Insulation

[Manxcat54]

Would boat builders be using spray foam back in 1979

[Tony Brooks]

I would say unlikely. Expanded polystyrene if you are lucky.

[Ronaldo47]

Spray foam for cavity wall insulation was in use by the mid-1970's. A work colleague who was into model railways, got a friend who was in the wall insulation business to come round and use his foam apparatus to make him embankments and other scenery. I Ieft that job in 1976, and had no further contact with the colleague, so it must have been earlier than that. 

Edited January 26 by Ronaldo47
typos

[Tracy D'arth]

11 minutes ago, Tony Brooks said:

I would say unlikely. Expanded polystyrene if you are lucky.

Or glass fibre or rockwool most likely. Not seen any foam till the '80s,

3 minutes ago, Ronaldo47 said:

Spray foam for cavity wall insulation was in use by the mid-1970's. A work colleague who was into model railways, got a friend who was in the wall insulation business to come round and use his foam.apparatus to make him embankments and other scenery. 

And it went out of use fast after they had cavity walls burst. Now the use polystyrene beads in sticky stuff, safer.

Edited January 26 by Tracy D'arth

[MtB]

1 hour ago, Tracy D'arth said:

Now the use polystyrene beads in sticky stuff, safer.

 

They don't always bother with the sticky stuff. Just the beads.

 

DAMHIK.

 

 

[Sea Dog]

39 minutes ago, MtB said:

 

They don't always bother with the sticky stuff. Just the beads.

 

DAMHIK.

 

 

Some of us don't need to AYHYK! Perhaps there's a little something in it for the installer from not using enough sticky stuff?