Painting Advice for Weather Affected Exterior Surfaces

The products you will need to use depends on whether you are painting over affected surfaces or painting new surfaces.
Refer to the below information, in conjunction with label instructions, to guide you in your product selection.

Advice for painting affected surfaces


1.
Determine if the surface is sound
Conduct an adhesion test on all previously painted surfaces. Ensure surface is sound by cutting a small X through the existing paint with a sharp blade, press cellulose tape firmly across the cut and then rip off the tape.  If the paint comes off, it is unsound and should be removed.  Repeat at random in a number of areas to test the surface.
Scrape off all loose and flaking paint and ensure the surface is dry.

2. Does the surface exhibit mould?

Mould

Surface Preparation:
Remove all mould and 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 timber

Recommended Products
Topcoat:
Dulux Weathershield

3. Is the surface peeling or flaking?

Peeling

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

Recommended Products
Topcoat:
Dulux Weathershield

4. Is the surface blistering ?
 Blistering

Surface Preparation:
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 for painting new surfaces


1.
Painting new exterior timber surfaces
Timber

Surface Preparation:
Timber- Fill nail holes with a flexible, exterior woodfiller. Sand all dressed timber.

Recommended Products:
Topcoat:
Dulux Weathershield 

2. Painting Exterior Brick, Masonary, Fibro Cement Surfaces

 Brick

Surface Preparation:
Unpainted masonry should be cured for 28 days before painting. Ensure surface is sound by conducting an adhesion test 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 

 

More information, please contact Dulux Customer Service on 13 23 77

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