sizing a radiator for a loft

[Mgrant]

Hi can anyone help give the correct size radiator/s or btu output require for a loft space 4.7 meters long, 5.2 meters wide, and 2.7 meters at the highest point, is a pitched roof. Thanks for any help.

 

[lame plumber]

i asked this recently but why are you heating an attic space?

 

[Ermintrude]

A massive one but don't connect pipework as your heating bills will be immense. If you have no vapour control and poor insulation start saving to replace the roof. Wet rot will eat roof in 18 months

 

[Mgrant]

The attics been converted to a bedroom a long time ago so the roof is insulated

 

[lame plumber]

fm experience of attic convertions, if the insulation is done to b regs orders, youll not need anything bigger than a matchbox to heat it! do an online search for rad sizing calcs and off you go

 

[village idiot]

A minimum of 7500BTU.
But that is just a guess as it will take a lot of heating.

 

[PlumbBobBob]

well it's not an attic then it is a bedroom in the loft. different kettle of fish. how long ago was the conversion done and did it pass building control.

 

[Mgrant]

air vents if fitting a rad in bedroom in the loft? haven't heard of this before.

 

[Mgrant]

Some online calculations are coming up with about 5000btu's sounds small to me

 

[Mgrant]

Was thinking two 600 x 600 doubles giving 7600 btu's