573 Fastfill Screed

573 Fastfill Screed is a single component, polymer modified cementitious coating developed for rapid resurfacing and internal waterproofing of concrete. Formulated with advanced micro-silica, fibre, and polymer additives, it cures to form a dense, durable matrix capable of withstanding up to 10 bar (145 psi) of negative hydrostatic pressure.

Designed for easy on-site mixing and fast track application, the screed levels worn or uneven surfaces while providing a high performance barrier against moisture ingress. Its fast curing profile supports reduced downtime, and it integrates seamlessly with Resimac primers and top coats for multi-layer waterproofing systems.

Key Features

• Fast curing for quick resurfacing and minimal downtime
• Restores level surfaces while sealing against water ingress
• Withstands 10 bar (145 psi) hydrostatic pressure
• Single component screed for internal waterproofing and repair

Typical Applications

• Resurfacing sump and tank floors
• Waterproofing basement slabs and walls
• Levelling uneven concrete in wet areas
• Repairing containment bunds
• Internal waterproofing of concrete structures

Real World Applications

Find out how 573 Fastfill Screed has delivered reliable results in real-world repairs by exploring our case studies.