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I called Rockwool tech and they said 50mm should be fine as long as there is an air gap and they said to leave an inch at the ridge to allow air to pass over to the other sides.

Thanks wonder if I can use 50mm Rokwool slabs and leave 25mm...how can I ventilate better, the air comes thru the tiles and felt so I am not sure what else I can do, do I need to add a vent to every ridge board topbetween every rafter? I thought the air gap is my ventilation? It would be...

Thanks John so looks like I need to cut and do that, least I know its safe to do so, thanks again.

Hi lads I am making a music room in my loft and need to insulate the roof, the depth from felt to rafter edge is only 75mm, so I will use 25mm Ecotherm to leave the 50mm air gap behind, my question is would Rockwool acoustic slabs be better for noise reduction? thanks

Hi Chaps I have 400mm gaps from rafter to rafter in my loft and wanted to ask if there is a velux I can get this wide, most I am seeing is 47mm - 55mm, but that would mean cutting into a rafter to fit as these would be too wide, is there smaller velux that would fit, if not can I cut into a...

Hi, If I use the 25mm and leave the 50mm gap behind, do I need to add vents to the centre top ridge beam that runs along the whole of the house rafters, does the air flow need to go from one side and over the top to the other side, if so that would mean adding a vent in between all all the top...

Agh cool, I really dont want to lower the ceiling anymore but I will take a look at that mate...otherwise its the 25mm and good insulated plaster. Thx

Thats good but can you tell me if the mx kingspan I can use is 25mm to leave the 50mm gap behind for the air flow? thanks

Yes but I only have 75mm from tiles/felt to edge of rafters, so I am reading I need to leave a 50mm gap for air flow between the felt and insulation which means I can only use 25mm kingspan to edges which would give me the 50mm behind...then as you say use insulated plasterboard as oppose to...

RAL 7021 is the one.

Hi chaps anthracite grey RAL 7016 is reall good, I have done my kitchen cupboards and backdoor this color but I wanted something a little darker more gun grey for my window frames outside...is there something darker than what I already have below for this? thanks all...

I didnt see any glass beads types 12mm - 13.mm wide? thanks for helping..

Hi chaps been looking for new beading which for some reason finding tricky for my wooden window frames, fitted new glass but old beading needs replacing, looked at pvc and I know I would need to stick it down as oppose to nailing the wood beads, but would it be ok to fit the pvc beading...

so 25mm then insulated boards

Thanks all going for anthracite grey RAL

Thanks man will do

Hi chaps I just got some dark grey undercoat from bnq and have done my backdoor both sides its a nice color but I didnt know they gave me just undercoat lol, so I now need a good dark grey satin paint to finish, (the same color they are doing on new builds windows). The undercoat I have used is...

Hi chaps I just got some dark grey undercoat from bnq and have done my backdoor both sides its a nice color but I didnt know they gave me just undercoat lol, so I now need a good dark grey satin paint to finish, (the same color they are doing on new builds windows). The undercoat I have used is...

Thanks Ken I will do

Thanks man