Garage conversion

[catlad]

Can someone tell me what the current u.values of a suspended timber floor is these days,
Would 100mm celotex between the joist and 18mm osb be enough? Cheers

 

[DevilDamo]

0.22 for a new ground floor or 0.25 for upgrading a ground floor, which I assume you’re referring to for a garage conversion? Use Celotex’s online u-value calculator to determine the build up as you’ll need the P/A figure too.

 

[^woody^]

You need to "try" to achieve the stated u-values for refurb work, but sometimes it's not possible - 0.25 W/(m2.K) for conversions. 100 celotex will be enough though

BTW, do garage conversions need building regulations? Asking for a non-BCO friend

 

[DevilDamo]

Yes you do. Wait... no you don’t. Wait... yes you should, but no not in theory as it doesn’t come under Regulation 6.3.y.h.7.9.5.z dated 1948

 

[catlad]

Thanks guys for the replies. I have been asked by a friend of the family to look into converting one of their two integral garages into an office seen as they are both working from home at the moment. I can do half of it myself and I have a friend who is a plumber another who is a plasterer and another who is an electrician so I have most of it covered. I was wondering if it needed a planning application? My first instinct was it didn't as it is already part of the property, but then I was thinking it might because I will be removing one of the garage doors and bricking it up and putting a window in, so now I'm not sure!

 

[^woody^]

Typically, conversions only need planning permission if there is a planning condition on the original or previous planning permissions, or a general area removal of permitted development rights - new estates, special areas.

 

[DevilDamo]

It’s all on the PP website...

https://www.planningportal.co.uk/info/200130/common_projects/25/garage_conversion

 

[catlad]

Thanks
I think I will ring the council and see what they say.

 

[catlad]

I called the planning dept and they said that a planning application wasn't required only building reg's approval, for which I could send in some drawings and get prior approval or submit a building notice, either way a fee of £330 was required for site visits ( photo's these days)

 

[DevilDamo]

get prior approval or submit a building notice

Prior Approval is Planning, so nothing to do with BR’s.

Your two BR options are a Full Plans or Building Notice application. The fees are usually the same but the FP application requires more information to be submitted, which goes through an approval process.

 

[^woody^]

Prior approval of the plans

If inspectors aren't inspecting, I wonder if anyone has challenged the actual site inspection fee they charge?

 

[shabbaranks]

Prior approval of the plans

If inspectors aren't inspecting, I wonder if anyone has challenged the actual site inspection fee they charge?

The term "money for old rope" springs to mind - somethings got to recoup all this furlough going out the front door