Page 1 of 2
Posted: Tue Jul 29, 2014 2:16 am
by dastrix
Hi All
So, we laid our limestone paving. It was down for about 2 months on a sand/cement bed. It looked fantastic prior to us sealing it.
We then applied a CSW Coating limestone stone enhancer, which is this:
http://cswcoatings.com.au/natural-stone-sealer-enhancer/
The pavers were dry as it hadnt rained for about 3 weeks prior to sealing, we applied the sealer and it looked great for about a week
Then, we had a heavy down pour. The rain sat on the surface of the pavers for a few days and now we have these horrible stains
Ive tried using Xylene and Metho to clean it off, Xylene removes about 30% of the stains but not completely.
Can anyone tell me what this is and how to clean it off??
Thank you
Posted: Tue Jul 29, 2014 6:37 am
by lutonlagerlout
something has gone badly wrong there
roger will know better
is that sealant expensive by Aussie standards?
cheers LLL
Posted: Wed Jul 30, 2014 9:04 am
by dastrix
Hopefully its fixable 
It was about $350 aussie dollars, so thats what 200pounds? For 20 litres
Roger??
Posted: Wed Jul 30, 2014 11:13 am
by RAPressureWashing
I don't know this product but from the cost? maybe one of the cheaper brands.
Anyway, you will need to strip the coating/sealer off with a proper remover, the Xylene won't remove it all.
Do you have Aqua-Mix products over there?
This is also going to need to be done with a rotary machine.
From the photos it doesn't look like the sealer had dryer/cured properly before you had rain, but from how I read your post you had a week without rain after sealing? Did you wipe off any excess sealer after you applied the sealer?
Was the surface properly cleaned before sealing?
What was the temperatures when you sealed?
There was definitely no other sealer or coating on the surface prior to you sealing?
Posted: Wed Jul 30, 2014 12:09 pm
by dastrix
Hi There
Thanks for the reply
Yes, we can get Aqua Mix products locally. Is the removal something I can do? I dont want to have to get a machine if possible :/ I have a Karcher 2400psi pressure washer
The surface was clean and it was about 20degrees celcius.
We definitely wiped the excess off, without a doubt (went through a LOAD of rags)
Cheers
Kris
Posted: Wed Jul 30, 2014 5:10 pm
by RAPressureWashing
dastrix wrote:Hi There
Thanks for the reply
Yes, we can get Aqua Mix products locally. Is the removal something I can do? I dont want to have to get a machine if possible :/ I have a Karcher 2400psi pressure washer
The surface was clean and it was about 20degrees celcius.
We definitely wiped the excess off, without a doubt (went through a LOAD of rags)
Cheers
Kris
What you need from Aqua-Mix is there Sealing & Coating remover, really you do need to do this with a floor buffer/rotary machine, soft to medium brush, as you can add honing powder to re-hone the surface as you go along. I'd also do a second clean after the sealant removal with there heavy-duty cleaner.
You could try with just the pressure washer, but can't guarantee the results as stuff like this needs mechanical pressure as opposed to just water pressure.
Here's one I did a couple of months back with the above products, again a failed sealer,
Then sealed with Aqua-Mix Enrich and Seal
Posted: Wed Jul 30, 2014 9:16 pm
by dastrix
Thanks roger, ill look into the products. Ill try the pressure washer first and then proceed from there 
Posted: Thu Jul 31, 2014 10:30 pm
by RAPressureWashing
dastrix wrote:Thanks roger, ill look into the products. Ill try the pressure washer first and then proceed from there
Okay, try the pressure washer, but I feel you are going to need a floor buffer for the best results though.
Posted: Fri Aug 08, 2014 7:04 am
by dastrix
Thanks, will under take this task shortly. The other garage area has not been sealed, we certainly wont be using that rubbish product again
Posted: Mon Sep 08, 2014 1:01 am
by dastrix
R&A Pressure Washing wrote:dastrix wrote:Hi There
Thanks for the reply
Yes, we can get Aqua Mix products locally. Is the removal something I can do? I dont want to have to get a machine if possible :/ I have a Karcher 2400psi pressure washer
The surface was clean and it was about 20degrees celcius.
We definitely wiped the excess off, without a doubt (went through a LOAD of rags)
Cheers
Kris
What you need from Aqua-Mix is there Sealing & Coating remover, really you do need to do this with a floor buffer/rotary machine, soft to medium brush, as you can add honing powder to re-hone the surface as you go along. I'd also do a second clean after the sealant removal with there heavy-duty cleaner.
You could try with just the pressure washer, but can't guarantee the results as stuff like this needs mechanical pressure as opposed to just water pressure.
Here's one I did a couple of months back with the above products, again a failed sealer,
Then sealed with Aqua-Mix Enrich and Seal
Hi Roger,
Just wondering if you can please detail the instructions to remove the haze and also the 'steel greyness' that the pavers now have from the weather and not being sealed.
I can as mentioned obtain the Aquamix products
Do I need to hire something like this? http://www.kennards.com.au/index.p....tid=201
Cheers
Kris
Posted: Mon Sep 08, 2014 4:14 pm
by RAPressureWashing
Kris
Yes that's the type of machine you need, but don't use pads to strip with say the Aqua-Mix sealing & costing remover you need a medium to soft brush. Also what aids the stripping process is honing powder around 220 grit, again Aqua-Mix do this product you'll need around 1 kilo.
What speed is the machine?
Posted: Mon Sep 08, 2014 9:12 pm
by dastrix
Than you Roger, im not sure ill give them a call and find out
So the machine just agitates the Aquamix stripper? Im reluctant to try a honing powder as the pavers are a honed/tumbled finish and id rather not remove that...
Posted: Mon Sep 08, 2014 10:56 pm
by RAPressureWashing
dastrix wrote:Than you Roger, im not sure ill give them a call and find out
So the machine just agitates the Aquamix stripper? Im reluctant to try a honing powder as the pavers are a honed/tumbled finish and id rather not remove that...
The machine with the proper brush fitted does agitate the stripper but also helps with the removal of the previous sealer. The honing powder won't harm your stone, it will act like a fine grit with the stripper aiding the removal of the old sealer.
Posted: Mon Sep 08, 2014 10:58 pm
by dastrix
Thanks Roger, what kind of speed am I looking for in a machine?
Cheers
Posted: Tue Sep 09, 2014 7:05 am
by RAPressureWashing
dastrix wrote:Thanks Roger, what kind of speed am I looking for in a machine?
Cheers
155 rpm