LEVELROCK® and DUROCK™ Topping/Capping Floor Underlayments
LEVELROCK® Stronger Than Concrete™ topping and capping floor underlayments provide strength that rivals conventional concrete. Try LEVELROCK® 3500 for an economical topping/capping solution, 4500 NXG® for one-step floor corrections, or the ultimate, one-in-all underlayment and wear surface product, ULTRAARMOR® floor underlayment.
Use DUROCK™ PROFLOW™ and QUIK-TOP™ self-leveling underlayments for finished floors with the highest compressive strengths in the industry. For superior self-leveling underlayment products, try our newest line – DUROCK™ ECOCAP™, SPEED™ and ULTRACAP™ self-leveling underlayments and Fast Finish floor patch.
Additional Resources
- Contact us
- Find an applicator
- Sustainability table
- Applications
- Floor underlayment selector
- LEVELROCK Product List
For more information, visit the LEVELROCK/ALCORP Network at alcorpmarketing.com.
Revised & expanded 2011 guidelines

Gypsum Construction Handbook
Online Tools
Global Websites
Distribution Centers