Painting advice for weather-affected surfaces

Painting advice for weather-affected surfaces

Given the prevalence of flooding across eastern Australia this summer, many customer service staff will find themselves assisting those with properties that have been affected by water.

Interior Surfaces

Common problems that need to be rectified include mould and water stains.

Mould on interior walls

Surface preparation:
Wash down with sugar soap and rinse with clean water to remove any dirt, oil or grease. In cases where mould or mildew is present, use a household bleach solution. Dilute one part bleach with three parts clean water.

Wear gloves and goggles. Use ascouring pad wet with bleach solution to lightly abrade the surface and ensure physical removal of stubborn areas of mould growth.

Leave the bleach solution on the surface for 15 minutes, then thoroughly remove by washing down with clean water and wipe dry. In very severe cases, repeat this action to remove all mould.

Scrape and sand down any loose, peeling and flaking paint. Fill any cracks or holes with a suitable filler. Sand gloss and semi gloss finishes to a dull, flat finish to allow a sound surface before top coating. Dust off.

Recommended products:

Undercoat:
Apply one coat of Dulux 1 Step Acrylic Primer Sealer Undercoat to any areas which have been repaired or which have an unevengloss level. For areas where paint has peeled, seal with Dulux Sealer Binder. If residual stains are left, spot undercoat with Dulux 1 Step Oil Based Primer Sealer Undercoat to ‘seal’ the stain before applying a topcoat.

Topcoat:
To discourage the regrowth of mould in  cool, damp or humid areas, apply two coats of Dulux Wash & Wear Kitchen & Bathroom. For all other areas, applytwo coats of Dulux Wash & Wear.

Painting overwater stains

For water stained surfaces that are sound (see adhesion test,to determine if the surface is sound) wash the surface down with sugar soap and allow to completely dry.

Recommended products:

Undercoat:
If residual stains are left, spot undercoat with Dulux 1 Step Oil Based Primer Sealer Undercoat to ‘seal’ the stain before applying a topcoat.

Topcoat:
In cool, damp or humid areas, apply Dulux Wash & Wear Kitchen & Bathroom. For all other areas, apply Dulux Wash & Wear.

Advice on painting new plasterboard

Many customers will have no choice but to replace water damaged interior surfaces, such as plasterboard. You can assist them to correctly paint their new surfaces by offering the following tips:

Surface preparation:
Remove all the dust from the surface by wiping down with a damp cloth.

Recommended products:

Undercoat Products:
Dulux 1 Step Acrylic Primer Sealer Undercoat.

Topcoats:
Dulux Wash & Wear and Dulux Ceiling White.

Exterior Surfaces

Advice on previously painted exterior surfaces

Surface preparation:
Conduct an adhesion test (see box) on all previously painted surfaces. Scrape off all loose and flaking paint.

Mould on exterior walls

Remove all mildew from the surface by scrubbing with a diluted household bleach solution (one part bleach, three parts water); wear rubber gloves and eye protection. Power washing is also an option. Rinse thoroughly, then prime any bare timber.

Recommended products:

Topcoat:
Dulux Weathershield.

Peeling or flaking

Prepare surface by removing all loose paint with a scraper or wire brush, sand rough surfaces, then prime bare timber.

Recommended products:

Topcoat:
Dulux Weathershield.

Blistering

If blisters go down to the substrate, first try to remove the source of moisture. Remove blisters by scraping, then sanding the surface.

Recommended products:

Topcoat:
Dulux Weathershield

Advice on painting new exterior surfaces

Some customers will be painting new exterior surfaces, if floodwaters have damaged the existing surfaces beyond repair.

Surface preparation:
Timber – Fill nail holes with a flexible, exterior wood filler. Sand all dressed timber. Brick, masonry, fibro and fibre cement board – Unpainted masonry should be cured for 28 days before painting. Ensure surface is sound by conducting an adhesion test (see box) and clear of any loose sand or cement.

Fill holes with grouting cement. Wash down with water using a stiff brush to remove all loose material. To remove efflorescence see can for details.

Recommended products:

Topcoat:
Dulux Weathershield