Never been a fan of Thompsons, it just doesn't hold up. I used Ghost Shield 4500 densifier, followed by 8510 sealer. Some info below. No affiliation with the CO., but I do like the product. Mike
Hi All,
As a Ghostshield Distributor we often get asked the difference between the 8505 and the newer 8510, so please see below.
8510 = 100% Actives……….. 8505 = 40% Actives
Both products have the oleophobic “fluorocarbon” which is essentially a Teflon however because of the water vs. solvent carrier we are able to really beef up the fluorocarbon in the solvent 8510. With the water based 8505 it can handle only so much of the fluorocarbon in the mix then the viscosity starts to change, the fluid starts to gel and now you lose your ability for the product to absorb well. With the 8510 the solvent has a higher acceptance of the fluorocarbon therefore we are able to add more of it into the formulation.
Because of the 8510’s added fluorocarbon strength along with it being a solvent (getting better penetration than water) we find the 8510 has a much higher resistance to any oils and such vs. the 8505.
There really are no differences in each product with the exception the 8510 is really the 8505 on steroids ! There also is not that much of a price difference/sq ft between the two. The 8505 costs less/sq ft but covers less/gal so the net difference is maybe 10 cents/ sq ft.
In either case, make sure to use the 4500 Densifer which should be applied, then wait about a week for it to 'work' with the concrete, then apply the sealer. If you don't use the 4500 which is inexpensive, you will use much more of the more expensive sealer so the 4500 Densifer not only works better but it saves money!
Unfortunately since we don't make the Ghostshield no GJ discounts are available on this product line.
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