I would like to insulate behind the present drylining of a 1920s single brick external wall (with external rendering). Can this be done? How? Also, how can I insulate under the suspended floorboards where there is about 70cm drop to a gravel/stone/soil surface.
-
Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.
insulate behind existing drylining
- Thread starter darylanne
- Start date
Some insulation firms will fill voids behind plasterboard but it's full of pitfalls, fouling cables etc it also requires relatively large holes to be cut in your plasterboard to blow it in. Also you may not have a vapour barrier and could get condensation problems. Sorry its so gloomy.
The best option would be to pull off the plasterboard fix celotex type insulation and re fit the boards and then either tape and joint it or skim it properly which is far superior in my opinion.
As for the floor it can easily be done from underneath if you have that much room although it's not a particularly pleasent job. You can use the same rigid board type or you can use mineral wool but it needs netting etc to hold it in place.
The best option would be to pull off the plasterboard fix celotex type insulation and re fit the boards and then either tape and joint it or skim it properly which is far superior in my opinion.
As for the floor it can easily be done from underneath if you have that much room although it's not a particularly pleasent job. You can use the same rigid board type or you can use mineral wool but it needs netting etc to hold it in place.
http://www.planningportal.gov.uk/pe...#Thermalresistanceandchangestothermalelements
"Making significant changes to thermal elements (walls ,roofs or floors) would normally require Building Regulations approval and require the thermal insulation of the element to be upgraded to a reasonable standard."
http://www.planningportal.gov.uk/bu...ionoffuelandpowerExistingdwellings2010edition
http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2010.pdf Table 3
"Making significant changes to thermal elements (walls ,roofs or floors) would normally require Building Regulations approval and require the thermal insulation of the element to be upgraded to a reasonable standard."
http://www.planningportal.gov.uk/bu...ionoffuelandpowerExistingdwellings2010edition
http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2010.pdf Table 3
For a solid brick wall, you' re looking at about 70mm PIR (Celotex GA4000 or Kingspan K18)
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
