SPECTRALOCK® Grout is an epoxy based grout that utilizes a revolutionary breakthrough in technology. Its unique cross-linking system performs like an epoxy with respect to color uniformity, durability, and stain resistance and it is easy to use like a portland cement base grout.

SPECTRALOCK® Grout is a a stainproof* (see limitations) epoxy based grout that utilizes a revolutionary breakthrough in technology. Its unique cross-linking system performs like an epoxy with respect to color uniformity, durability, and stain protection and it is easy to use like a portland cement base grout.

* Stain proof (residential installation only) to common household cleaners, liquids and other goods. Clean all spills immediately. See limitations on Datasheet

United States Invention Patent No.: 6881768 (and other Patents)

  • Stainproof.*
  • Inhibits the growth of stain-causing mold and mildew in the grout joints with Microban® antimicrobial product protection.
  • 80 minutes working time at 70°F (21°C).
  • Ideal for installations at wide temperature ranges.
  • Uniform color—no blotchiness or shading.
  • Easy to maintain, cleanable to the original color.
  • Tough, durable, and crack resistant.
  • Outperforms cement based grout.
  • Non-sag formula for walls and floors.

Installation Information

  • DS-638.5 - Installation Instructions (Multi-Language)


Product Data Sheets

Material Safety Data Sheets


No marketing information currently available for this product.

Add Review
nancy furey says...

We used spectrolock to install a 1" marble hexagon carrara marble floor in a bathroom and the marble became discolored and dull in spite of buffing and cleaning the surface. Should we rip the floor up and start all over with cement grout or is there someway to restore the marble finish?

Ken @ LATICRETE says...

Yes, a marble floor can be re-polished or restored in place. However, it would be a good idea to discuss your project with one of our Technical Service people. They would ask additional questions and from the information you provide may have other ideas for you. Please call them at +1.800.243.4788 ext 235. Leave a message and someone will call you back quickly.

John says...

I used this material on shower walls and really liked how this worked. Do you have this in larger sizes for using on floor tile with 1/4 in grout lines, the small containers just don't go far enough?

Rick Volkmer says...

I installed this grout and it turned out great! Now my wife wants to change the color of it. Can I remove a small top layer and apply a different color? I just did it today. Do you know if a new layer will adhere?

Ken @ LATICRETE says...

@John: Currently we only sell the mini-unit size at home centers. If you are a contractor you can check our distributor locator for a local distributor of our SpectraLOCK PRO product - that does come in a larger unit size.
@Rick: I recommend contacting our Tech Services team at the number I mentioned above - they're your best source for these types of recommendations.

Guest says...

horacio says...

i recently grouted a large floor with spectralock grout but after few days we notice a haze on the tile that wont come out, do you have a product to remove the haze off the tile?

JimDIYin609 says...

Just finished a 20sf 12"X12" x 3/8" polished marble job with 1/8" joints. Thank god it wasn't larger because I would be short material. The 2# container barely made it in the project and I was extremely careful to keep the field of the stone clean due to the clean up on epoxy grouts. Acording to Laticrete, I should have been able to cover ~41sf and I would suggest that they check their figures since I got them from the Laticrete web site. The job came out great and looks beautiful, but if it was a larger job I would be driving 30 minutes with a bad attitude to buy more grout. Good luck in your project, Jim

Thom from WV says...

I didnt do much research on grout before starting my bathroom remodel. The SpectraLOCK was at Lowes so I decided to give it a try. I liked the idea of stain/mildew proof for a shower application. Very easy to mix but being expoxy based, I found it difficult to install with a full size float. I purchased a small trowl size rubber float and worked only the grout joints. Smearing the grout like a water based grout didnt seem to get much in the joints so this other method worked fine. But boy was it a lot of work. I hope to never have to replace it. A 4x6 shower took me 2 weekends, floor to ceiling.

Dianne says...

I'll never use anything else! Easy to use and it looks great!

Bob Belmont says...

I just used SpectraLock to rehab the walls of a tiled shower stall. Looks real solid and nice. Video instructions were clear and accurate, the job went well. I plan to buy another container and do the floor of a second shower. I do have 1 important question: do I need to seal Laticrete grout against moisture? Staining is not the concern, water is. Please comment.

Dave & Gloria Feltz says...

Great product. First use in our kitchen - my husband used caramel w/ copper dazzle with diagonal cut italian porcelain tile-he did the grouting, since it takes some practice. Also, used on 18 x 18 backsplash tiles- I was able to do that grouting (he just masked off for me first). LIked it so much we did our main bathroom walls using lichen(discontinued) w/ pearl dazzle & both of us worked together. Have had many compliments - most recently from the tech from the gas company. Planning to use the "dazzle glow" in the master bath on the floor with sauterne & gold dazzle on the walls.

stone cutter says...

Laticrete Spectralock Premium Pro: Shown is a small section of finished floor. The 1.7 inch thick tiles were sawed from local stones, wet diamond polished with 200 grit, and grouted with Laticrete Spectralock epoxy grout. The epoxy grout was chosen because the 10' by 20' floor is suspended over a cellar and is inside a Four Seasons Solar Room. The floor will add over 2 tons of mass to help to even room temps, but will still see a wide range. I would expect expansion and contraction of the stones and slight flexing of the floor (the center of the floor sags about .001 inches with a live load of 100 pounds) to quickly crack a cementitious grout. Also, Laticrete is located nearby in CT. Comments which apply to grouting field stone tiles cut with their natural shapes that make for uneven, irregular grout lines with Laticrete Spectralock epoxy sanded grout: 1. Packaging is a total insult to the consumer. Sand comes in milk boxes designed so they self open during shipping, bu

Chris S says...

Great product to work with as long as you follow the instructions for cleaning haze...I was very pleased at first. The reason for my 2 star review is that after 18 months, I have stains in the traffic areas of the kitchen floor that will not clean. I've tried abrasive cleaners with bleach and even straight bleach and while it's a little better, it is still noticeably dirty compared to the off-white non-traffic areas. My hope was that this wouldn't happen - even with a light grout (Sautern). BTW, it worked fantastically in a shower surround - grout doesn't discolor when wet and after 4 years still looks great...just not happy w/ the performance on floors.


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