Gaz1892a

Thanks for the reply guys, Is there a special tape for taping it? Good tip with the 100 and 50, makes life easier 🙂 What about the weep vents below DPC in the engineering bricks?

Good Morning, So I'm doing a big project on my house and just about to put the slab in. Ive got room to put 150mm insulation in even though only 100mm has been specified by the engineers. my question is : - a - is it worth the extra 50mm on the insulation and will it make a difference? b - what does everyone use? Jabolite or celotex or similar? Thanks in advance Also one final question - ive got 3 course of engineering up to dpc, does anyone put weep vents in for airflow in the cavity? they've not been specified but how an earth does the cavity dry out if moisture gets in? Cheers Gaz