Special
When to use and not to use (adhesive) primers and/or damp screens: the benefits and drawbacks
ADHESIVE PRIMERS ARE OFTEN ESSENTIAL FOR GLUEING THE ‘PERFECT SUBSTRATE’ IS STILL SOMETHING OF AN ILLUSION
Photo – Stauf
Primers can solve various ‘problems’, but they are usually associated with renovation. That view is sometimes right, but certainly not always. For instance, an adhesive primer is designed to even out the absorption capacity of the screed over the entire surface. The need for this will arise more often with renovation, but certainly not exclusively with renovation. Let’s be honest here: You know how it is in the building sector? The sector where lots of things can be done, but not always ‘properly’.
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Floor Forum International 109
Adhesion primer and absorption capacity The absorption capacity or porosity of the covering floor is vital for glueing parquet. That porosity can cause problems for floor fitters in many ways. A floor can be too porous so the glue cannot stick. In this case, the floor is probably not strong enough for glueing. A floor can be inadequately porous. If a covering floor is pressed so that it is too smooth, that can impede the glueing or you might need an adapted adhesive. Finally, a floor can show uneven porosity resulting in uneven adhesive bonding. In all the above cases, it is necessary to use a
