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Prime Plug-It FS

A specialized, fast-setting patch material suitable for repairing water leaks in structural concrete

Product Description

Prime Plug-It FS is an environmentally friendly, high performance, high-strength, fast-setting repair material engineered to instantly stop water leaks in concrete. Prime Plug-It FS is designed to be used either by itself or together with other Prime Sealants products such as Prime Adhere & Prime Lock as part of a comprehensive negative side repair system.

Prime Plug-It FS is extremely fast-setting, requiring only 2 to 3 minutes of initial set time and 4 to 5 minutes for final set time according to ASTM C-191. Prime Plug-It FS is easy to apply and delivers 7,000+ psi of compressive strength after 28 days according to ASTM C109 and 1,670 psi of flectural strength after 28 days according to ASTM C348. Prime Plug-It FS is environmentally-friendly.

Use Prime Plug-It FS on new and old concrete and Architectural concrete, on vertical concrete surfaces such as concrete walls and columns, inside tunnels and parking garages and in below-grade concrete structures. These are but a few of Prime Plug-It FS’s many possible applications.

Say you have a leak in a concrete surface where you can see water coming in. It might be a below grade vertical wall, or the sides or roof of a tunnel, or something else. In any case, you need a product that acts quickly to immediately stop the water from coming in. In situations like these, Prime Plug-It FS is your obvious choice. Prime Plug-It FS is a high performance repair product specifically engineered to stop water leaks and plug various types of breaches. Prime Plug-It FS is easily mixed on site and sets up in minutes with a 7,000+ psi compressive strength.

Like its sister product, Prime Plug-It, Prime Plug-It PS works flawlessly with other products from Prime Sealants such as our sticks-through-water-and-oil-to-everything sealant Prime Adhere and our premium, high-performance hardener / densifies / protectant treatment Prime Lock. Sometimes you need an integrated system of products to do the job right. If that’s the case with you, consult with the specialists at Prime Sealants to determine what else you might need to solve your problem.

Prime Plug-It FS is available in 50 lb. (22.7 kilo) pails.



  • Fast-setting (2 to 3 minutes initial set time; 4 to 5 minutes final set time [ASTM C-191])Fast-setting (2 to 3 minutes initial set time; 4 to 5 minutes final set time [ASTM C-191])
  • Easy to apply
  • 7,000+ psi compressive strength after 28 days [ASTM C109]
  • 1,670 psi flectural strength after 28 days [ASTM C348]
  • Environmentally-friendly


Where To Use

  • New & old concrete
  • Parking garages
  • Architectural concrete
  • Vertical concrete surfaces
  • Concrete columns
  • Tunnels
  • Parking garages
  • Below-grade concrete structures
  • Piers
  • Leaky basements

Prime Plug-It FS is ideal for stopping water leakages in basements.

Prime Plug-It FS can fix cracks in concrete footings.

Prime Plug-It FS can fix cracks in steps.

Prime Plug-It FS can fix cracks in concrete columns.


Product Number: 1001.0200

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