Technical Data Sheet

Date: 01.06.2011 – Version 10

e-lastic Aqua Primer A+B (Epoxy Primer, water based)

Product description

e-lastic AQUA PRIMER A+B is a transparent, rigid, two component epoxy primer. Water-based. Used as a universal primer in waterproofing, sealing and floor coating applications on absorbent and non-absorbent surfaces. Cures by reaction (cross linking) of the two components.


  • Simple application (roller or brush).
  • Excellent anchoring to absorbent and non-absorbent surfaces.
  • Can be applied on moist surfaces, without loss of adhesion.
  • Resistant to stagnating water.
  • Can be diluted with water.
  • Provides high tensile and impact strength.
  • Heat and frost resistant.
  • Stops the creation of dust.
  • Chemical resistant.


e-Lastic AQUA PRIMER A+B is mainly used as a primer for polyurethane waterproofing coatings, polyurethane joint sealants and polyurethane and epoxy floor coatings on non-absorbent surfaces like:

  • Power floated concrete
  • Metal (various)
  • Asphalt
  • Bitumen felts
  • Ceramic Tiles
  • Glass
  • Old Acryl-based coatings, etc.

It can also be used as a primer on absorbent surfaces like concrete, mortar, plaster, etc. It can also be used on moist concrete surfaces.
It is also used as a tack-coat between coating layers if intercoating time intervals are overstepped.


100 - 200 gr/m2 in one or two layers. This coverage is based on practical application by roller onto a smooth surface in optimum conditions. Factors like surface porosity, temperature, humidity, application method and finish required can alter consumption.


e-Lastic AQUA PRIMER A+B is supplied transparent.


Technical Data *

Composition Epoxy resin + Hardener. water based  
Mixing Ratio A : B = 3 : 1  
Adhesion to aluminium >2 N/mm² ASTM D 903
Adhesion to moist concrete (6%) >1,5 N/mm² (concrete failure) ASTM D 903
Hardness (SHORE A Scale) >95 ASTM D 2240
Resistance to Water Pressure No Leak (1m water column, 24h) DIN EN 1928
Service Temperature -30°C to +90°C Inhouse Lab
Application Temperature 10°C to 35°C Conditions: 20°C, 50% RH
Pail Life once opened 45 - 50 minutes
Overcoating time 6-12 hours
Final Curing time 7 days

* All values represent typical values and are not part of the product specification.

Product Application

Surface Preparation

Careful surface preparation is essential for optimum finish and durability. The surface needs to be clean and sound, free of any contamination, which may harmfully affect the adhesion of the primer.

Maximum moisture content should not exceed 7%. Substrate compressive strength should be at least 25MPa, cohesive bond strength at least 1.5MPa. Old coatings, dirt, fats, oils, organic substances and dust need to be removed by sanding. Possible surface irregularities need to be smoothed. Any loose surface pieces and grinding dust need to be thoroughly removed.

WARNING: Do not use a metal-ball blasting machine to grind the surface, because the heavy metal-ball impacts destroy the cohesion of the concrete surface and lower its stability.


AQUA-PRIMER Component A and Component B should be mixed with a low speed mechanical stirrer, according to the stipulated mixing ratio, for about 3-5 minutes.

NOTE: The mixing of the components has to be effected very thoroughly, especially on the walls and bottom of the pail until the mixture becomes fully homogeneous. Dilute mixture with 15-25% of clean water, to regulate viscosity.


For best results, the temperature during application and cure should be between 5°C and 35°C. Low temperatures retard cure, while high temperature speed up curing. High humidity may affect the final finish.

Apply the e-Lastic AQUA-PRIMER (diluted with 15-25% clean water) by roller or brush, until the surface is covered. After approx. 6-12 hours (not later than 24 hours) and while the primer is still a bit tacky, apply the polyurethane coating or the polyurethane joint-sealant.

RECOMMENDATION: If the surface is very brittle, like lightweight concrete or porous cement screed, apply two layers of e-Lastic AQUA PRIMER.

ATTENTION: Please ensure consumption within the Pail Life.

WARNING: Do not apply the e-Lastic AQUA-PRIMER, at ambient and ground temperatures under 10°C.


e-Lastic AQUA-PRIMER is supplied in 15+5kg and 3+1kg pails. The product may be stored in a dry and cool environment for up to 9 months. Protect the material against moisture and direct sunlight. Storage temperature: 5°C to 30°C. Product should remain in it's original, unopened containers, bearing the manufacturers name, product designation, batch number and application precaution labels.

Safety measures

e-Lastic AQUA-PRIMER contains amines and epoxy resins. See information supplied by the manufacturer. Please study the Safety Data sheet.


Our technical advice for use, whether verbal, written or in tests, is given in good faith and reflects the current level of knowledge and experience with our products. When using our products, a detailed object-related and qualified inspection is required in each individual case in order to determine whether the product and /or application technology in question meets the specific requirements and purposes. We are liable only for our products being free from faults; correct application of our products therefore falls entirely within your scope of liability and responsibility. We will, of course, provide products of consistent quality within the scope of our General Conditions of Sale and Delivery. Users are responsible for complying with local legislation and for obtaining any required approvals or authorisations. Values in this technical data sheet are given as examples and may not be regarded as specifications. For product specifications contact our R+D department. New editions of our technical data sheets will supersede previous technical information and render it invalid. It is therefore necessary that check regularly on our website and refer to any information provided with product deliveries to ensure you are using the latest information and current code of practice.