Sorry, Sorry, Sorry
This may be hidden somewhere.... but I cant find the answer!!
I am going to replace my loft insulation and board loft.
Its a traditional trussles style loft so in theory 3 parts.... The centre one I will board. The joists are 100mm deep so I plan to insulate outer parts with 100mm roll in direction of joists then 90degrees with 170mm. In the centre part I will 100mm in joist direction then 90degrees with 2"x2" at width of loft boards. Oh yeah the question...
Should I then go with 50mm roll and place 18mm boards over or leave a 50mm ventilation gap and just board??? Joists are 560mm apart. The 2" batten I guess will help spread load of boxes, suitcases and other junk!
Really appreciate the help.
Get them bills down!
This may be hidden somewhere.... but I cant find the answer!!
I am going to replace my loft insulation and board loft.
Its a traditional trussles style loft so in theory 3 parts.... The centre one I will board. The joists are 100mm deep so I plan to insulate outer parts with 100mm roll in direction of joists then 90degrees with 170mm. In the centre part I will 100mm in joist direction then 90degrees with 2"x2" at width of loft boards. Oh yeah the question...
Should I then go with 50mm roll and place 18mm boards over or leave a 50mm ventilation gap and just board??? Joists are 560mm apart. The 2" batten I guess will help spread load of boxes, suitcases and other junk!
Really appreciate the help.
Get them bills down!