Floor insulation - thermal bridge

Hi All,

We have jus had an old California bungalow restumped and I am going to take advantage of this and insulate the floor. I’m going to use Bradford bats in between the joist which is straight toward - other than the small crawl space.
The question is thermal bridging, has anyone done anything to insulate the joists? A possible second layer? tape or is it just not worth it?

Thanks very much for any advice.

Is the crawl space enclosed?

Hi Berek, thanks for the reply, no the crawl space is open with around 300mm crawl space.

The timber of the joist is a pretty good insulator so the 'cold bridge' effect is going to be low.

Have you thought about how you are going to hold the batts in place?

A easier option may be nailing foil board to the uderside of the joists, rather than batts

Wouldnt be held by something like: https://youtu.be/fIKCNPKI0AI

This is exactly what I have seen and will use the metal screw in clips. I can’t imagine the stick on options last anywhere near as long

Hi there, thank you for your reply. I am going to use the method in the reply below. I am just thinking of possibly adding a second layer of board rather than bats to prevent the bridging