Tarmac - Can you?

[newquay98]

hi,being new to this can anyone tell me if block pavers can be laid on sharp sand bed straight on to tarmac drive if there is enough height at damp course etc or do you have to remove the tarmac,cheers newquay98

[surreyhillslandscapes.com]

I would remove the tarmac layer then see what sort of base you have underneath and how deep it is, if it's good and at least 150mm deep you should be fine.

[Pablo]

As above you would be crazy to lay onto tarmac I hope this is you just testing the water to see how much work is needed and not some contractors idea that has given you a quote.

[newquay98]

just me testing the ground,done quite a bit of building but no experience with pavers or tarmac lol

[Dave_L]

What condition is the tarmac in? Any cracks or signs of subsidence?

[James.Q]

if tarmac in good condition no probs all my site work ie parking areas is laid over the top of base coat tarmac. if you have required depth and tmac ok then you should be ok. why rip out good base to replace with another:p

[surreyhillslandscapes.com]

http://www.pavingexpert.com/faq_layover01.htm

[James.Q]

with age comes experiance . one day you might have it LOL

[Pablo]

I'm sorry mate but you can't compare laying on top of a thick base coat that you have seen installed to laying on top of a domestic driveway that probably is just 6mm wearcoat to full depth without a basecoat. You have no idea of the sub base or even how thick it is. Two very different tarmac bases that will act in two very different ways. Also where the tarmac meets any threshholds like roads /garages or garden paths you will have to remove it anyway to get your levels right. Your mot sub base will settle slightly which will leave a ridge in your paving. This means that you will have 2 different types of sub base which will act in different ways when stressed. And you spelt experience wrong but I'm just being picky.

[eazybarra man]

oh the gloves are off i think

[lutonlagerlout]

what you cannot see, dont trust
in my experience
LLL :;):

[Dave_L]

what you cannot see, dont trust
in my experience
LLL :;):

Well said.

We've laid pavers on top of 85mm permeable tarmac on a road before, but that was all constructed from scratch by us and directed by the highways authority.

[surreyhillslandscapes.com]

Ditto, laid paving on tarmac with Mccabe, can't really see anything wrong with it except it was very inflexable, the wacker was bouncing round like a fart in a phone box. Never seen it specified for a domestic though.

[seanandruby]

old mick Mccabe always insisted flags were laid on concrete. also the concrete was bang on for pipes and manholes, non of that dry-lean crap, you was busy but it was all top quality work.

[newquay98]

thanks for all the imput,i will probably take up tarmac as i dont know whats underneath,as someone mentioned.