ADVICE & SOLUTIONS

FIXING TILES ON RIGID VINYL TILING

 
ADVICES PREPARATION APPLICATION FINISHING

Directly fixing tiles without removing the existing covering with or without primer

 

• HOMOGENEOUS PVC IN STRIPS (WITHOUT UNDERCOAT )

• TILES AND ASSOCIATED PRODUCTS WITHOUT ASBESTOS

 

Recommendations :

• The sound adhesion of the existing covering and its correct preparation are essential for a good result.


APPLICATION AREAS: Bonded coverings on concrete slabs or flooring, in UPEC P3 or E2* areas (maximum) classified areas such as: halls and passageways in schools and hospitals, classrooms, offices, private housing, etc.

 

* Not covered by this document :

– lE3 and P4 areas.

– Coverings bonded to wooden flooring

– Calcium sulphate based fluid screeds.

– Slabs and associated products containing asbestos.

 

SUBSTRATE PREPARATION

 

• Check that the semi-flexible tiles are well bonded by careful mechanical sounding over the whole surface and check that there are no fissures >or = 0.2 mm or outcrops

 

• All poorly adherent materials should be removed. If the unsound area represents more than 10 % of the total surface area, all of the covering must be removed. Check that the adhesive of the covering remaining on the substrate is hard and well adhered to the substrate and scrape off any traces of loose adhesive - Vacuum thoroughly.

 

• a) Preparation by sanding: sand down the covering to be conserved with a black abrasive disc, dry and remove dust. Then apply CERMIGRIP primer.

 

• b) Preparation by washing: wash the coating to be conserved with a caustic cleaning solution laver then rinse thoroughly. Check the surface tension of the covering (>30 mN/m) as per the CPT specification n° 3529. Apply CERMIGRIP primer depending on the adhesive mortar used.

 

• To level off eveness defects: use RAGREROC RAPID or RAGRENOV S30 (cf. Technical Data Sheets n° 215 and 230).

 

How to recognise a flexible tile able to receive adhesive bonded tiling?: it is brittle. If this is the case: apply CERMIGRIP primer


FIXING THE TILING

• Apply a coat of CERMIGRIP adhesion primer by roller over the whole prepared surface, then leave to dry (for around 2 to 4 hours).

 

• When fixing the tiles, allow for inter-tile joints of at least 3 mm, and a peripheral joint of at least 3 mm.


JOINTING

• Finish the joints after the adhesive has dried (24 to 48 hours) with CERMIJOINT, CERMIJOINT TX or CERMIJOINT SOUPLE for example.

 

• Water proofing: Please consult us.• Cracks and control joints should be treated as in the case of existing tiling cf. Advice Sheet n° 41.


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