When we installed our slate, Miracle 511 was recommended to me by Bill Vincent, one of the tile pro's in the bathroom forum. It works for all stone and did great for us. I just called the company the other day to inquire about resealing and the told me me the original applications are good for 3-5 years.

You can get it at Home Depot, I had read that the one sold at HD was inferior to other products Miracle sells but the tech told me the other day that this isn't true it's all the same strength.

To find out what specific product would best work for you, you can call their 800 # as well, here's the link:

Here is a link that might be useful: Miracle Products

Porous Plus by Miracle is considered far and away the BEST impregnating sealer by stone professionals. I use it on all my marble and quartzite. If you go to the Miracle web site there's a chart of recommendations. Porous Plus may be overkill for travertine, I never had that so I'm not sure. In which case their Miracle 511 would be great, and less expensive.

Here is a link that might be useful: Miracle Sealants

How does the Miracle 511 do for sealing the grout? We just had our travertine backsplash put in, and the tiles and grout were sealed with the 511. I noticed that the grout is very lightly staining when I splashed coffee on it. They did come back and reseal for me though, so maybe it will be better this time?

Thank you all for the help. Much appreciated. I did find out that the 15 yr impregnator/sealer is made by "Dry Treat". They required a certified person that has the proper installation instructions do it to ensure the 15 yr warranty. Don't know if they would let someone off the street "learn" what there is to know etc.
I'll just go with 511 or the product by DuPont.

Thanks, Nicole

TileLab makes a 20 year product (per label is a stone, grout & tile sealer). I think they also offer a sealer that's less expensive (but rep told me you might have to recoat once a year). I opted for the 20 yr product (thus far, it's been 1 1/2 yrs....no mold or mildew. All I do is wipe with a damp cloth. I just made sure all joints were well coated....(I used multiple coats) follow the directions to the letter. I learned this when I regrouted my tile shower (leaving out a step makes a huge difference.

We purchased TileLab at Home Depot. Definitely a good product.

Tilelab has mixed reviews by the pros. If you go to the johnbridge site, there are several conversations about it.

Here is a link that might be useful: Professional tiler site.

I don't know how it holds up long-term, though some of the guys over on the JB forum swear by it--STT's SB sealer. We used it last year in our new bathrooms on honed travertine, split face mosaic, White Thassos pieces and mosaic, and on our grout (TEC XT grout--not necessary to seal it, but we did). So far everything looks great.

I applied it myself (DH helped over tubs because I couldn't reach that high!). It's very easy to apply and buff off the excess (Porous Plus was a b**ch to buff off the travertine in our guest bathroom--very smudgy and smeary, lots of haze). It has very minimal odor, too which was a big consideration for us, as our bathrooms are tight quarters, and one has no window.

FYI, I ordered a can from John Koessler (he's on the JB forum), who is one of their distributors.

OT: Can I *make* a poultice? Is there a product I should look for to pull mild discoloration from my kitchen granite? (It is polished Costa Esmerelda -- mostly 'money green' with veins of black, some white quartz running through it.) The house is 14 years old -- granite never sealed, per instruction of the installer. I believe this granite originates in Iran.