crumbly concrete and bitumen.

[gaz_moose]

I have been ripping a kitchen out for someone and knocked all the floor tiles off today. the plan is to eventually install LVT throughout.

I'm currently left with a concrete slab that has the current issues,

craters from me bashing it.

some bits are weak and crumbly.

some bits have bitumen still down

some bits have white asbestos floor tile stuck down ( these bits are 2mm higher than the rest and the tiles are basically welded on).

 

My plan of action was to slap a load of concrete hardener down as i have a load spare then pour some leveller down. But then i think i should do something to replicate what the old bitumen was for which leaves me a bit stumped.

 

So..

 

should i go for

concrete hardener

a coat of SBR

leveller. I was just going to use the 'just add water' screwfix mapi stuff. 

 

Or is there a much better option?, One that wont cost the earth or take ages 🤣. the job is just a favour and they don't even have decent biscuits.

 

 

 

 

[Mike]

1 hour ago, gaz_moose said:

some bits have white asbestos floor tile stuck down ( these bits are 2mm higher than the rest and the tiles are basically welded on)

It's not ethical and probably illegal to leave any behind encased in something else that a future builder won't expect to contain asbestos. Bring in a licensed asbestos removal company to remove them and any remaining adhesive, and to decontaminate the space.

 

Also check out the Control of Asbestos Regulations 2012 & the associated guide, which contains this:

 

 

NNLW = Notifiable Non-Licensed Work

 

Edited Saturday at 20:20 by Mike

[gaz_moose]

i get what you are saying but these are properly stuck down. the only way im going to get them up is to either sand them off or grind them off or just smash off the concrete underneath which will just make loads of dangerous dust. there is literally about 1m^2 left the rest have been blasted off years ago by someone else.

 

every house round these parts basically have white or brown asbestos floor tiles, its just how it is.

[Alan Ambrose]

>>> replicate what the old bitumen was for

 

What’s your best guess - was this a DPM?

[BadgerBodger]

Encapsulation is an acceptable strategy so long as there is an adequate record maintained of its location, encapsulation, asbestos type etc. 

 

This record would then need disclosing to any future buyers etc. 

 

Read up on it, and make your own discussion. This came up a couple of months ago and the general consensus was that work falling outside NNLW was pretty affordable and discharging the ongoing risk/responsibility was worth the squeeze. 
 

Just one note, if the asbestos tiles were bonded with bitumen there is a good chance that if tested, that bitumen would test positive for chrysotile too. It was also bound within the bitumen around that time too.