Efflorescence, not loads you can do, other than sweep with a stiff brush, and wait.

[Phil44]

[automerge]1583708586[/automerge]

 

[CJ]

Efflorescence, not loads you can do, other than sweep with a stiff brush, and wait.

 

[Dave]

What sealer was used ? , and how soon after bedding the slabs was it sealed and has it rained within 72 hrs of sealing.

 

[Phil44]

Hi it was sealed 1 year after being laid had 24 hours dry time after pressure washed seal was nexus 420 Pro cheers
[automerge]1583865421[/automerge]

Hi it was sealed 1 year after being laid had 24 hours dry time after pressure washed seal was nexus 420 Pro cheers

No rain did have frost but slabs were covered

 

[Old Mod]

It looks like it has ‘Bloomed’, trapped moisture.
sealing 24hrs after a jet wash is too soon, it won’t have dried sufficiently.
Contact this company and speak with Bob, he’s your man.

 

[Dave]

Yes , as above looks like it has bloomed , it can happen with Topical type sealers as they trap moisture.

 

[Dumbo]

To be honest i wouldnt of even attempted to reseal out door stone this time of year ,

 

[Phil44]

Thanks guys so do need to remove the seal and re apply in summer