Cold bathroom extension - How to make it warmer?

BaileyB

Hi,

We have an extension on the back of our house and the bathroom is in there. It's a single extension with flat roof.

Now its really cold in there, we only have a towel rad in there.

So i'm going to

Install a new double radiator.

drop the ceiling and insulate the roof, but i have had a little look as need to leave an air gap?

Can you buy better plasterboards that keep the heat in like foil back etc?

Taking the floor up and buying decent underlay for the laminate tiles. May do tiles but they are cold too, unless run under floor heating.

We have looked at cavity wall but there are no grants for extensions, would this help?

Is there anything else i can do?

dampdaveski

Bailey,
If possible use thermal boards on your ceiling and walls (appreciate walls might be difficult)
I use thermal boards and get them from minster, jewson, travis perkins
Prices vary so make sure you get a couple of quotes
FYI here's a link to minster (only because it was the easiest to find)
http://www.minsteronline.co.uk/product/gtec-thermal-board

good luck

sunshinetours

You may find a new properly specced rad will be sufficient anyway. towel radiators (chromed ladder style ones) are not really suitable for primary heat as they just as name suggests warm towels!

bluecelticgirl

I agree with Sunshine. I took out a normal radiator and installed a chrome towel rail one - looks great but no heat! Was speaking to a plumber in the shop where I bought it and he did tell me it would not be hot enough but........

llandyrnog

Before doing major work, check for draughts from poorly fitted windows, gaps round the door and also gaps were the drainage pipes go through the walls. These combined can make a room uncomfortable with a cold wind blasting through it !. Starting from the floor which you say you are going to take up, either install 100mm celotex below your new concrete slab or have your new slab lower and have say 75mm celotex with a 22mm floorboard on top with tiles or a vynil on top of that. Ceiling, take down the existing plasterboard and fix as much celotex as is possible still giving you a 50mm air gap for air to circulate, ( above the insulation !)then fix a thermal plasterboard to the underside and skim. The walls could be battened out and have as much celotex inbetween them as you can afford both in monetry terms and room size. Plasterboard and skim, or ask for a quote from a cavity insulation co to inject yuor walls. If your desperate for space you can always insulate externally by fixing celotex boards to the external face and either mesh and render or fix brick slips to match the existing.