Bare Concrete
Best SurfaceThis system is designed to bond to properly prepared concrete. The concrete must be clean, dry, sound, and mechanically ground or shot blasted.
KorTek 917 Lithium Silicate Concrete Densifier
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KorTek 917 Lithium Silicate Concrete Densifier
Dymond KorTek 917 is an extra-strength, water-based lithium concrete densifier designed to chemically harden, dustproof, and fortify concrete and cementitious substrates. It penetrates into the surface and reacts with the concrete to improve abrasion resistance, durability, moisture resistance, and protection against wear while keeping the substrate breathable.
KorTek 917 is ideal for concrete floors, sidewalks, driveways, cement surfaces, natural stone, and precast stone where a stronger, longer-lasting surface is required without changing the overall appearance of the substrate.
Key Benefits
- Extra-strength lithium concrete densifier
- One-component, water-based formula
- No VOCs
- Helps harden and fortify concrete surfaces
- Reduces concrete dusting
- Improves abrasion resistance and surface durability
- Helps protect against wear, moisture damage, and efflorescence
- Maintains breathability
- Normally does not change the appearance of the substrate
- No primer or topcoat required
- Can be applied by sprayer, mop, brush, or other suitable method
Recommended Uses
- Concrete floors
- Garage floors
- Warehouse floors
- Workshops
- Sidewalks
- Driveways
- Cementitious substrates
- Natural stone
- Precast stone
- Dusting concrete surfaces
- Exterior concrete exposed to weathering
How KorTek 917 Works
KorTek 917 uses lithium densifier technology to react with cementitious ingredients within the substrate. Once the reaction occurs, the treated surface becomes denser, harder, and more abrasion resistant.
Unlike a traditional film-forming sealer, KorTek 917 becomes an integral part of the surface. It does not create an impermeable coating, so the concrete remains breathable while gaining improved protection against wear, dusting, moisture, and surface deterioration.
Technical Information
| Product Type | Water-based lithium concrete densifier |
|---|---|
| Components | One-component |
| VOC Content | No VOCs |
| Color | Clear to very opaque |
| Coverage | 100 to 400 sq ft per gallon, depending on substrate absorptivity |
| Application Thickness | Apply until surface is saturated without puddles |
| Application Methods | Sprayer, mop, brush, or suitable application method |
| Application Temperature | 55 to 90°F |
| Dry Time | Allow 24 hours for maximum benefit |
| Primer Required | No |
| Topcoat Required | No |
| Viscosity | Less than 25 cps |
| DOT Classification | Not regulated |
| Packaging | 5, 50, and 275 gallon containers |
| Shelf Life | 1 year in unopened containers when stored between 50 and 80°F |
| Storage | Store between 50 and 80°F. Keep from freezing. |
Why Choose Dymond KorTek 917?
KorTek 917 is a strong choice when you want to improve concrete performance without installing a visible coating system. It helps harden weak or dusting concrete, improves surface durability, and protects the substrate while preserving the natural concrete appearance.
For industrial floors, commercial spaces, driveways, sidewalks, and concrete substrates exposed to everyday wear, KorTek 917 strengthens the concrete from within rather than simply sitting on top of the surface.
Frequently Asked Questions
What is KorTek 917 used for?
KorTek 917 is used to densify, harden, and dustproof concrete, cement, natural stone, precast stone, sidewalks, driveways, and floors.
Is KorTek 917 a concrete sealer?
KorTek 917 helps reduce water absorption, but it is not a traditional film-forming sealer. It penetrates into the concrete and reacts with the substrate while allowing the treated surface to remain breathable.
Will KorTek 917 change the appearance of my concrete?
Normally, KorTek 917 does not significantly change the overall appearance of the substrate. After drying, the treatment is usually not readily visible, except the concrete has been fortified and strengthened.
How much coverage will I get?
Coverage depends on the absorptivity of the substrate. Typical coverage is 100 to 400 square feet per gallon when the surface is fully saturated.
Does KorTek 917 require a primer?
No. KorTek 917 does not require a primer.
Does KorTek 917 require a topcoat?
No. A topcoat is not required. Multiple coats of KorTek 917 are compatible, although one coat is normally sufficient.
How long should KorTek 917 dry?
Allow the treated surface to dry for 24 hours to obtain maximum benefit. Keep the floor dry and restrict traffic during this period.
Can KorTek 917 be used outside?
Yes. KorTek 917 is suitable for exterior concrete such as sidewalks and driveways, and it helps improve resistance to weathering and freeze-thaw effects.
Can KorTek 917 be applied to damp concrete?
The substrate can be damp, but there should be no standing water or puddles. Best results are usually achieved on a dry substrate.
The Strength of Diamond. The Confidence of a Lifetime.
Dymond Coatings are engineered with the same qualities as their namesake — tough, long-lasting, and built to bond for life. That’s why we back every eligible Dymond kit with our Lifetime Promise: if your floor fails due to a verified product defect, we’ll replace the material or issue a credit toward your next job. This warranty applies to complete Dymond systems (primer, base coat, and topcoat) when installed on indoor concrete surfaces and applied according to Dymond’s preparation and application guidelines. Covered issues include delamination caused by faulty resin blends, curing failure due to batch defects, and contamination introduced during manufacturing or packaging. To qualify, the product must be within shelf life, used under proper storage conditions, and installed using only Dymond components.
This warranty does not extend to issues arising from improper surface preparation, substrate contamination, excessive moisture vapor, impact or abuse, substrate movement, or UV discoloration of white/light epoxies. Installations over wood, tile, or outdoor surfaces are excluded unless specifically approved. Cosmetic issues such as texture variation, microbubbling, or minor tint shift are not covered. Warranty coverage is limited to the original purchaser and is non-transferable. Claims must be submitted with photographic evidence of each install stage and full batch documentation. Dymond reserves the right to determine whether the cause of failure falls within warranty scope.
This Promise applies to most DIY and light commercial indoor projects. Larger commercial and industrial installations may be eligible for custom coverage — contact us for terms.
Can This Be Installed Over My Existing Floor?
Yes, in many cases, but the floor underneath has to be clean, solid, and mechanically prepared. The coating can only bond as well as the surface it is applied to.
Every floor is different. When coating over anything other than properly prepared concrete, we strongly recommend applying a small test area first.
Existing Epoxy
Good With PrepThis system can be installed over an existing epoxy coating if the old coating is firmly bonded, clean, sound, and fully deglossed.
Tile
Conditional / Test FirstCan be installed when tile is firmly bonded, clean, degreased, abraded, and tested first. Installation is done at your own risk.
VCT Tile
Conditional / Test FirstMany customers successfully coat over VCT, but the bond depends on tile, adhesive, waxes, moisture, and movement. Installation is at your own risk.
Wood
Conditional / Scratch CoatRequires a scratch coat first. Wood installations are done at your own risk. Always test first.
Required Surface Prep
For a strong bond, the surface must be mechanically prepared. Cleaning alone is not enough.
1
Grind or Shot Blast
The floor must be mechanically ground or shot blasted to create a surface profile the coating can grip.
2
Remove Contamination
Oil, grease, wax, soap residue, dust, old adhesive, sealers, and loose material must be removed before coating.
3
Repair Cracks & Defects
Cracks, holes, divots, and damaged areas should be filled before coating for a stronger, smoother finish.
4
Test First When Unsure
For tile, VCT, wood, unknown coatings, sealed floors, or questionable surfaces, apply a small test area.
Installation Questions We Get Every Week
Click any question to expandDoes the floor need to be ground?
Yes. For a strong bond, the coating needs a clean, mechanically prepared surface profile.
What does delamination mean?
Delamination is when the coating separates, peels, bubbles, or lifts from the floor underneath.
Can this be installed over an existing epoxy?
Often yes, if the existing coating is fully bonded, clean, sound, abraded, and tested first.
Can this be installed over VCT tile?
Sometimes, but the installation depends on the tile, adhesive, waxes, movement, and moisture. Test first.
Can this be installed over wood?
Wood is conditional and normally needs a scratch coat. Always test first.
Can this be installed over tile?
Tile can be conditional. It must be firmly bonded, cleaned, abraded, and tested before a full installation.
Still Not Sure? Test Before You Coat.
Every floor is different. If you are coating over tile, VCT, wood, an unknown coating, sealed concrete, or a questionable surface, apply a small test area first before installing the full system.
The coating can only perform as well as the surface underneath it.
Have a Question We Haven't Answered?
Ask it here. Our product experts are ready and happy to help with any questions you have.
Pro Tip: Always read the full Installation Guide and Product Data Sheets before starting your project. Proper prep is the key to a long-lasting, beautiful floor.
