Most suitable insulation type

jeepers101

We're in the process of planning a DIY kitchen renovation and are unsure of the type of insulation to use. Its a 20 year old house and we'll be stripping the walls back to bare cavities.

I don't want to use insulated plasterboard. With that in mind, what method of insulating would be most effective and give the best (U-)value for money?

650gs

Why do you not want to use the boards ????

jeepers101

1. I've read about condensation dangers if its not done properly.

2. I don't fancy cutting out tracks for the services.

3. Won't be plastering walls, just taping joints. Just get the impression it would be more difficult to get the insulated boards to sit flush.

Casati

jeepers101 wrote: »

1. I've read about condensation dangers if its not done properly.

2. I don't fancy cutting out tracks for the services.

3. Won't be plastering walls, just taping joints. Just get the impression it would be more difficult to get the insulated boards to sit flush.

You really should skim the walls, taping and painting doesnt get a great finish and taking wall paper off can be painful. Insulted boards have the potential to really improve the comfort offered by the house. Fitting correctly isnt that hard- you will have to chase for wiring anyway if you use originally plasterboard

jeepers101

Casati wrote: »

You really should skim the walls, taping and painting doesnt get a great finish and taking wall paper off can be painful. Insulted boards have the potential to really improve the comfort offered by the house. Fitting correctly isnt that hard- you will have to chase for wiring anyway if you use originally plasterboard

Yeah I know skimming is a better job but I can't plaster. If taping is done right it looks the part.

What do you mean I'd have to chase anyway? I was under the impression that I could fix some 4x2. Install the services and fit 100mm insulation over that. Or maybe leave a 50mm gap and fit 50mm Kingspan?

whizbang

You mentioned cavities, ?

It would be better to know what type of walls you have, particularly the external walls, before deciding.

Cavity block, solid 9inch, 4inch with cavity, poured, Red Brick, etc. ???

Will all the wiring be surface mounted? in trunking ?

jeepers101

whizbang wrote: »

You mentioned cavities, ?

It would be better to know what type of walls you have, particularly the external walls, before deciding.

Cavity block, solid 9inch, 4inch with cavity, poured, Red Brick, etc. ???

Will all the wiring be surface mounted? in trunking ?

External walls are built from cavity blocks. Plastered on the outside. Dotted and dabbed on inside.

All internal plasterboard will be removed.

Wiring will be fixed to external walls in 20/25mm oval.