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Posted: Sat Jun 24, 2017 12:17 pm
by Quaife Landscapes
Hi guys,
Have laid a granite job with by stone 600×900's all was fine until pointing though I suspect the sealer to be the problem.. bear with me I'll explain
Job laid looks great
Sealed with a coating sealer (not smart i know) still it looks great
Then we come to point up the joints, using my normal technique of 2:1:1 Softwash, Sharp & Cement respectively with a little Feb
That's when it looked like a sandy haze has covered the job.
Any Help would be great,
Posted: Sat Jun 24, 2017 12:22 pm
by Tony McC
Pointed how? Using a slurry or individual jointing?
And what sealant?
Posted: Sat Jun 24, 2017 12:43 pm
by Quaife Landscapes
No not a slurry its a wetter than damp mix pointed with trowels and a hosepipe finish,
Sealer is a generic blocks/concrete coatings sealer
Before you say there's the problem strip it
It looked great for 6plus days untill pointed up
Posted: Sat Jun 24, 2017 12:44 pm
by Quaife Landscapes
Sika sealer from the builders merchants
Posted: Sat Jun 24, 2017 12:50 pm
by Quaife Landscapes
Posted: Sat Jun 24, 2017 12:58 pm
by Quaife Landscapes
Posted: Sun Jun 25, 2017 1:05 am
by lutonlagerlout
vdw gftk 815 or romex D1 would have sorted this
looks off
if its the infamous g613 from china you are in the mire
LLL
Posted: Sun Jun 25, 2017 8:48 am
by Quaife Landscapes
Does anybody have suggestions on removing it/fixing it?
Posted: Sun Jun 25, 2017 9:49 am
by ilovesettsonmondays
Maybe sandblasted. Was laying granite Bush hammered setts years ago in Liverpool City Centre. Went in on the Saturday morn to grout them and at 12 0clock the engineer who was in charge that day said we're going brush the grout off and leave them it's grand national day lol. Cost 750 to sandblast them.
Posted: Sun Jul 02, 2017 8:01 pm
by Tony McC
The puhoties won't load for me, but if you've used a damp/wet cement mortar slurry on what LLL has identified as G603 granite, that will have penetrated the stone, which is notorious for its porosity. Then, to make matters worse, you've sealed it all in with a rather mediocre 'jack-of-all-trades' sealant which all but eliminates any chance of cleaning the cementitious staining simply and cheaply.
So: you could use a specialist stripper and hope that it is powerful enough to remove all of the sealant, exposing the cementitious staining, and then use a series of very careful acid baths to weaken and remove the staining. If that works and the stone is anywhere near presentable, you may well need to look at re-jointing the now-degraded joints and then, once all is ticketty-boo, and, hjopefully, some time next Spring once you are sure it has all worked as intended with no further problems, look to use a *quality* sealant suitale for porous granite paving.
Or you could consider the sand-blasting/grinding suggested by ILSOM.
Or you could rip up the lot and start again.
You'll have to mark this one down to experience, I'm afraid.
