best energy saving retrofit advice?

66chorisia

I have a 4 level victorian semi(5 bedsits and my flat) have internaly dry lined,DIY triple glazed the next step to save energy isnt easy to decide and will be expensive,the law of diminishing returns for what I do next very much applies. We heat with balanced flue gas wall heaters and 2 brittony gas multipoint water heaters,central heating change doesnt seem a cost effective change. Already have PV panels. I would like someone to advise,I am in Ipswich and will pay for informed energy advice,with capital earning abysmal interest should be options?.

macman

With all that lot already it is indeed diminishing returns-I assume the loft is fully insulated too? Solar hot water does not seem appropriate.

reeac

If the walls, roof and windows are well insulated that pretty much just leaves the ground floor. Is it suspended timber? If so then underfloor insulation ,which is awkward to install unless you have a cellar, or thick carpets/rugs. If it's a solid floor then it's thick cork and or carpets. I assume that the doors are draught-proofed.

Ken68

Hi 66...just been looking at an exterior insulated 4 bed detached house. Basically Celotex wrapped all round with the necessary retainers, then nylon mesh and then render. Good report from the owner but not cost effective. Wetherby were the installers.
http://www.energysavingtrust.org.uk/Home-improvements-and-products/Home-insulation-glazing/Solid-wall-insulation
Lots of info Google "exterior insulation".
Also I have polystyrene shutters on the outside of my downstairs windows, time consuming fitting and removing each day, so depends what your time is worth. Cost £20 initially and reckon it saves £60 a year.
And suspended floor insulation is DIYable.

Owain_Moneysaver

With individual gas wall heaters you won't have true thermostatic control.

It might be worth buying a few thermometers and seeing how warm your house actually is, and whether you can just use the heating a bit less.

Not leaving things on standby also costs nothing to do.

You might want to consider heat recovery ventilation if you have space for some duct (old chimney flues).

Ken68

5 Bedsits, meaning 5 gas certificates per year.

Ken68

Owain_Moneysaver wrote: »

With individual gas wall heaters you won't have true thermostatic control.

It might be worth buying a few thermometers and seeing how warm your house actually is, and whether you can just use the heating a bit less.

Not leaving things on standby also costs nothing to do.

You might want to consider heat recovery ventilation if you have space for some duct (old chimney flues).

http://ecorenovator.org/forum/solar-heating/1125-using-attic-heat-house.html

KFiskPlumbingandHeating

air to air heat pumps could be a good idea, especially if you have pv