[scsiguru]

My driveway has gaps between the slabs that are in some cases up to 1” wide (see photo) and get a lot of grass growing up in them. I was thinking of putting some closed cell backer rods in the gaps and then caulking over the rods with self leveling sealant. Will this be the best way to full in the gaps or should I approach it differently?

 

[Windows on Wash]

Leveling cement won't work. Just pull the grass/weeds out. If you want to seal it you could try some backer and flexible urethane sealant. Here is what I will say...it will fail and pull away.

 

[scsiguru]

Leveling cement won't work. Just pull the grass/weeds out. If you want to seal it you could try some backer and flexible urethane sealant. Here is what I will say...it will fail and pull away.

Thanks!! Will just leave it as it..cutting it out and pulling it only takes around 1/2 about twice a year.

 

[scsiguru]

Just curious...what about something like this?


Sikaflex Self-Leveling Sealant, 10.1 fl. oz Cartridge, Gray https://www.amazon.com/dp/B000KKOO5M/ref=cm_sw_r_cp_api_i_BkWVEbXWZ4TXM

 

[huesmann]

Pour salt in the crack a couple times a year.

 

[tribe_fan]

My first vote is leaving it alone too.



I have had good luck using polymeric sand. (first filling the crack with regular sand to about 1/2 - 3/4 inch because polymeric is expensive.