Hi there!
My house is 1950s-ish and I've got a large void under the ground floor. At present, I've got 50mm of sheeps wool insulation between the joists here, but having just been reading up on this, I see that this is far from adequate. However, there seems to be no consensus on exactly how much I should have. I know that even with 50mm it's probably achieving a u-value of around 0.34 (ish). Would increasing this to 100mm or even 150mm bring a huge advantage?
Putting in the above has already has already given a big increase as regards the overall feeling of warmth in the house (and, indeed, the heating is staying off for longer, too!).
Any thoughts anyone? For info, it's this stuff I've been using: http://www.blackmountaininsulation.com/index.php/products/sheeps-wool-insulation-products - the tech info says that the U value is 0.78.
Note that I'm not trying to do something mad like bring my 1950s house up to modern construction standards, just trying to stop is leaking out heat like a sieve.
Cheers
My house is 1950s-ish and I've got a large void under the ground floor. At present, I've got 50mm of sheeps wool insulation between the joists here, but having just been reading up on this, I see that this is far from adequate. However, there seems to be no consensus on exactly how much I should have. I know that even with 50mm it's probably achieving a u-value of around 0.34 (ish). Would increasing this to 100mm or even 150mm bring a huge advantage?
Putting in the above has already has already given a big increase as regards the overall feeling of warmth in the house (and, indeed, the heating is staying off for longer, too!).
Any thoughts anyone? For info, it's this stuff I've been using: http://www.blackmountaininsulation.com/index.php/products/sheeps-wool-insulation-products - the tech info says that the U value is 0.78.
Note that I'm not trying to do something mad like bring my 1950s house up to modern construction standards, just trying to stop is leaking out heat like a sieve.
Cheers