I think I might have mentioned earlier in this thread, that I get a bit of condensation forming under the new roof from the outside air freezing as frost on the bottom of the OSB deck in the roof. I want to keep these air gaps open in the roof for air flow however. So don't want to get those sealed.
We also get frost forming underneath plastic roof that runs along the back of the house above the patio. When it melts, it's probably only around half a cup of water, if that, across the whole length of the roof. So even less in my room. It only really happens around 2 or 3 days a year on the coldest days of the year.
We also get a bit of frost forming in the loft and it melts in the same way. Again it's a very small amount, but the insulation in the loft catches this small amount of water and it just evaporates eventually due to a vent in the loft.
The problem that I have in my room, I don't have anything to "catch" these small drips and so the arcade machines and office equipment could get dripped on, which is not good.
So, to fix this I decided to install some insulation above the new false ceiling. Here are the options the I have:
Fibreglass - Cheap, absorbs water, itchy and potential health problem caused by inhalation
Rock wool - Cheap, water resistant (bad because I need to catch the water)
Polyester - Cheap, absorbs water, poor fire resistance
Sheeps Wool - Relatively expensive, absorbs water, good fire resistance, fine to handle without gloves and hopefully no health effects from breathing in.
After mulling it over for a while, I bit the bullet and bought the 50 x 570 x 13000 rolls from here:
Thermafleece Sheeps Wool Insulation suppliers. Thermafleece Cosywool rolls are easy to use sheep wool insulation, supplied in compressed packed rolls for quick installation. Eco Friendly insulation solution for loft insulation, roof, walls and floors.
www.celticsustainables.co.uk
About double the price of the same Polyester roll, but I would rather have some fire resistance in the insulation.
To be able to install the insulation, I would need some lightweight beams that go in the opposite direction to the false ceiling beams:
Then started to unroll the insulation across the new beams:
One roll done:
Second roll done:
As this was 50mm thick, I doubled up the insulation so that I now have 100mm up there now:
Two rolls were more than enough to do two thirds of the room which is all I need for now as that side of the roof is exposed to the elements. The other side of the roof is on the house side so seems ok. I might extend the insulation further across the room, but I want to install a small storage place in the ceiling void on that side of the room first with an access hatch in the false ceiling.