My tarmac driveway has developed a few cracks which will allow water ingress and eventual breakdown. I want to 'fill' the cracks in some way to prevent water penetration and any detetioration. Can you suggest a repair method? I have heard of a 'cold pour' jointing compound, though this seems to be for professional usage and not a competent DIYer. Would a roofing repair compound work?

Tryharder, April 2009

Some solvent based bitumen formulas of Tarmac Restorer can be used to fill small cracks. I used Tarmac Restorer Black from Masterbuild Products and have to say it did the trick and gave the drive a better than new look and I would highly recommend it.
After more than 12 months it still looks great!!!
I bought it from Ebay, however the label says they are based in Bury, Lancs

Tom, June 2010

Thanks John, I'll look into it further - I don't need the 20 litre pail the cold pour came in so will source a smaller amount.

Tryharder, April 2009

Best to go for the cold pour treatment, I think - roofing pitch doesnt have the necessary aggregate in it to withstand the wear and tear of cars and suchlike moving across it. Wickes and B&Q should have a suitable product.

John, April 2009