Cleaning Expansion Joint

[joesc230]

Hi all,

Anyone have a recommendation on what I can use to clean the (self-leveling) caulk inside my pool's expansion joint? Seems like it's gotten moldy over the past year. Water and wiping didn't get rid of it all. Should I just use whatever is recommended to clean bathroom and kitchen caulk?

Here's a picture of what I mean:

 

[Arizonarob]

Have you tried pressure washing it?

 

[JamesW]

Maybe an outdoor furniture cleaner that contains Alkyl dimethyl benzyl ammonium chloride.

Bleach-Free, No Scrub Mold & Mildew, Moss & Algae Cleaner | Wet & Forget

 

[joesc230]

Maybe an outdoor furniture cleaner that contains Alkyl dimethyl benzyl ammonium chloride.

Bleach-Free, No Scrub Mold & Mildew, Moss & Algae Cleaner | Wet & Forget

Thanks for the recommendation! I'll give it a shot.

 

[tstex]

if outdoors and the caulk was not painted, the mold most like has penetrated the caulk itself...use the strongest you can w bleach as the primary component, as long as it does not have an adverse impact on your stones. If that does not work to your satisfaction, best thing to do is pull it up and replace w a caulk that best matches your stones, and go a shade darker... good luck...