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could somebody please tell me what u-value i could get in a wall made up of render-100mm dense block-150mm rockwool energysver-100mm dense block -38mm polyurethene comp. board. i noticed the rockwool energy saver mentioned a few times and would love to know what sort of performance i could expect from it. also what u-value without the comp. board.
if it could reach anywhere near what 100mm polyiso with 38mm comp. board (0.15) then the rockwool has to be a better product as its garunteed not to let water through or reduce u-value over the years also no thermal looping
if it could reach anywhere near what 100mm polyiso with 38mm comp. board (0.15) then the rockwool has to be a better product as its garunteed not to let water through or reduce u-value over the years also no thermal looping