How to repair cracked concrete driveway?

[davedave]

Hi, I have some long cracks in my driveway - are these suitable to fix myself and if so what products? Or would I be better paying someone to do the job?

[approachmhn]

Thanks @EricL. will do the sealing as suggested.

Good evening @Dave-1,

I did check around before confirming that the leak is from sealant.

i observed leak last august, and then sealed it. There was no leak after that till this November beginning. 

It was hot from last 2 weeks with no rain. Might be the sealant is cracking and giving up space for water to seep in.