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Concrete flooring screed

Bauflex Primer - joints surface primer

Primer for sealants.

Surface primer for sealantsBAUFLEX PRIMER is ready to use polyurethane primer for joint sealants.








  • BAUFLEX PRIMER is used as a primer to obtain a proper bond of the sealant to the concrete joints

For professional use only.


  • Ready to use
  • Increases the adhesion of sealants to concrete

BAUFLEX PRIMER can be used at ambient and surface temperature +10°C ‐ 25°C only, air moisture max. 80%. Existing joints must be dry and free of any moisture (humidity < 4%). Working areas should be well ventilated and protected against access by unauthorized persons and to maintain a protection zone against an open flame, especially the welding work.


After 28 days joints should be increased to the correct width and depth. The edges of the joints should be beveled using angle grinder. Vacuum joints thoroughly. Surface must be clean, dry, homogeneous, free of grease, dust and loose particies. Old paints, cement wash, loose particies must be removed.


BAUFLEX PRIMER is ready to use. Product should be properly mixed before use.



After vacuum, insert polyethylene cord BAUCORD to the correct depth. BAUCORD diameter should be about 25% larger than the width of the joint. Prime the beveled edges and sides of the joints using BAUFLEX PRIMER and leave for about 60 minutes, when the primer becomes tacky. Apply BAUFLEX PRIMER with a narrow brush. Pay attention not to dirty the surface.

Sealant primer - Technical sheetpdf




Clean all tools and application equipment with acetone immediately after use. Hardened material can only be removed mechanically.


BAUFLEX PRIMER is physiologically indifferent to the human organism after hardening. Uncured component are harmful to the health. Rooms in which works are carried out must be well ventilated. Workers should use protective clothing, shoes, glasses and gloves. In case of contact with the skin, immediately wash off with acetone, flush the water with soap and use the cream. Avoid contact with eyes. If contact occurs, seek medical attention. The components are harmful and can not get into the drains and groundwater. Keep out of reach of children.


All the information herein refers to products stored and used according to our recommendations, has been presented in good faith and takes into account the current state of knowledge and experience of BAUTECH. You are obliged to use the product in accordance with its intended purpose and BAUTECH’s recommendations. All the techni‐cal information provided is based on laboratory tests and trials. Out‐of‐laboratory tests may give different results due to the conditions, location, manner of application and other circumstances that are out of BAUTECH’s control. Any different recommendations issued by our employees must be made in writing; otherwise, they shall be deemed null and void. These instructions replace all the previous ones and make them void.


1 l


6 months from the date on the packaging, if stored in original, tightly closed packaging, in ventilated rooms, at the temperature between 5°C and 25°C. Protect from direct sunlight. Protect from freezing. 





approx. 1,0 g/cm3

Humidity of surface

poniżej 4%


1 l/approx.300 m

Application temperature

+10°C - +25°C


Tags: sealant, primer, dilatation, prime, surface, pcc, flooring, screed, system


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Call Phone +48 22 716 77 91

Contact details

© 2021 All right reserved. BAUTECH sp. z o.o. ul. Staszica 25, 05-500 Piaseczno k. Warszawy tel. 22 716-77-91, fax 22 716-77-90, NIP 522-000-09-96, Regon: 012547108, KRS nr 0000166495 Sąd Rejonowy dla Warszawy, XIV Wydział Gospodarczy KRS, share capital: 51 000 PLN, bank account PKO BP S.A. 57 1020 1068 0000 1502 0146 4957

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