The Brew Cabin

Posted: **Mon Feb 26, 2018 12:03 pm**

Hi,

I've been searching like crazy all morning to try and find out what these sort of damp patches are on a new slab paving laid.

I'm sorry, I don't know the technical details or how best to describe so please bear with me. After searching the internet, I thought it could be this 'bed spotting' - but I watched the guys lay it and they didn't do it like that. The used a mix or type 1 and sand, levelled then laid. I'm sure there is a more technical term but I don't know. I asked the landscaper and he said it'll weather in. He has a good reputation hence I'm disappointed in this this appearance. Any help would be appreciated and thanks in advance. JC

JC

Posted: **Mon Feb 26, 2018 12:08 pm**

That looks like differential curing - it's a problem with some concrete flags, and while it often does disappear, it can take a season or longer, and it sometimes doesn't shift at all.

There's a FAQ that may help.....

Posted: **Mon Feb 26, 2018 12:17 pm**

Tony McC wrote:That looks like differential curing - it's a problem with some concrete flags, and while it often does disappear, it can take a season or longer, and it sometimes doesn't shift at all.

There's a FAQ that may help.....

Hi Tony, thanks for the reply and link. Hmmm, yes it does look like it.

So, there's nothing I can really do as not his fault then? Bizarre, as when they went down all looked good - it was only once wet, cold, cleaned etc.. that this happened.

I even had a heater out on one slab last night, to the neighbours amusement I'm sure..

Posted: **Thu Mar 01, 2018 9:55 am**

It's not the fault of the installer, but, if they supplied the paving, then they will have to take it up with *their* supplier, and so on up the food chain until it reaches the manufacturer who *may* decide to send out a rep.

The Brew Cabin

Damp patches - Damp patches on paving