Hello.
I'm hoping someone here knowledgeable or has experience at this type of job.
I'm currently working on the front bedroom in my 1930's semi (similar design to this one) CLICK ME
I am currently replacing ceiling in the main bedroom due to cracked lath and plaster. At the same time I thought it would be a good idea to replace the bay window ceiling, which is also lath and plaster. On removing I have found a 210mm gap between plaster and the flat roof (timber and lead) with no insulation.
My plan for above the the bay was to install 100m of Kingspan/Celotex which would leave a 120mm gap above for moisture to dissipate. Then either Alu tape across the beams or use plastic sheeting to install a vapour block? Sound OK?
Now the second part:
I noticed quite a draft coming up through some broken floorboards and also from under the skirting in the bay window. I noticed that the window sill is screwed on so popped one of the sections of to find out why. Behind the exterior tiles there appears to be some studwork and nothing else until the internal lath and plaster wall in the bay. As far as I can see I essentially have cold air flowing between the joists between upstairs and down - this can't be energy efficient!!!
Ideally I don't want to remove the tiles from the front of the bay and would like to try to tackle this while the front bedroom is a mess. I don't however want to cause more problems down the line with condensation and rotting beams.
I have been searching Google for information and I'm more confused than ever!
Here's a picture CLICK ME As you can see, at the top of the picture it joins with the uprights that support the plaster inner bay wall. I'm not sure how i'd achieve a air tight barrier in this case? The angled beams are 70mm deep.
Has anyone tackled this type of job from the inside - if so how did you achieve the vapour layer?
Thanks
Mike.
I'm hoping someone here knowledgeable or has experience at this type of job.
I'm currently working on the front bedroom in my 1930's semi (similar design to this one) CLICK ME
I am currently replacing ceiling in the main bedroom due to cracked lath and plaster. At the same time I thought it would be a good idea to replace the bay window ceiling, which is also lath and plaster. On removing I have found a 210mm gap between plaster and the flat roof (timber and lead) with no insulation.
My plan for above the the bay was to install 100m of Kingspan/Celotex which would leave a 120mm gap above for moisture to dissipate. Then either Alu tape across the beams or use plastic sheeting to install a vapour block? Sound OK?
Now the second part:
I noticed quite a draft coming up through some broken floorboards and also from under the skirting in the bay window. I noticed that the window sill is screwed on so popped one of the sections of to find out why. Behind the exterior tiles there appears to be some studwork and nothing else until the internal lath and plaster wall in the bay. As far as I can see I essentially have cold air flowing between the joists between upstairs and down - this can't be energy efficient!!!
Ideally I don't want to remove the tiles from the front of the bay and would like to try to tackle this while the front bedroom is a mess. I don't however want to cause more problems down the line with condensation and rotting beams.
I have been searching Google for information and I'm more confused than ever!
Here's a picture CLICK ME As you can see, at the top of the picture it joins with the uprights that support the plaster inner bay wall. I'm not sure how i'd achieve a air tight barrier in this case? The angled beams are 70mm deep.
Has anyone tackled this type of job from the inside - if so how did you achieve the vapour layer?
Thanks
Mike.
