Concerned: Crack between tile and pool deck

[AZMadChris]

So I’ve been keeping my water perfect from outside the pool. Just got in today and noticed a larger crack at the top of the tile area and pool deck. I honestly don’t know if it was there last year. Is this bad? Can I seal it myself? New pool owner of around 3 years so not sure. Any help appreciated.

 

[duraleigh]

Good pics! Almost certainly, your decking is settling in the back. That causes the cantilevered portion of you deck to lift off the bond beam.

Probable cause is settling of the substrate under your deck because it was not compacted well before decking was poured.

You can certainly recaulk and that may last a while (that's what I would do) but it will likely reappear if the decking settles more.

 

[Rancho Cost-a-Lotta]

I have a cantilever deck as well. On my pool, the pool builder used clear silicone to seal the gap. It provides a bit of flex as opposed to grout.

 

[AZMadChris]

Great, thank you for the info. I’ll recaulk for now and keep an eye on it. Thanks again!