Best Stud Wall Insulation

Postby mikeym » Tue Aug 11, 2009 10:55 am

I`m building a dividing wall with a doorway across my integral garage to split it into two rooms, a dining room and a small storage area at the garage door end.
After a site visit the LABC officer tells me the main criteria to meet will be the thermal insulation values of the new habitable room. They cant advise what is the best material or give me any tech info re values to be acheived (at this stage).
What i`m asking here is taking into account that one end of the garage has a steel garage door, what is the best insulating material to use? How does polystyrene slab compare to the rockwool type material?
Also does anyone have any info re the best type of internal door to install for heat retention etc? I am advised that a fire door will not be necessary.
Any info appreciated.
Rank: Apprentice
Progress to next rank:
Posts: 9
Joined: Tue Aug 28, 2007 1:33 pm


Simply Build It

Postby stoneyboy » Tue Aug 11, 2009 9:51 pm

Assuming you are constructing a timber stud wall use Rockwool - your supplier will advise the thickness needed.
A fire door will give the best insulation unless you have a special made.
Rank: Project Manager
Posts: 2715
Joined: Wed Dec 10, 2008 6:44 pm

Postby eljaybee » Sun Aug 16, 2009 7:05 am

The U-vaalue that you need to achieve is 0.3W/m2K the same as for an external wall.

I recommend the use of a polyurethane insualtion (eg kingspan or celotex, the type with silver layers on surface) - it give better thermal performance compared to the same thickness of polystyrene or quilt.
Plus you don't have the possibility of the insulation slumping down which can occur with outher forms.
Rank: Ganger
Progress to next rank:
Posts: 78
Joined: Sun Jun 22, 2008 11:53 am

Postby checker » Fri Feb 12, 2010 6:03 am

Polyurethane insulating coatings offer extreme durability, which is four times stronger than traditional epoxy! It is also 98% more flexible, which means that your garage flooring finish is protected from cracking and it is even chemically resistant to salt, oil, gas and other chemicals that commonly stain garage floors.
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Fri Feb 12, 2010 5:50 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