Everything You Need to Know About Concrete Overlays
Chapters
Click to jump to section
Speakers
Key Takeaways
Always assess the existing concrete slab's solidity, pitch (minimum 1/4 inch per foot), and smoothness (imperfections less than 3/8 inch over 10 feet) before starting an overlay project.
Do not fill concrete dips with self-leveling compounds; instead, grind down high points to achieve an even surface to prevent delamination and water accumulation.
Inspect and protect masonry weep holes, ensuring a 1/2 to 3/4 inch air gap between pavers and brick to prevent moisture damage and contractor liability.
Install coping with proper drainage by laying masonry cord under mortar or applying adhesive perpendicular to the cap face, preventing water from getting trapped.
Utilize a geotextile layer over the concrete slab to confine bedding material and prevent migration through hairline cracks.
For jointing, use a high-quality polymeric sand designed for overlays, like Flexlock Ultra G2 Rapid Set, and thoroughly consolidate it with a rubber mallet before activation to ensure density and effectiveness.
Want the full experience?
Join the Inner Circle for full access to every episode, AI-powered insights, personalized coaching, and a network of industry leaders.
Join Inner Circle →