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Originally Posted by SimonG
Anyway - I am currently doing my loft and installing more loft insulation. Had between 20-30cm to begin with and now have 20-40cm.
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If you put any more on top, not only are you looking at diminishing returns in terms of additional insulation, but you will be reducing the effectiveness of the insulation at the bottom as it will be squashed with less air trapped in there.
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I am using eco wool which is made from 85% recycled plastic bottles. Lovely to work with compared to the pink fibre wool that was put in by the builders.
Anyway - my question for you brainboxes.
I currently have filled the gap between the joists and then cross laid 200mm of eco wool to stop bridging.
If I put a third layer of insulation down will the benefits be noticable?
Also I have a area in the loft that is boarded with 100mm of insulation below it - does this discount all the insulation I have put elsewhere? I looked at insulation board but it doesnt appear to be that effective.
Any ideas welcome - I want to make my home as energy efficient as possible but have very very limited funds currently (hence the loft being a quickish win)
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The insulation board could be one of the best ways to have insulation between the joists and boarding, but I guess its a pay off between using the area and having ideal insulation. You could raise the joists and have insulation between more wood, but I think the insulation board would be easier.
Have you insulated the hatch? I found sound rigid stuff in a skip which did the job perfectly. Also fitted draft proofing around it as well.
There is insulation you can fit to the ceiling of your loft, although avoid the spray on stuff like the plague.