Having
followed preparation and application of base coat in either Emulsion
or Casein (see Technical Information Sheets) one can apply our
NBT Transparent Colourwash, available in five colours, (see
Technical Information Sheet) or make your own Colourwash using Colour
Concentrate, )see Technical Information Sheets)
Application
Shake container before use. If making your
own Colourwash use 25% Colour Concentrate to 1 litre of Clear
Colourwash and shake vigorously. Pour into a paint tray or open container.
Apply to surface with a damp sponge or a wide soft brush. If applying
with sponge immediately soften with a 'softening brush' as per instructions
below.
Colourwash can be applied neat or diluted with up to 50% clear Colourwash,
depending on depth of colour required
Adding water lightens the colour and extends 'working' time. If the
Colourwash is too thick up to 25% of water can be added.
Casein Paint is very absorbent and needs sealing with one coat
of diluted Glaze Medium prior to Colourwashing. See Technical
Information Sheet
Instructions
Application A
Apply the Colourwash, with a wide brush using wide haphazard criss-cross
strokes , working quickly to avoid patchy areas. Work in approximately
one square metre areas, ensure you have a 'broken' wet edge so the next
area can blend in easily , work quickly from left to right until you
have completed one wall without stopping. Any 'patchy' areas can be
remedied with the next coat, 3 - 4 hours later or the next day. When
applying a second coat, concentrate on the patchy areas. If you are
using a strong pigmented colourwash, e.g.. Aqua or Terracotta, you may
wish to dilute the strength of colour with up to 50% clear colourwash
depending on depth of colour. This method of application gives a definite
'brush stroke' texture. For a softer look, see Application B below.
Application B
Using a damp sponge (at least 10cm x 15cm ) quickly apply your Colourwash
making large circular strokes completely covering approx. 1 square metre
of wall, leaving a 'broken' wet edge. Working quickly (for a large room
work with a partner, one applying with sponge and one 'softening' with
brush) take a specialist softening brush and apply long, wide crisscross
strokes to soften out the Colourwash, creating a very soft textured
finish. Work in this order until you have completed one wall from edge
to edge without stopping - otherwise there is a tendency to create uneven
streaks. Any patchy areas can be remedied with the next coat as outlined
in Application A.
Allow 3- 6 hours drying time between coats depending on room temperature.
Successive coats may be applied to create depth, either using the same
colour or a variation of colour. Colourwashes can be mixed, prior to
application , in varying proportions to create further colours.
Example: Apply 'Terracotta' Colourwash as above, once dry apply
a coat of 'Cane' Colourwash. The result will be an 'earthy' peach colour
. Note: The colour of the base coat (emulsion or casein) will always
affect the shade of the Colourwash applied. This gives tremendous scope
for an infinite number of colours. For example, 'Cane' Colourwash on
a blue base colour will result in a green/blue shade.
Note: Always carry out a colour test on white card or paper first.
Having followed preparation and application of base coat in either Casein
Paint see Technical Information Sheet 110 or Emulsion see Technical
Information Sheet 120 one can apply Transparent Colourwash, see Technical
Information Sheet 270
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