Inside Acrylic
Clear acrylic finish
The standard interior sealer for compatible WRC, RAC and TSC stained floors.
View Inside Acrylic →Protect the finished floor
Interior Concrete Sealers & Floor Coatings
Choose the right protection for stained or bare interior concrete, from water-based acrylic to durable urethane, epoxy and polyaspartic systems.
- Interior use
- Matte through high gloss
- Stained or bare concrete options
- Professional-grade systems
Quick selection guide
Choose the finish that fits your floor
Matte Urethane
Low-sheen performance
A durable matte finish for properly prepared bare concrete or compatible systems.
View Matte Urethane →High Gloss Urethane
Glossy performance
A durable water-based urethane for projects that call for a higher-gloss finish.
View High Gloss Urethane →Epoxy + Polyaspartic
High-build coating systems
For solid-color, flake, metallic and other resinous interior floor systems.
Explore floor coatings →Shop interior systems
Shop interior sealers and coatings
Know what you are choosing
A sealer, coating and floor finish do different jobs
Primary sealer
CR-515 Inside Acrylic protects compatible stained interior concrete and helps develop the finished color and sheen.
Performance coating
Urethane, epoxy and polyaspartic products provide different levels of build, durability, sheen and application requirements.
Protective floor finish
CR-520 and CR-520M are renewable wear layers used where recommended. They do not replace the primary concrete sealer.
Build the complete system
From preparation to everyday care
- 1
Prepare
Remove contaminants and create the surface profile required by the selected product.
- 2
Stain or coat
Apply your selected stain or decorative coating according to its current instructions.
- 3
Seal
Protect stained concrete with a compatible sealer or coating system.
- 4
Finish
Add CR-520 or CR-520M where recommended as a renewable wear layer.
- 5
Maintain
Dust mop regularly and wet mop with a neutral-pH cleaner such as Clean Living Essentials.
Plan the whole project
Building an interior floor?
Compare the available sealer and coating systems before choosing your finish.
Compare sealer optionsApply it correctly
Choose the right tools
Match your sealer or coating with the correct roller, squeegee, mixer and application method.
Shop application toolsBefore you begin
Interior sealer FAQs
Which sealer should I use over WRC, RAC or TSC stain?
CR-515 Inside Acrylic is the standard interior sealer for compatible WRC, RAC and TSC stained floors. Review the current product instructions before application.
What is the difference between acrylic, urethane and epoxy?
Acrylic is a straightforward topical sealer commonly used over stained concrete. Urethane provides a more durable matte or high-gloss finish. Epoxy is a higher-build coating system used for solid-color, flake and metallic floors.
Can CR-545 Matte Urethane be applied directly to concrete?
Yes, on properly prepared concrete when its current product instructions are followed. A CR-531 epoxy base coat is not always required.
Is CR-520 Floor Finish a concrete sealer?
No. CR-520 and CR-520M are protective floor finishes used over an appropriate cured sealer or coating where recommended.
How should concrete be prepared before sealing?
It must be clean, dry and free of oil, grease, wax, coatings and residue. Follow the technical data sheet for the exact product you are applying.
How soon can I walk on the finished floor?
Dry time and full cure vary by product and conditions. Follow the current technical data sheet for your selected product.