Graveyard pics. What would you recommend?

[dieseldad97]

My inlaws were asking me to try and clean a few of our family's gravesites. I'm thinking of starting off with a h/w mix first. If that does nothing, I've got a few chems from Bob that may do it. Anyone have any suggestions for me? Thanks.

 

[IndyExterior]

Looks like lichen and algae to me. Start with your HW and go stronger. But you'll probably end up with a bucket of straight 12.% SH and a 2" paint roller. Wet the grass around it. Just let it evaporate. Maybe a little PW rinse after plenty of dwell time. We've cleaned several. Never charged for one.

 

[Scott Stone]

Acid will remove that stuff. Use the minimum amount you can, preferably phosphoric.

 

[dieseldad97]

Thanks for the reply guys. Looks like tonight I'm goning over to wash them. My plan is 12.5 straight in a pump up then a rinse. Of course I'll try a strong h/w mix first.
Anyone have anything else to say? Thanks.

 

[dieseldad97]

Not alot of help on this one, but I'll post my finished pics for Rick and Scott. The concrete is still wet so it's not as white as it will be in a day or two.

 

[bears]

Looks good.

 

[dieseldad97]

Thanks Carey. I appreciate it.