water tanks as well (both have lids). I noticed some condensation in the loft in November when we first had freezing conditions, read all the advice on here and made sure the insulation wasn’t blocking the eaves vents and that they were clear. The vents were clear and loft insulation wasn’t tucked in but I moved the insulation back a little more to hopefully increase airflow. When standing in the loft you can certainly see daylight from both of the eaves (house is detached, built late 1980’s). Other relevant info is there are no ridge vents, there is a vapour barrier fitted to the loft floor over the bathroom only. I have no bathroom extractor but always open the window when taking a bath (I rarely use the shower) and leave the window open a while afterwards. I live on my own so shouldn’t generate too much moisture (!) – its not as if I’m a big family having multiple baths or doing loads of cooking.
I don’t know if this happenned last year as I wasn’t living there then. All I know is it’s happenning now, and incidentally my house is the only 1 in the street whose roof is still fully covered in snow. The insulation is obviously doing its job but is it doing it too well!? Haven’t measured the temp in the loft but its bl00dy cold! I’m seriously considering removing the new insulation in an attempt to alleviate the problem! I’d rather lose a bit of heat from the house into the loft and have a dry loft/roof. What do you reckon?
