AIB or Wood?!

[ShortyK]

Hey folks, I know i'll have to get it tested to really know for sure, it's a 1970 house, the garage is integral and has a room (and flat roof) above it - I've just assumed it's AIB (people have drilled into it to put pipes in the past before our ownership) but it's so hollow sounding, and really looks like painted wood! (Although one of the pics, with the pipe, looks like fibre right through it).
It's nailed up too - anyone seen anything / had anything similar and had it tested?

 

[23vc]

Plasterboard/cement board/asbestos. Gut feel is not plasterboard as the paper face tends to go brown over the years, and just looks more like cement/aib type thing to me. If plasterboard, inside bit might feel fairly soft/chalky compared to cement/aib.

Nails were dead common until whenever people used cordless/auto feed screwdrivers more.

 

[endecotp]

Get it tested - but it looks like plasterboard to me.

 

[^woody^]

If the surfaces are paper, or if in unpainted areas the surfaces are a different colour to the edges, then it's plasterboard.

 

[catlad]

Looks like fireproof cement board to me.