DIY Doctor

Loft insulation

Postby JHJS » Wed Oct 03, 2012 11:59 pm

I want to increase the depth of my loft insulation to 270mm, however, when I've looked at what's already there, it appears that the joists are 2 and a half inches deep with 2 inches of insulation laid between them. Everything I've read suggests that joists are always 4in deep? Do I need to raise the level of the joists, or can I put 4in insulation between the joists and then more at right angles across it? Would I be better leaving the original insulation or replacing it?
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Wed Oct 03, 2012 11:37 pm


Simply Build It

Postby welsh brickie » Thu Oct 04, 2012 3:04 pm

2 inch deep joists ? anyway lay the insuation ontop and across the joists leave in whats there.
welsh brickie
Rank: Project Manager
Posts: 2611
Joined: Sat Apr 12, 2008 7:54 am

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics