Hi,
Would appreciate your advice on the amount of insulation i should be installing in the roof.
Long story but its a flat roof and is constructed using 4x2 with 4 - 0inch firings ontop and osb3 ontop of that and finished with resin.
I'm not sure if 50mm insulation is enough or should i be installing 100mm?
My only concern is at the lower end when the firring starts to narrow down... if i used 100mm insulation it may block up air circulation .
Your advice would be most appreacited.
Thanks in advance.
Would appreciate your advice on the amount of insulation i should be installing in the roof.
Long story but its a flat roof and is constructed using 4x2 with 4 - 0inch firings ontop and osb3 ontop of that and finished with resin.
I'm not sure if 50mm insulation is enough or should i be installing 100mm?
My only concern is at the lower end when the firring starts to narrow down... if i used 100mm insulation it may block up air circulation .
Your advice would be most appreacited.
Thanks in advance.