Painting problems can be avoided if the decorator would simply follow
the paint manufacturers recommendations. This is mainly regarding correct
preparation of the surfaces along with the application of the correct
primers and or sealers, for all the various surfaces and substrates.
The
use of primers and sealers may place an extra cost to the painting project,
however the extra cost will be worthwhile as the lifespan of the surface
being painted will be extended.
Modern building products require scientifically blended paint coatings
which are formulated to deal with the fabrics porosity (suction) alkalinity
and other important factors.
Plaster sheeting and Paper faced plasterboard, just to name a few require
special needs and sealers to prevent possible top coats from peeling
and or flaking off.
Paper Faced Boards
Due to its surface having a nap or fluff, a water miserable or water
thinned sealer should be applied, which wets the nap and enables it
to relax and lay along the surface.
The sealers special binders and other ingredients provide greater penetration
into the face paper that gives good anchorage for the paint coatings,
thus preventing possible painting defects.
If the decorator is considering hanging wallpaper to paper faced board
then it would be advisable to apply an oil based alkyd coating to seal
and protect the face paper. Failure to protect the papers surface will
possibly result in it becoming wet and easily damaged.
Plaster Sheeting
Plaster type sheeting is formed in a type of mould thus the face of
the sheeting is produced with a dense glassy finish. This smooth, dense
facing tends to prevent normal water thinned coatings from penetrating
into its surface which may cause peeling and or flaking. Because of
this common problem it is advisable to apply an approved and recommended
sealer to achieve the penetration required.
Once a sealer is applied the following paint coatings will spread with
a lot more ease.
Harry's Tips
1) Before using a dry brush or roller sleeve in water thinned paints,
dampen them with water. This will prevent clogging of the bristles in
the brush or in the nap of the sleeve.
2) When washing water thinned paints from brushes and or roller sleeves,
wash them in a bucket of water rather than directly under the tap. This
will save lots and lots of precious water and money.