Replace wood floor with concrete?

[laurahiddleston]

Hi all,
I have ripped up all the wooden floor in an old terraced house which was badly affected with dry rot and would like to replace it with a concrete floor.
Firstly, can anyone tell me do I need planning permission before going ahead with the work?
Then, if I go down the root of building regulations, what other things will they insist i do? ie will they make me insulate all exterior walls? etc... (I know insulation makes things warmer, but these types of houses where constructed to be able to breath, and Im not convinced that wall insulation doesnt come without any problems)
Thanks

 

[IT Minion]

Hi all,
I have ripped up all the wooden floor in an old terraced house which was badly affected with dry rot and would like to replace it with a concrete floor.
Firstly, can anyone tell me do I need planning permission before going ahead with the work?

Nope. Planning permission is mostly interested in what is built, not how. Assuming your terraced house isn't listed.

Then, if I go down the root of building regulations, what other things will they insist i do? ie will they make me insulate all exterior walls? etc... (I know insulation makes things warmer, but these types of houses where constructed to be able to breath, and Im not convinced that wall insulation doesnt come without any problems)
Thanks

Building regs will only be interested in anything you're changing. Since you're doing the floor they will care about that. The gotcha is that if you were only planning on doing half of the ground floor, they can and might insist on you doing all of it.

Unless you're doing something drastic to the walls (more than just replastering) [edit: Fruitbunn below has a correction] then they won't care about them.

I'm in the insulate everything camp, which is not universal. But with terraced houses its less needful of insulation as two sides are effectively perfect insulators. On the other hand that also means you need half the materials...

 

[frutbunn]

As stated the work does not need planning permission, B Regs is required, ideally you need to achieve a U value of 0.3, however there is some discretion in the approved document, as to what is practical. There is no requirement to upgrade the walls due to this work.
The statement "more than just replastering" is incorrect this would require B regs and upgrading of insulation. Re skimming over the existing plaster would not require B regs.
This is how I would deal with it as did the last two authorities I worked,no doubt someone is going to point out that thats just your opinion!

 

[sxturbo]

these types of houses where constructed to be able to breath, and Im not convinced that wall insulation doesnt come without any problems

this..

will filling in the floor have a direct effect on the rest of the terrace?

 

[JP_]

I thought about filling my 1930s floors with concrete, but instead just replacing rotten joists and insulating between them, and the walls. I'm using Kingspan insulation with foil vapour barriers, so nothing breathes from in to out, but windows have trickle vents and bathrooms have extractor fans.