HOW TO PREPARE INTERIOR SURFACES BEFORE DECORATING
Before you tackle your paint job, it is important that you make sure you have the
right equipment. Taking shortcuts or using low quality equipment can cost more
time and expensesin remedial work.
Specific paint rollers, brushes and tools have been developed for every painting
application. Choosing the right equipment and using the correct technique will
result in a painting job that is faster, cheaper and easier to use than alternative
Painting equipment checklist:
* Recommended Paint Roller
* Matching roller frame
* Matching paint tray and tray liners
* 3 metre aluminium extension pole
* Synthetic Paint Brush 60mm (We recommend Selleys brushes)
* Synthetic Paint Edger 38mm
* Drop Cloths
* Masking Tape
* Paint Mixer
* Paint Pads for varnishing
* Correct surface preparation filler
* Filling knife
* Sanding block and or pole sander
* Synthetic Paint Brush 60mm (We recommend Selleys Spirit brush range)
Mould should be treated and removed before redecorating. To remove mould,
use a hypochlorite (household bleach) solution, diluted 1 to 3 with water. Wear
gloves and goggles to protect your hands and eyes and protective clothing to
protect skin from splashes. Apply the solution with a thick scouring pad and
highly abrade the surface to ensure physical removal of any stubborn areas of
mould growth. Leave the solution on the surface for 15 minutes then wash down
thoroughly with clean water. If residual stains are left, spot undercoat with
Dulux Preplock Stain Blocker Shellac Based. Mould grows in a particular
environment. To discourage the regrowth of mould, try to improve the
ventilation in the affected area. Recoat with Dulux Mouldshield Low Sheen or
Semi Gloss when redecorating to discourage the regrowth of mould.
Stripping woodwork f the paint needs to be stripped back, the most common method is to use a
heat gun or a chemical stripper such as Selleys Kwik Strip Smart. For small
areas, a manual or drill mounted wire brush or dry scraper may be adequate.
You may choose to use a remover solution such as Polypaper Peel, or hire a
steaming machine. Newer vinyl wall covering can often be peeled off dry by hand.
They may leave a backing paper residue, which can be removed by sponging on
warm water and peeling it off or scraping it with a broad-bladed scraper. Many
types of wallpaper, however, are less cooperative and may require scratching
with a very coarse sand paper to help the water or solution to penetrate.
Preparing Powdery, Chalky and Peeling Surfaces
Paint that peels, or flakes away, from the surface, and is powdery or poorly
bound, should be removed.
The surface should then be cleaned thoroughly and when dry, resealed with an
oil based sealer such as Dulux Prepcoat Sealer Binder. When repainting allow
sufficient time for the Sealer Binder to dry and cure if coating with an acrylic
paint (water based) i.e. 2-3 days.
Painting Over Water Stains
Firstly ensure that you know the source of the stains e.g. water. Then check the
adhesion of the existing paint by doing an adhesion test refer ‘Check if your old
paint is sound’ If the existing coating is sound, you then need to wash the
surface down with sugar soap and allow to dry before applying Dulux 1 Step Oil
Based Primer Sealer Undercoat to “seal” the stain before applying a topcoat.
Filling and Patching
There are a number of fillers that can be used to fill holes in wood. Two
products suitable for use on interior wood are Selleys Plastic Wood and Polyfilla
Ready to use Interior Timber. Simply make sure the hole is clean and apply the
filler with a spatula or putty knife. Where movement is likely to occur, in places
like the joins between architraves and walls, a flexible filler such as Selleys No
More Gaps is recommended.
Filling holes in plasterboard or hard plaster is simple. Scrape away any loose
paint and plaster, and fill the hole using Selleys Spakfilla Rapid.
If the edges of holes are cracked and unstable, a self-adhesive patch will make
the job easier. Larger holes in plasterboard will need a patch inserted such as
Polyfilla Patching tape. Cut away the damaged section and use contact adhesive
to put in wood or plasterboard backing strips, then fix the patch onto the strips. A quick wipe with a damp sponge before the filler sets will take out small ridges
and save sanding time later.
Remove all the dust from the surface by wiping down with a damp cloth, apply
one coat of Dulux 1 Step Acrylic Primer Sealer Undercoat to the walls & ceilings.
For the walls you can use Dulux Wash and Wear 101 Advanced in the gloss level
of your choice and Dulux Ceiling White on the ceiling. Note: For a bathroom area
we would recommend Dulux Wash and Wear 101 Advanced Semi Gloss or
Aquanamel Semi Gloss. If your bathroom has a tendency to form mould on walls
or ceilings, then you should consider using Dulux Mouldshield.
Surfaces must be sanded smooth before paint is applied. Plaster and patched
areas should be sanded smooth with a medium then a fine grade sandpaper. A
coat of Dulux 1 Step Acrylic Primer Sealer Undercoat should be applied to
prepare the surface for the top coat. New woodwork should be sanded with a
medium grade sandpaper in the direction of the grain and primed with one coat
of Dulux 1 Step Acrylic Primer Sealer Undercoat or Dulux 1 Step Oil Based
Primer Sealer Undercoat to prevent tannin staining and provide excellent
adhesion. Previously painted surfaces, especially gloss and semi gloss surfaces
need to be sanded thoroughly to roughen the surface so the paint forms a
strong key for the new paint to adhere to.
A Final Check
Before painting, give your work a final clean and check. Wipe the walls
thoroughly with a damp cloth and wipe the woodwork using a cloth soaked in
methylated spirits, to remove any remaining grime or dust.
(Via the Dulux website www.dulux.com.au)