Block paving sinking in parts

Keeping_Motivated

I have a drive block paved in the grey tegular (I think it is called that anyway).
Anyway in certain parts it has sunk slightly and I was wondering what the cost would be of taking it up and having it relayed? Do they charge so much per metre for the labour? I am assuming the same blocks can be reused?

Thanks

adaze

Sounds like they were poorly laid in the first place. How long ago was the drive done? You should be able to remove the ones that have sunk and reinstate underneath, but it does depend why they have sunk in the first place, you may need to go back to formation level and start again with the sunken areas.

phill99

Have you been pasrking a vehicle on it? This may cause it to sink particularly if a DOT 'Type 2' sub base hasn't been used.

BTB1_2

It sounds like the sub base is insufficient.

Take a few blocks up, dig through the grit sand layer (should be 30-40mm deep) and you should find 200mm of Class 1 MOT.

Any less and you will always have problems (just in different places).

Hope this helps