DIY Doctor

Main navigation

what do i fill this gap with

Postby torchy663 » Thu Sep 29, 2011 3:09 pm


inside the fireplace, there's a gap between the mantle and the chimney of about 2" wide and 30" long

when the previous house owner fitted a mantle and marble back for a gas fire he didn't fill this gap in

B Gas have now told me its unsafe and disconnected he fire as gases can escape behind the mantle and into the living room

question have is what can i fill this gap with, foam, mineral wool, some insulation material, what?

its really awkward to get to, I have to lie on my back with my head in the fireplace so i can look up and do the job
Rank: Apprentice
Progress to next rank:
Posts: 5
Joined: Thu Sep 29, 2011 1:12 pm


Gorilla Glue heavy duty grab adhesive

Postby welsh brickie » Thu Sep 29, 2011 8:43 pm

you can either use a fireproof foam,or fill the gap with expanding metal and sand,lime,cement.
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