Quikrete 8620-18 Polyurethane Mortar Crack Sealant 10 Oz

Product Description

The QUIKRETE COMPANIES 8620-18 is a 10 oz polyurethane mortar crack sealant formulated for construction-grade sealing and waterproofing of deteriorating mortar joints. The non-sag, textured formula is designed to stay in place on vertical and overhead surfaces without slumping. It cures to a firm yet flexible consistency, allowing it to move with minor joint expansion and contraction without cracking or disbonding. This product is suited for masonry professionals and skilled tradespeople performing tuck-pointing repairs on brick, block, and stone assemblies.

This sealant is applied to damaged or deteriorating mortar joints on residential and commercial masonry structures. It is a practical solution for tuck-pointing work where a textured, mortar-like appearance is required after the sealant cures. The construction-grade formulation makes it appropriate for exterior applications where moisture intrusion through mortar joints is a concern.

Key Features

• Polyurethane construction-grade formula for durable joint sealing
• Textured finish blends with existing mortar appearance
• Non-sag consistency holds position on vertical surfaces
• Cures to a firm, flexible consistency to accommodate joint movement
• Waterproofing performance for deteriorating mortar joints
• 10 oz tube format compatible with standard caulk guns

Compatibility

Designed as a construction-grade mortar joint sealant for use on brick, concrete block, and stone masonry assemblies where tuck-pointing and waterproofing repairs are required.

Installation Notes

Masonry contractors and experienced tradespeople typically apply this product using a standard caulk gun. Clean the joint of all loose mortar, debris, and moisture before application. Follow all applicable local building codes and manufacturer application guidelines for surface temperature and cure time. Do not apply to joints that are actively wet or below the minimum recommended application temperature.

Technical Specifications

• Net Volume: 10 oz
• Formula Type: Polyurethane
• Texture: Textured, non-sag
• Cured Consistency: Firm and flexible
• Package Weight: 6 pounds
• Unit of Measure: EA
• Package Quantity: 6

Standard Information

• Brand: QUIKRETE COMPANIES
• Manufacturer Part Number: 8620-18