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Filler shows through the paint
Make sure that all filled areas are rubbed down smooth and
level. You will need to prime the filler before painting to
prevent subsequent coats being absorbed more rapidly than on
other areas. Use a coat of Dulux emulsion thinned 10-20% with
clean water. Once this is dried you can apply a full coat of
Dulux emulsion.
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Foaming
Cause
Using the wrong type of roller can cause foaming of a paint film.
Sponge or foam rollers should be avoided with water-based paints.
Long pile rollers must be wetted out properly. Foaming happens
when air gets into the wet paint film to create air bubbles.
When these bubbles burst craters are left on the film surface.
Sometimes these craters dry to give an even film.
Putting it right
You will need to rub down using 'wet and dry' abrasive paper
using water or suitable solvent. The surface should then be rinsed
and allowed to dry before repainting. If this is impractical
due to the size of area affected the area could be horizontally
lined with lining paper and then repainted.
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Mud
cracking
Cause
The most likely cause of mud cracking is applying a thick, heavy,
unthinned coat of paint to a textured or embossed surface such
as blown vinyl wallpapers or pebbledash. This is especially true
if the paint was applied by brush.
Putting it right
One or two thinned coats of paints may fill in the cracks. For
internal walls, a soft sheen paint is the most suitable product
to use. If the affected area is over wallpaper, the best way
to solve the problem is to remove the paper and start again.
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Powdery
or chalky surfaces on outside paint work
Cause
This is caused usually by a wearing away of the paint film by
weathering.
Putting it right
The affected area should be brushed down with a stiff bristle
brush to remove as much powdery material as possible before applying
a coat of Weathershield
Exterior Stabilising Primer. It can then be re-painted in
your chosen finish.
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Cracking
of plaster
Cause
This is a common occurrence in new houses and is often the result
of plaster drying out or movement of the building.
Putting it right
Cracks should be cut out and all dust and debris removed. The
cracks should then be filled using an appropriate filler. The
Polyfilla range has a filler for every size of gap. This can
then be painted with your chosen finish.
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Mould
growth on exterior surfaces
Cause
Moisture is an essential element for the growth of moulds.
Putting it right
Affected areas should be treated with Weathershield
Multi-Surface Fungicidal Wash. Once rinsed and allowed to
dry it can be over coated with you favourite Weathershield Masonry
Paint.
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