FAQ
You will find answers to many of your questions here:
When to apply the Priming Coat?
The Priming Coat is applied on façades that need to be finished in Distemper, but on surfaces where the Distemper does not have sufficient coverage.
How much Priming Coat is needed?
Usage is determined by the type of substrate, its moisture-content surface, the dilution of the Priming Coat and the painting technique.
As a specification, we advise: 2 kg/m², unless deeper grouts need to be filled.
Once you have started work (after about 10 m²), it is advisable to check the usage and possibly add some extra moisture to the substrate, or to dilute the Priming Coat a bit more.
Can the Priming Coat be removed?
The Priming Coat cannot be removed, but can be painted over with classic façade paints once it has hardened completely.
Which substrates are suitable for the Priming Coat?
The substrate needs to be homogenous, mineral and absorbent, and dust- and grease free.
Non homogenous surfaces could show colour nuances because of the various absorption levels.
Moistening can improve the homogenous absorption of non homogenous façades.
Façades that are not sufficiently absorbent (certain wire-cut-bricks with low porosity <5%), will not absorb the badgeon as well, which has a negative effect on the adhesion. Bricks with low porosity do not need to be moistened, or less so, beforehand.
What preparation is needed for the substrate?
Clean the substrate with a high-pressure cleaner. Remove all moss.
Moisten before applying paint (check for sufficient absorbency).
Do not apply any primer or impregnation layer as this will reduce absorption.
Façades that have been treated with water resistant products in the past are not suitable.
What about bad grouting?
The Priming Coat can be applied to very old, damaged façades. Loose grouting needs to be removed. Cracks in the grouting are not a problem.
If deep grouts need to be filled, it is very important to work in two layers and to let the first layer of the Priming Coat dry completely. After it has dried, there will be some contraction cracks which will be filled perfectly by the second layer.
Drying time of the Priming Coat?
The drying time is determined by several factors (climatic circumstances, thickness of the layer, substrate) and ranges between ½ an hour to 6 hours. When weather conditions are misty or rainy, it might take several days.
When the colour of the Priming Coat turns lighter, it is dry.
The drying time may be influenced by the moisture level in the substrate.
How long can one work with the Priming Coat once it has been prepared?
The Priming Coat is hydraulic; once mixed with water the Priming Coat can be used for between 3-5 hours.
How is the Priming Coat powder prepared?
Take the 20 kilo bag of Priming Coat powder
Fill a tub with at least 8 litres of water
Add the powder to the water and leave for 5 minutes (the powder absorbs the water, do not add anything else) and then mix to a homogenous mass
If necessary add some more water to get the desired consistency, depending on substrate and technique