Gelacryl Superflex

Methacrylic Acrylate Copolymer

Product Description

Superflex is unique blend of methacrylic acrylate copolymers that combines the low viscosity of traditional acrylate resins with the elongation and adhesion typically associated with polyurethane resins. Its low viscosity makes it ideal for injection into pores, capillaries, hairline cracks, and honeycombed concrete. Superflex’s low surface tension also make it suitable for penetration into soils, making it an excellent choice for curtain wall grouting. Pumped at 1:1, it polymerizes to form a resilient, highly elastomeric gel with elongation > 300%

Product Applications

Superflex is designed for use in any below ground structure or any water retaining structure, where there is permanent moisture. Especially well suited for:

  • Hairline & spider cracks in concrete
  • Re-injection of failed polyurethane grout
  • Expansion & moving joints
  • Honeycombed concrete
  • Curtain grouting 
  • Potable water applications

Product Advantages

  • Exceptionally low viscosity – penetrates cracks 0.1mm (0.004”).
  • Post reaction expansion of up to 56%
  • ANSI/NSF 61 Certified for use with potable water
  • Non corrosive and non toxic
  • Insoluble in water and petroleum based solvents once cured.
  • Resistant to most acids and alkalis
  • Excellent thermal resistance 40ºF - 160ºF
  • Reaction time can be controlled



Viscosity at 77ºF 15-20 cps
Mixed Viscosity 6-8 cps
Appearance  Blue Green
Specific Gravity 1.17
Elongation at Break 300% (ASTM 638)
Post Reaction Expansion 56% at 90% Humidity
Permeability at 29 psi 3.53 x 10-9 cm/s

Note: The data shown above reflects typical results based on laboratory testing under controlled conditions. Reasonable variations from the data shown above may result.

Packaging & Handling

Superflex is packaged as a kit consisting of a of 5.6 gallons of grout (55/lb jerrican), 2 lbs. jar of SP-200 initiator*, and 28 oz. can of TE-300 activator. Shelf life for TE-300 activator is 6 months.

*Shipped: Oxidizer (shipped as haz-mat)

All components should be stored in a dry place at temperatures between 40°F and 80°F. Do not thin with solvents.

Warning! Do not let SP-200 and TE-300 come into contact with each other prior to field mixing. A poisonous gas may result! STORE COMPONENTS SEPARATELY FROM EACH OTHER

Mix Ratios

Reactivity T° (F) Superflex (gal) TE300 (oz) % TE300 Water (gal) SP200 (oz) % SP200 Gel Time (min)
41 5.6 32 4.5 5.6 40 5.4 1
41 5.6 32 4.5 5.6 24 3.2 2
41 5.6 32 4.5 5.6 16 2.1 3
50 5.6 22 3.1 5.6 32 4.3 1
50 5.6 22 3.1 5.6 16 2.1 2
50 5.6 22 3.1 5.6 8 1.1 3
59 5.6 18 2.6 5.6 24 3.2 1
59 5.6 18 2.6 5.6 16 2.1 2
59 5.6 18 2.6 5.6 8 1.1 3
68 5.6 14 1.9 5.6 24 3.2 1
68 5.6 14 1.9 5.6 16 2.1 2
68 5.6 14 1.9 5.6 8 1.1 3
77 5.6 18 2.5 5.6 18 2.5 0.5
77 5.6 14 2.0 5.6 14 2.0 1
77 5.6 10 1.5 5.6 10 1.5 3

Superflex is designed for use below ground or where there is permanent moisture. Gel time varies depending on the amount of acceleration and temperature. See chart above for time and temperature information. For concentrations above 3%, use TE-300 at 3% and increase SP-200 only. Adding excessive amounts of TE-300 can adversely affect the quality of the reacted gel. (All results above are based on 77ºF. Site trials should always be carried out to determine the gel time required.)

Installation Guidelines


In a clean pail pour desired amount of Superflex and add TE-300 in accordance with the Mix Ratio table to achieve the desired set time. Mix well. In a separate clean pail pour clean water of equal quantity to the amount of Superflex previously poured. Add SP-200 in accordance with Mix Ratio Table and mix well. If extended set times are required KF-500 (retarder) can be added to the resin side; please consult DeNeef Technical Service.


Gelacryl Superflex is pumped at 1:1 through a pump with all stainless steel wetted components. Always begin at the lowest pressure setting available on the pump and increase to the minimum pressure required to get desired resin flow.

Crack Injection: 

For concrete crack injection applications consult DeNeef Standard Crack Injection Procedures. Due to the ultra low viscosity of the Superflex resin, larger cracks may require application of a surface seal such as hydraulic cement or epoxy.

Curtain Wall grouting: 

For curtain grouting applications consult DeNeef Standard Curtain Grouting Procedures. Adjust set time to allow for permeation through soils surrounding the structure.

Confirm product performance in specific chemical environment prior to use.


Low temperatures will significantly elongate set times. For best results, bring product to a minimum temperature 50°F for a minimum period of 24 hours prior to use. If site temperatures are extremely low, material should be held in a warm area before and during use to maintain the products temperature. Allow no water into open containers. Do not apply when ice is present. DO NOT EXCEED 90ºF WHEN WARMING.


  • Water used to activate grouts (“B” side of mix) must be in a range of pH 5.5 – 7 for optimum grout quality.
  • Varying water pH will cause the reaction times to change.
  • Groundwater should be in the range of pH 3-12.

Health and Safety


TE-300 and SP-200 are incompatible with aluminum. Do not use aluminum equipment in the presence of TE-300 and SP-200.

In the event of an EMERGENCY call:

CHEMTREC 800-424-9300.

Always use protective clothing, gloves and goggles consistent with OSHA regulations during use. Avoid eye and skin contact. Do not ingest. Refer to Safety Data Sheet for detailed safety precautions. | North America customer service: 1-877-4AD-MIX (1-877-423-6491)

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

Tri-Flex® 15 is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.

In Canada, GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.

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Last Updated: 2021-02-05