Insulating upstairs timber frame external - 1960's build

[loziv]

Hi

I am looking for some advice on what is the best insulating material to go between the timber frame structure in one of our upstairs bedrooms.

The house was built in the 60's and one section of the house (upstairs bedroom) is timber frame, clad in hanging tile to the exterior. We are taking the plasterboard down against the exterior wall tomorrow as there is signs of damp, and I am guessing that the original rockwool material is going to be behind this in between the frame of the timber frame. Will have a better idea tomorrow when the builder is here.

What would be best to replace this with Kingspan i.e. http://www.building-supplies-online...boards.html#product_tabs_description_contents or Celotex
http://www.building-supplies-online...sulation/celotex-ga4000-insulation-board.html


Also as we live near a very busy road and its noisy instead of normal plasterboard we were thinking of getting acoustic plasterboard such as Knauff Performance Plus

http://www.building-supplies-online...auf-performance-plus-plasterboard-12-5mm.html

Does this sound ok, or are there better options?

 

[cjard]

kingspan and celotex are essentially the same thing. you may find that exchanging the wool for rigid board makes your insulation better but sound proofing worse. I'd recommend you fit a vapour control membrane to the framing before you put the plasterboard back on. You might also find that, for your money, installing a double later of plasterboard is better than a sound blocking plasterboard. The key to blocking sound with thin constructions is to have different layers of different densities in a sandwich type build up. Also consider triple glazing as it's likely your efforts with the wall are only the minor slice of the pie compared to the window

 

[catlad]

There almost certainly won't be any insulation in there already so fitting celotex will automatically make it more sound proof and I would recommend you use insulated plasterboard as well.