Rapid Hardening Repair Compound

STOPGAP 400 is a fast setting, rapid drying compound for repairing internal floors prior to the application of STOPGAP smoothing underlayments in light to heavy duty applications. It is also suitable for use on stairs, steps and general repairs to cracks and holes.

Key benefits: slump resistant and rapid hardening making it ideal for creating ramps. Can be trowelled to a feathered edge.

Location: Internal

Substrates: Sand/ cement screed, concrete, epoxy and polyurethane resins, ceramic and STOPGAP waterproof surface membranes.

Floor Coverings: Vinyl, ceramic, Carpet and wood flooring*

Application thickness:

  • Unfilled – 2 – 20mm
  • Filled – 20 – 50mm

Coverage: 2m2 at 3mm
Packaging: 10kg
Consumption: 1.63 kg/m2
Mixing: 2.3L of water per bag
Working Time:10 – 20 mins
Time to foot traffic: 20 – 30 mins
Ready to receive flooring: 90 mins at 2mm @ 20 degree.
Application: Flat Trowel

Floor Prep Calculator

Coverage may differ depending on the application method, substrate condition, and on-site factors.
The information provided below is intended solely as a guide.
For more detailed information, please consult the product datasheet.