ROUGH GUIDE TO USING MATERIALS
| FILLERS |
Fillers come in two catergories; ready to use and those you mix yourself.
The only one that you would normally mix yourself is filler bought in powder
form that you mix with water to form a paste. It is cheaper to mix this kind
of filler yourself than to buy it ready-mixed. This kind of filler,
e.g.Polyfilla, is used to repair cracks in plaster, holes and other
general repairs. Linseed oil Putty is only used to repair and fill holes
in wood, glazing around wooden and metal frames and windows. Brummer or wood
filler is used to repair holes in wood and dries rock hard so apply it as
smoothly as possible. |
| PRIMERS |
Primers are used to apply first coat to bare wood and metal. For galvanised
metal a special zinc primer must be used otherwise your subsequent coats
will eventually flake off. |
| SEALERS |
Sealers are used for preserving, waterproofing and preventing problems
occuring to subsequent coats caused by chemicals and fungi seeping through
from the underlying surface. Many different sealers are used to counteract
different problems. |
| UNDERCOATS |
Undercoats/basecoats provide the surface for the following finish coat.
This is by far the most important stage in getting a first class finish.
If necessary a second or even third undercoat should be applied if needed. |
| FINISHING COATS |
Gloss, semi-gloss, eggshell and matt are the usual type of finishes used;
a high-gloss finish being far the most common. It is often difficult to get
an undercoat to match various stronger colours and manufacturers normally
recommend two coats of finish. |
| EMULSIONS/LATEX |
These are paints, (which are water-based) for use on ceilings and walls.
They are easy to use and dry quickly. They can be used on interior wood but
lack the hard-wearing qualities of undercoat and gloss. |
| ABRASIVES |
A very important part of decorating is preparing the surfaces to be painted.
Sandpaper is the most commonly used material for rubbing-down. Sanding pads
are useful too. Lots of materials can be used, e.g. Pumice stone. |
| THINNERS |
The two most common thinners used are water(for emulsions/latex) and
Turpentine Substitute or White Spirit( for solvent based paints). Special
spirit thinners are needed for cellulose paints. |