Our most technologically advanced and adaptive epoxy. 30-FS can be applied to freshly poured concrete or existing slabs with moisture issues.

Synthetics 30-FS is a two-component high performance bi-resinous polymer designed to penetrate concrete slabs (including Portland based terrazzo) for the treatment of concrete moisture. This technology of high ionic resins and chemical components produce a mixture that imparts a high fluro surfactant, to embed a dense, high compressive strength membrane to restrict water vapor emission, alkalinity migration and 100% relative humidity transfer. The product is an outstanding concrete primer for epoxy, resilient, carpet and wood flooring systems and is durable enough to be used as a standalone floor coating.

Synthetics 30-FS is easy to mix and offers a pot life of up to 4 hours (@75 degrees). This allows deep concrete penetration, bubble free curing and unmatched concrete adhesion. The product is applied in a single or multi-coat application for specific performance requirements. Surfaces treated with Synthetics 30-FS remain water tight and vapor resistant with significantly improved adhesion strength for subsequent flooring products.

Synthetics 30-FS seals cracks, joints and imperfections during the initial application. Larger cracks may require sealing with a specific product. Contact our technical department for recommendations.

green product

Synthetics 30-FS is low in VOC and compliant for use in all US regions. The special resins and chemical components compliment the Green Product Movement by reducing indoor air contaminants that are odorous and irritating and/or harmful to the comfort and well being of installers and occupants. Synthetics 30-FS is considered a green product and compliant for use in classrooms, office spaces and remains formaldehyde free with no other CREL VOC components.


Synthetics 30-FS is a Low VOC, Vapor Control System that can be applied to freshly poured or existing concrete surfaces without the need for shot-blasting.

  • Penetrates dry and damp concrete
  • Water based, ultra low VOC Content
  • Applied to fresh poured concrete within 48 hours
  • Cures in 12 hours
  • Industry’s Best 15 Year Warranty
  • Contributes to LEED EQ 4.2 (1 point)

Synthetics 30-FS is a water-based high performance treatment for concrete surfaces requiring drastic moisture reduction.  The product offers the below benefits:

  • Compatible with ALL flooring, coatings and primers 
  • One product for treating vapor emission, alkalinity and relative humidity
  • Excellent mixed pot life of 4 hours @ 75 degrees for longer working times
  • Allows treatment of newly poured concrete within 48 hours
  • Performance exceeding solvent based epoxy and 100% solids moisture treatments
  • Penetrates concrete, portland based terrazzo, lightweight concrete and gypsum surfaces
  • Un-affected by alkalinity (14pH) and restricts the migration
  • Penetrates concrete previously sealed with silicates, resin treatments and other contaminates.



For Day of Pour applications, allow the concrete to set-up and dry to a light grey after trowel finish. It is VITAL that the surface finish is not burnished. Leave finish as open as possible. After surface has lightened and it is not possible to mar the surface, thoroughly clean with fresh water and broom away all standing water: Surface must be clean. The mixed product can be applied with sprayer or poured and spread with notched squeegee. Back roll material with a 3/8” nap roller for a smooth and even surface.

Existing concrete must be structurally sound, clean, and free of dust, grease, oil, existing coatings, paint marks, carbonated layers and other potential contaminants. The concrete surface must either grinded clean and porous, or it can be lightly profiled by shot-blasting. Profile the edges, joints and cracks clean with a diamond crack chasing blade, removing any and all fill. Acid etching is not acceptable. Vacuum the entire surface with an industrial (0.30 micron) unit. Do not use clean sweep agents.


Read all mixing data prior to use. Do not mix partial units. Pre-mix the Synthetics 30-FS Part B unit separately using a “Jiffy” paddle at a low speed for 2 – 5 minutes. Slowly add the entire contents of Part A to the Part B container. Mix using a “Jiffy” paddle and a low speed (50 to 400 rpm) drill for 5 minutes, scrape the sides of the container with the paddle blades at least once to promote proper mixing of all contents.

Allow the product to induct for a minimum of 20 minutes to 1 hr. time period.  Mix product for 1 minute. Mixed product is a creamy white mixture.

  • Pot Life: 2 hrs. @ 95 degrees & 4.5 hrs. @ 75 degrees
  • Cured surfaces are compatible with adhesives designed for non-porous surfaces
  • Product may be applied to a solid, clean gypsum substrate after 5 days of cure
  • Thicker application rates may require longer cure times


  • Pre-dampen the concrete with clean water using an airless sprayer
  • Allow the surface to dry for 20 minutes, broom areas that puddle
  • Pour product on the concrete and pull using a 10 mil notch squeegee
  • While wearing spike shoes cross roll product using 3/8″ nap roller after 40 minutes
  • Spread evenly over the entire surface following the specified spread rates
  • Use fans to increase air movement during and after application
  • Cement patching may be applied after 12 – 24 hrs of cure using a non-porous primer
  • Allow surfaces to be tack free before coating and covering product.
  • Typical curing times @ 80 °F Degrees (product must be tack free):
  • Foot Traffic: 2 hrs.
    Wheel Traffic: 24 hrs .
    Synthetic30 Re-coat: 2 hrs. 
    Adhesives: 12 – 24 hrs.
    Epoxy Coatings: 24 – 30 hrs.
    Cement Primer: 12 – 24 hrs. (no tack state)


0.0 to 10 pounds & RH 100%……….1 coat @ 200 ft / gallon/ coat  

10.1 to 15 pounds & RH 100%……..1 coat @ 160 ft / gallon/ coat

15.1 to 30 pounds & RH 100%……..2 coats @ 250 ft / gallon/ coat

Substrates with excessive cracking will require additional product to treat cracks and joints prior to covering product with any type of flooring or coating system.  Approximate vapor emission rate after application: 1.0 to 2.0 lbs. per ASTM F1869. Coverage rates may vary based on concrete profile and porosity. Product is resistant to 14pH for all spread rates.


Cracks and joints that are less than 1/8 inch wide may be sealed with Synthetics 30-FS during application. Reseal cracks that remain exposed after application with additional product for greater crack bridging.

  • Pour Synthetics 30-FS into cracks and joints, spread with a flat squeegee
  • Allow Synthetics 30-FS to cure for 24 hours.
  • Use fans to increase air movement during and after application.
  • Cracks larger than 1/8 inch may be sealed with a 100% solid epoxy joint filler.


Allow Synthetics 30-FS to cure a minimum of 12 hours (80°F) – 24 hours (55°F) before using cement products to smooth uneven floor transitions. Use a high quality patch or Portland cement-based product only. A non-porous primer must be used to secure cement products. Do not use cement products with special additives as a replacement for a non-porous primer. Follow the flooring manufactures recommendations for cement thickness requirements.


Do not apply to concrete surfaces when temperatures are expected to fall below 35°F (1.7°C) during and 24 hours after application. Do not apply if rain, snow or dew point is expected prior to, during or after 24 hours of application. The concrete surface can be shot-blasted to allow maximum product penetration. Adhesion testing is recommended on previous sealed concrete.


Synthetics International manufactures and remains the exclusive distributor of Synthetics 30-FS worldwide. The product is manufactured in the United States and is shipped as non-hazardous throughout the United States.


Clean equipment, drips and over-sprays with water while still wet. Dried product requires mechanical abrasion for removal.

Factory sealed units are packaged in 2 and 5 gallon Part A and Part B kits. Do not mix partial units.

Product may be stored and considered useable within one year of shipment.