Condensation in my loft

emweaver

the vents will not solve the problem, we had vents fitted after first noticing the problem 2 years ago. whilst we didnt notice any condensation last year we had it worse than ever this year which black patches forming on my bedroom ceiling.

headcoat

Its has probably been covered in these thread, didnt read them all, but make sure the loft insulation falls short of the eaves and that you have some kind of ventilation there. I am assuming the insulation is horizonal. If it follows the line of the roof slope it would require a 50mm vent gap behind it.

Secondly I found some roof tile vents that can be installed from internally can't find them now though, but that may be a cheap DIY solution.

emweaver

Hi headcoat i did see your post and asked what the eaves are / where they are? our insulations goes right from 1 edge to the other of our loft and curls up the side on 1 end

Joatmojo

Condensation in our lofts is a major headache these days, and it is a subject that needs approaching logically.

The first thought always seems to be 'external vent tiles'.

The second probably 'permeable membranes'.

Before you start knocking expensive holes in perfectly good roofs though, browse about on the web for 'Lapvent'.

There is a simple solution.

Joatmojo

quietheart

We've stuck our dehumidifier in the loft and in 24 hrs it's a whole lot better. I know it won't solve the problem but psychologically i feel better knowing it's not dripping!
The guy who did our roof said he's had loads of people contact him this year about condensation due to the lack of summer(s) we've had.......
Think we'll be increasing ventilation sometime soon.

headcoat

The eaves are at the edge of the roof, ie where the fasia and gutter is. Try looking at Glidevale.com for more info on the vents they do. If nothing has changed I would imagine you need to increse the ventilation up there at eaves and ridge level.

worth doing now, or it could work out costly if left too long.

Another good site I just found is https://www.timloc.co.uk may not really be a DIY job depends on your experience

latecomer

emweaver wrote: »

Hi headcoat i did see your post and asked what the eaves are / where they are? our insulations goes right from 1 edge to the other of our loft and curls up the side on 1 end

First thing to do is pull it back from the edges to let air flow through. It will probably solve a lot of your problems.

sidefx

Joatmojo wrote: »

Yes Aliasojo, I am involved in this industry and have been nearly all my life.

I sympathise with what you say, and fully understand that we all have to rely on some sort of professional advice at one time or other - it's just that in some subjects some experts are more aware of some things than others.

Ripping a hole in underfelt and putting a vent tile ablove it is a pretty naff way of going about things as far as I am concerned - for the reasons stated.

I don't wish to appear pedantic - just voicing my honest opinion.

I was interested to read what you have been saying Joatmojo. I spoke to a builder friend of mine who also wasn't keen on the idea of putting a hole in the underfelt. He said, as you did, it could create more problems than it solves. He has suggested another airbrick as I live in an end terrace. I just wonder if this will solve the problem, because it won't create a through draught!

dave111

can you recommend a draft excluder for my loft hatch.
thanks

Butterfliesarepretty

Oh god. I live alone in a mid terrace. My walls are 11ft high in each room and I have recently had loft insulation 2 years ago, but I have had new ceiling in the bedroom and plastered walls all over the house, including new re-wire. Now I can't get to the loft myself, because its 11ft high from the top of stairs and I would need loft ladders. there is a loft door wide enough, a light switch inside, but nobody commented that the loft was wet. My old plaster on my bedroom ceiling had faint stains on it, is that the moisture coming through?

So obviously I need a trader to put me some loft ladders in so I can have a look. How much should I expect to pay for this work?? Bear in mind I have no-one to help me with this. I need to look in my loft now, to protect the work I have had done:rolleyes: I don't want it ruined by condensation.