[Stonehenge]

Hello dman,

I'm thinking I saw the Techniseal name on a Unilock bag of poly sand. That doesn't mean they can't change the formula for the bags of sand with the Unilock emblems on them - that kind of thing happens all the time.

My experience with each has been very positive.

[Keith N]

Dman,

We installed a flagstone patio this past fall and used Techniseals
HP poly sand and it has the problem of not completely harding. I also noticed some washout. I figured it didn't totally hardin because some of the joints are wider than an inch. I guess I should call techniseal to see whats up.

[dman]

Yea, you're right, I suppose Techniseal could've come up with a slightly different blend to sell to Unilock - I still maintain that its an inferior blend than their original product though.

And Keith N, you should contact Techniseal and see if they can send a rep out to look at your job, you never know, maybe they'll credit you some product or do a repair. I know Alliance DP just came out with a product for flagstone good for joints up to 4 inches - called Gator Dust or something and comes in gray and brown.

[Tom Scheu]

I have read about polymeric sand and sand sreenings for use as fill between paver bricks. Can Limestone sand be used? My application is to replace sand screening in a patio that has bricks of varying shapes with gaps ranging from 1/4" - 1/2". Thank you.
Tom[at]Build-Equity[dotcom]

[klaf]

personally we almost never use poly sand unless it is around a pool. WE also never use mortar sand either as you all know how much fun that stuff is to us. We use a bagged jointing sand, really fine stuff, always dry and goes straight into the cracks. Weeds do not grow in it, never had a problem with it washing out, even with the heaviest of rains, and it is only about $8 a bag.

[Garden DoctorsLtd]

Hi guys,

We don't really use polymeric sand to joint block paving in the U.K. Do you have to use a compactor plate over it once its brushed in as you with kiln dried sand? Does it keep all weeds out?

Also if the pavers settle alittle over time, does the poly sand 'move' with the pavers or stand proud slightly?

We use it on flagstone patios but it always seems to dis-colour.. is all poly sand porous? Perhaps your products are superior!

James

[sandim]

We always use techo-bloc with pavers and gator dust with flagstone. If you blow off gently but well, works like a charm. I'm surprised to hear how disgruntled everyone is. Never have had a haze either.

[NCSULandscaper]

ive only used techni-seal poly sand, and it seems to be a simple foolproof application.....followed the instructions and have no hazing anywhere on my pavers..........and set up rock hard within a few hours

[akes]

I applied unilock's umbriano black polymer sand last fall and it never hardened. A unilcok rep said it was made in Chicago and probably was short on binding material. They said they would repair the job this July (warm dry weather) using a liquid stabilizer that will be just as good as the polymeric sand. They will not clean the joints out and a different rep indicated the tamping of the poly caused it to fail. He retracted when I pointed out the tamping was done after the poly was swept into the joints (I sensed a run around). I want the right fix as I have the back yard patio and walkway to complete and want to use the same black poly product. Is Unilock being fair and up front with the fix being liquid stabilizer? Am I better to remove the failed product (pressure washer? or remove the stones, clean the joints and relay and apply the polymeric sand.?) and reapply good polymeric sand??
Need some advice.
Akes

[njhusky]

Stonehenge...was it straight vinegar or diluted?

Originally Posted by Stonehenge

To your question of what chemical to use, one of our members here (Site) had success with household vinegar.

As for problems with other projects - I look at one project every single evening, and it's holding up just fine. The first one we ever did, just oover 4 years ago, we had the opportunity to visit last week when working at a neighbor's house. Looked great.

Hearing that ants are able to move that sand doesn't sound right to me. I've never, ever seen ants able to move this sand. Ever. I'm wondering if that sand is being made wrong somehow.

I have seen the 'skin' you're talking about, but that was where we were marrying stone to pavers and there was a joint that was about 1" wide.

[Zazo]

I am a student and operate my own small interlock pressure spraying and sanding gig. After using magic sand by stone mason several times i stopped using it, disgusted by what a bad product it was.
I have now been using RG+ by techniseal but have gotten the haze problem with both grey and beige colours. whats the way to get rid of the haze?
I have been considering using SP polymeric by Permapro. It hasnt been mentioned in this thread so far I was wondering if anyone has heard anything about that product.