RepCon® H – SpecChem | The Duke Company


Consider The Duke Company your partner that can assist you with all your construction needs. We offer expert advice from our highly rated customer service. Furthermore, we offer the best values and fast delivery. For exceptional customer service & the fastest delivery in Upstate New York, call us for a prompt rental quote.



Or call the  Duke Company at:

585-292-9870  (Rochester NY)

607-347-4455  (Ithaca NY)

(585) 335-5970 (Dansville NY)



The Duke Company is proud to carry SpecChem products including RepCon® H

REPCON® H is a Single component polymer-modified horizontal concrete repair mortar. REPCON® H incorporates the latest in polymer technology offering superior durability, performance and ease of application in industrial, commercial and infrastructure applications.


  • One component, dry-polymer modified. Just add water.
  • Fiber-reinforced for added strength
  • Dry-polymer technology for excellent freeze-thaw durability
  • Easy to apply flowable/pumpable consistency
  • Natural concrete-gray color
  • Can be used for a variety of horizontal concrete repairs and over lays
  • Contains integral corrosion inhibitor



Surface Preparation: The concrete must be sound and free of all foreign material, including oil, grease, dust, laitance or other surface contaminants. For maximum durability, saw cut the perimeter of the repair 1/8” deeper than the depth of the repair, creating a notched, reinforced edge. Mechanically abrade the surface by an engineered approved method in accordance with ICRI 310.2 Guideline to a minimum CSP 5. All concrete surfaces to be repaired must be in a saturated-surface-damp (SSD) condition with no standing water on the surface. Priming/Scrub Coat: Thoroughly clean all exposed steel reinforcing of rust and coat with SpecPrep SB.

Prepared concrete must be SSD and primed with a spray or brush coat of SpecPrep SB and the repair mortar applied wet on wet or up to the recommended open time (see SpecPrep SB technical data sheet).
As an alternative, apply a scrub coat of the properly mixed repair mortar by scrubbing a thin layer into the predampened substrate with a stiff brush. Place the repair mortar immediately before the bond coat dries.

Add 4.5 – 5.0 pints (depending on desired consistency) of clean water per 50 pound bag of material. Mix with a low speed drill. Add recommended amount of clean water into the container, followed by slowly adding the REPCON® H powder. Mix 3 minutes. Mix only what can be applied within the setting period.

REPCON® H can be applied in applications from 1/4” to 2” in a lift.

Deep Applications: For repair applications over 2”, REPCON® H should be extended with clean, SSD, 3/8” aggregate up to 60% by weight (30 lbs) and mix an additional 2 minutes. This extension will add approx 0.17 cu-ft to the unit yield and should be placed within 20-30 minutes.
Extended mixes will depend on the gradation of the aggregate but normally will reduce compressive strength by 500 psi.

: Trowel, or screed REPCON® H firmly into the prepared area, ensuring intimate contact with the bonding surface. Finish REPCON® H level with the surrounding concrete and allow to take an initial set. After the initial set, when REPCON® H is surface hard, finish by hand

: Finish the repair material to the desired texture to best match the surrounding concrete. Do not add additional water to the surface during finishing. Lightly spray SpecFilm as a finishing aid on this and any other polymer modified mortars to assist in finishing. REPCON® H is self-curing under most conditions. In severe drying conditions, use an ASTM C-309 compliant, water based SpecChem curing compound.

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Coverage: 50 lb bag = approx 20 sq-ft @ 1/4”

*Please note, subject to equipment availability and seasonal demands, specific makes and models of rental equipment may not be available for rent or sale. The Duke Company will make every attempt to equip you with the right rental equipment and tools that will enable you to accomplish your project goals. Please contact the Duke Company in Rochester at (585) 292-9870 and Ithaca at (607) 347-4455 to check for the latest availability.

The Duke Company can assist you with your construction needs. We offer expert advice from our highly rated customer service. Furthermore, we offer the best values and fast delivery.


Or call the  Duke Company at:

585-292-9870  (Rochester NY)

607-347-4455  (Ithaca NY)

(585) 335-5970 (Dansville NY)


The Duke Company ships nationwide and throughout New York including:

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By David Szydlowski