Hi,
Just planning some much needed repairs and upgrades to my 1920's end terrace house.
Sometime in the 1970's they added a kitchen and bathroom by putting a smaller extension on the rear of the property.
There is also a conservatory that had later again been built between the kitchen and the next door property.
The house was double glazed about 20 years ago.
All shown in the attached images.
Both the kitchen and bathroom suffer badly with cold and condensation (mainly in the winter) and due to the already small area of the bathroom, I was considering cladding and insulating externally only on the upper section of the extension.
Before I do I need to work out if this will actually be cost effective - e.g. will it make a big difference.
I believe that as this will change the appearance of the house I will need planning permission.
I had also considered doing the same cladding around the entire upper perimeter of main house as well?
The other (cheaper) option would be to refit the bathroom, by removing the internal stud walls to make one larger area, the space gained by losing the dividing wall will partially offset insulating internally by battening, fitting PIR between the battens and then lining with a moisture resistent plasterboard.
The rear of the property (which is shown in the images) is South facing, the end of terrace side is west facing and gets battered in the winter by Atlantic Westerly Winds.
I am pretty sure most of my heating goes out through the kitchen and bathroom as well as up out of the attic.
Some more information:
The kitchen does not have any heating and has a Range Cooker and Hob/ Extractor and an addition manual extractor, there is an internal wooden door between the kitchen and the house and another internal wooden stable type door into the conservatory (which in the summer months is the most used part of the house.
There is a gas CH radiator in the bathroom area however the bathroom and toilet are both separated with a stud wall and the radiator is in a small coridoor outside the toilet and bathroom. Both the bathoom and toilet have doors, but there is no door into the main entrance to these areas. The airing cupboard housing an old British Gas fitted Worcester Bosch Combi bolier is in a cupboard also in the small entrance area.Plan attached.
The attic has appox 200mm Rockwall (with a few areas having less), I had partially boarded it many years ago but never finished.
When we had the roof renewed we asked the roofer to line the rafters with insulation and board the rafters. TBH we should have had a proper job done because they did a bad job IMHO. I asked them to use a PIR insulation, but they opted to use HYBRIS HC90C-UK (which I cannot find online now), It came in rolls as opposed to slabs.
Any advice on which COA might be best, external or internal insulation?
Just planning some much needed repairs and upgrades to my 1920's end terrace house.
Sometime in the 1970's they added a kitchen and bathroom by putting a smaller extension on the rear of the property.
There is also a conservatory that had later again been built between the kitchen and the next door property.
The house was double glazed about 20 years ago.
All shown in the attached images.
Both the kitchen and bathroom suffer badly with cold and condensation (mainly in the winter) and due to the already small area of the bathroom, I was considering cladding and insulating externally only on the upper section of the extension.
Before I do I need to work out if this will actually be cost effective - e.g. will it make a big difference.
I believe that as this will change the appearance of the house I will need planning permission.
I had also considered doing the same cladding around the entire upper perimeter of main house as well?
The other (cheaper) option would be to refit the bathroom, by removing the internal stud walls to make one larger area, the space gained by losing the dividing wall will partially offset insulating internally by battening, fitting PIR between the battens and then lining with a moisture resistent plasterboard.
The rear of the property (which is shown in the images) is South facing, the end of terrace side is west facing and gets battered in the winter by Atlantic Westerly Winds.
I am pretty sure most of my heating goes out through the kitchen and bathroom as well as up out of the attic.
Some more information:
The kitchen does not have any heating and has a Range Cooker and Hob/ Extractor and an addition manual extractor, there is an internal wooden door between the kitchen and the house and another internal wooden stable type door into the conservatory (which in the summer months is the most used part of the house.
There is a gas CH radiator in the bathroom area however the bathroom and toilet are both separated with a stud wall and the radiator is in a small coridoor outside the toilet and bathroom. Both the bathoom and toilet have doors, but there is no door into the main entrance to these areas. The airing cupboard housing an old British Gas fitted Worcester Bosch Combi bolier is in a cupboard also in the small entrance area.Plan attached.
The attic has appox 200mm Rockwall (with a few areas having less), I had partially boarded it many years ago but never finished.
When we had the roof renewed we asked the roofer to line the rafters with insulation and board the rafters. TBH we should have had a proper job done because they did a bad job IMHO. I asked them to use a PIR insulation, but they opted to use HYBRIS HC90C-UK (which I cannot find online now), It came in rolls as opposed to slabs.
Any advice on which COA might be best, external or internal insulation?
