thermal building regs for tri-fold doors

[nottsrob184]

Hi all.
I am building a rear single storey extension to form a kitchen and seperate dining room.
My wife wants full length tri-fold doors in each room but i am not sure what the regulations are for thermal retention (are there any)?.
Can i buy from places like B&Q and be sure that the double glazed units meet the thermal "U" value?

Can anyone make it clear to a simpleton.

 

[freddiemercurystwin]

There are most definitely regulations for thermal retention for windows.

Provided when you buy your chosen doors/windows you have something that states the U value is no worse than 1.8W/m2K they should be accepted by Building Control.

However if the total area of glazing/doors to your new extension is in excess of 25% of the floor area of the extension you may need to get SAP calcs produced.

If you're doing this on a Notice you are advised to familiarise yourself with the Building Regulations.

 

[JoeMar]

hi

Wickes are currently doing 15% off all folding slidding doors and they are Part L compliant.

Better hurry the deal ends tomorrow (according to their website)

Joe

 

[JoeMar]

There are most definitely regulations for thermal retention for windows.

...you are advised to familiarise yourself with the Building Regulations.

Freddy, in my experience (last Sunday morning) that is never a good idea.

i've decided to let the professional deal with the regs

:

 

[DevilDamo]

Freddy said to "familiarise" yourselves with them... not to completely understand, interpret and implement them.

 

[mikric]

New part L out later this year and looks like u-value requirements for all elements are to be hiked up by around 25%

 

[freddiemercurystwin]

Oh Joy!

 

[mikric]

Along with new parts F and J, have you had any dealings with new part G water efficiency yet FMT !!!! What a nightmare
Oh back on topic , watch some of the sheds products they sometimes can be deceiving, a favorite one at one time was selling upvc windows/patio doors without trickle vents fitted which caused lots of DIY window fit problems.

 

[freddiemercurystwin]

Along with new parts F and J, have you had any dealings with new part G water efficiency yet FMT !!!! What a nightmare

No some bedtime reading to be done there I daresay! Can't Wait!

 

[DevilDamo]

Oh it's great fun... isn't it... not. Us designers have to get to grips with the revisions, etc... but Building Control have more to check/approve AND nobody gets paid anymore for doing it

 

[noseall]

I would imagine that the relationship betwixt a designer/architect/techy and building regulations, is pretty dynamic to say the least!

Being a builder is no easier believe me!

 

[DevilDamo]

But a builder will only go with what's drawn/specified