Roof Insulation

Hi All

Before I embark on installing insulation into my ceiling I thought it best to seek comment first.

I own and live on the 3rd floor which is the top and have access to the ceiling cavity above my unit – common property. There is sarking attached to the rafters behind the tiles however the ceiling cavity gets very hot and this comes through to the dwelling.

I also have air condition and the electricity bill shock has prompted action.

The plan is to install the insulation batts myself purchased from Bunnings.

Do I need to seek executive committee approval to do this?

Is it possible the cost could be covered by a strata fund? Long shot…

Many thanks

Alex