Originally Posted by Wildie
Just for the record, this thread is more than a year old and the OP has probably completed his project!
The wall only had a 3/4" cavity and the R value payback for injected insulation wouldn't make it worth while!
My present home had a 3 1/2" wall cavity and I did have cellulose insulation blown in! It would be a waste of time and money to do so with a 3/4 cavity!
I didn't notice the date as there already had been 2 replies yesterday, although it usually takes at least a year of the wife's nagging before I start a job.
I may have read it wrong but I took it that there was an air gap/cavity between the 2 wythes which was unknown in size. The type of insulation I was talking about goes into that gap. The gap needs to be at least 2 inches for a contractor to fill it.
As I understand it the 3/4 gap was between the wall and the plasterboard. I may have got this info wrong.