House built late 60's early 70's....lifted floor board in ground floor room to see if space to run new heating pipes as current ones are all exposed along the inside walls (Ex local authority property) Looking for help identifying whatever this infill is? Looks very similar to breeze block material, it's hard but easily broken apart, like some sort of cheap concrete mix. Anyone seen anything like this before? Is it dodgy? Should I just replace the board and forget it? Any help appreciated.
Infill Between Ground Floor Joists?
- Thread starter Alnic
- Start date
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That looks like block and beam to me.
Pretty standard method of construction. Should be fine
Edit: although usually has a screed over it I think?
Pretty standard method of construction. Should be fine
Edit: although usually has a screed over it I think?
Last edited:
Looks similar to a fibolite block
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Vermiculite infill.
That crossed my mind but never seen one with timber beams? I'll lift another couple of boards and check, the material is definitely similar to fibolite but seems even lighter or less hard than those.
The kitchen, hall and downstairs toilet have concrete screed over the floors but the two downstairs reception rooms have this, the material seems as though it has been almost poured/levelled in between the timbers but I'll definitely check for edges of blocks, if it has been screeded in I'm worried about the state of the timber after 60yrs assuming this is cement based.
We got the house insanely cheap as it needs completely renovated, same guy lived in it since it was built for the council and other than a small kitchen extension in the 80's and oild heating did nothing to it. We are gutting it, rewiring, replumbing etc and i'd like to hide all the CH pipes as they currently just run along the inside brick walls. It's clear of asbestos with none to be found anywhere other than a single piece of lagging left on one of the original heating pipes in the loft but when i lifted the downstairs boards and saw this i was stumped I had assumed it was just concrete underneath like the rest of the rooms.
See the post above yours.
It didnt seem to have the 'spongy' look of vermiculite but I'm far from an expert, if it is, in a property that age best just to cover it up and leave it? Read somewhere than a lot of old vermiculite can contain asbestos.
Ah, ok. Not sure what it is then. I have seen timber joists that have been shuttered from below and filled with concrete to give a finished floor surface, on a first floor location. This was a very old property though.
Looks similar to limestone chippings.
Just had a text from a mate who thinks it looks like perlite concrete, had a look at some images and looks the closest so far. If I can't identify it properly i'll just leave it untouched it's causing no harm where it is.
Cheers folks.
Ah, missed that they were wooden joists.
Should stop offering DIY advice after too many pints!
Should stop offering DIY advice after too many pints!
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