Sarking was something that we'd read about but never really considered until a friend at work strongly suggested it. For a double storey house, we're going with a concrete tiled roof (black tiles) and already have R3.0 insulation going in. I've summarised a little from what I've read on the forum but have a few questions. Also, thoughts on whether it is the way to go.
- * It isn't a requirement, but will assist with insulation.
* It should stop any leaks from a cracked tile dripping onto the plaster/insulation, but will also hide a leak so it's difficult to detect and find.
* With a single bathroom exhaust fan, do we need some form of external venting? And does a whirlybird satisfy that requirement?
* We've been quoted $2000 - for the Sydney area, is this a cost worthwhile or is the insulating effect never really going to pay for itself?
* Will one or two additional whirlybirds do the same thing and hence do we need to get it?
Thanks in advance.