Stained blue black granite

Beas · Post: # 111394Post **Beas** Fri Sep 16, 2016 12:08 pm

Hi,

Think I know what the answer to this is going to be but hopefully someone proves me wrong.

Recently laid some blue black granite in the garden. Was only my second attempt at paving so I was quite chuffed how level and flat I managed to get it.

Problem that I have is when laying it it started to rain on and off which made things get a bit messy. The edges of some of the slabs appear to be stained. I've tried her washing them but to no avail. I'm guessing this is stained for life now?

When it's wet you can't see them at all. If I applied a sealant do you think this would mask them? Or make it worse?

Any help/advice would be awesome!!

[IMG]http://i1234.photobucket.com/albums....MG]

Tom - Westminster Stone · Mon Sep 19, 2016 8:02 am

I have used this before with success https://www.clickcleaning.co.uk/product....YxQLUQ, i've not used on granite before, but worked well on sandstone, limestone and concrete reproductions.

Beas · Post: # 111445Post **Beas** Tue Sep 20, 2016 1:50 pm

Cheers for the reply but I probably didn't explain myself very well. Lol.
I think it is the mortar that has stained the edges of the slabs. Haven't used the patio yet.
I've got a better picture, well makes it look worse. 😞
[IMG]http://i1234.photobucket.com/albums....MG]

London Stone Paving · Mon Oct 03, 2016 8:59 am

Have these been laid on a full bed or did you just use strips of mortar round the outside of the slabs?

Steve

Mon Oct 03, 2016 10:42 pm

how big are the joints? it looks butted from here

as Steve said this kind of effect is often caused by not using a full bed of mortar
LLL

Beas · Post: # 111625Post **Beas** Fri Oct 07, 2016 3:15 pm

Joints were butted up as I wanted a contemporary style. All of them haven laid on a full bed. It's odd because it doesn't seem to be all of them? I don't mind sealing them and making the colour darker but I'm not sure this would work? Any thoughts?

DempseyLiverpool · Sat Oct 08, 2016 9:50 pm

Its not mortar staining its water your always going to have the darkening as there will always be moisture trapped in the joints with nowhere to go. Should never butt joint any paving minimum is 8mm for me. Couldn't even get kiln dried sand in those joints. How many square metres have you laid ?

Sealing won't fix it