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acces s spec i f i c a t i on i n fo rmat ion on l i ne a t www. re sene. com.au o r www. re sene. co.n zm in im i se the e f f e c t o f you r p ro j e c t on the env i ronment – see the Resene webs i t e

If in doubt about any aspect of your specification please contact Resene.

D803

General

Bitumen substrates start their life as soft solvent sensitive materials but, when exposed to the

atmosphere for long periods, oxidise to hard solvent insensitive materials. If painted early the bitumen

will remain soft underneath and in some circumstances bitumen may be overcoated with very fast

evaporating solventborne paints, such as roadmarking paints. When bitumen is overcoated early in

its life with acrylic systems, the bitumen will remain soft for a very long time. EPDM substrates have a

high mineral oil content that can pull through solventborne paint systems, affecting the adhesion.

The key aspect in painting baked enamel surfaces is adhesion. These surfaces are difficult to

adhere to and require a special adhesion primer. Once primed the materials may generally be

treated as normal. Polyethylene and polypropylene however, are exceptionally difficult and even

special adhesion promoted primers do not develop what could be categorised as excellent adhesion.

Furthermore, these materials soften under the influence of heat and overcoating with dark colours

should not be used.

Building plastics, such as UPVC, may be directly overcoated with good quality adhesion promoted

waterborne finishes. These thermoplastic materials are sensitive to solvents and may also soften

under the influence of heat. Dark colours should not be used to avoid warping.

Canvas may be subject to all weather conditions and is prone to mould growth. Ensure all cloth

surfaces, such as exterior umbrellas, are dry before folding or storing away.

Surface preparation

Baked enamel substrates

Most old COLORBOND®/COLORSTEEL® roofs may be treated as for normal repaints, using a full coat

of Resene Galvo One (see Data Sheet D41) as the primer once the surface has been prepared.

D803.1 Clean surfaces

Thoroughly wash down with Resene Paint Prep and Housewash (see Data Sheet D812) to remove all dirt, dust, grease, chalk, cobwebs

and other contaminants. Rinse thoroughly with clean water. Allow to dry.

D803.2 Remove all moss and mould

Thoroughly clean down to remove all loosely adhered material. Treat areas of moss or mould infestation with Resene Moss & Mould

Killer (see Data Sheet D80) correctly diluted with clean water. Leave for up to 48 hours to achieve full kill. For heavy infestations

further applications may be needed. Wash thoroughly with clean water to remove residues.

Bitumen substrates

Refer above for the following surface preparation clauses.

D803.1 Clean surfaces

D803.2 Remove all moss and mould

Building plastics (UPVC), Perspex, polycarbonate and polystyrene

Refer above for the following surface preparation clauses.

D803.1 Clean surfaces

D803.2 Remove all moss and mould

Feb 2010

Continued over

Miscellaneous surfaces

including bitumen, fabric, plastic

and rubber

Referred to in Resene specification sheets:

10 Bitumen surfaces, butyl and EPDM rubber

11 Baked enamel systems (COLORBOND®/COLORSTEEL®), polyethylene and polypropylene

12 Acrylic sheeting (Perspex), glass reinforced epoxy (GRE), glass reinforced polyester (GRP), polycarbonate, polystyrene and unplasticised PVC

16 Canvas, hessian and Scandatex

For smoke damaged surfaces see D86

For repaints see D87

Continued

In New Zealand: Resene Paints Lim

ited, Vogel Street, PO Box 38242, Wellington M

ail Centre, Lower Hutt 5045

Phone 0800 RESENE (737 363) Fax (04) 577 0600 Email advice@

resene.co.nz or visit ww

w.resene.co.nzIn Australia: Resene Paints (Aust) Lim

ited, 7 Production Ave, PO Box 785, Ashmore City, Queensland 4214

Phone 1800 738 383 Fax 1800 064 960 Email advice@

resene.com.au or visit w

ww

.resene.com.au

acces s spec i f i c a t i on i n fo rmat ion on l i ne a t www. re sene. com.au o r www. re sene. co.n zm in im i se the e f f e c t o f you r p ro j e c t on the env i ronment – see the Resene webs i t e

If in doubt about any aspect of your specification please contact Resene.

Printed on environmentally responsible paper, which complies with the requirements of environmental management systems FSC Chain of Custody and ISO14001, using vegetable-based inks. Please recycle.

CanvasRefer above for the following surface preparation clauses.

D803.1 Clean surfaces

D803.2 Remove all moss and mould

D803.3 Treat with water repellent

Coat canvas with Resene Aquapel (see Data Sheet D65).

Glass reinforced epoxy (GRE) and glass reinforced polyester (GRP)

Refer above for the following surface preparation clauses.

D803.1 Clean surfaces

D803.2 Remove all moss and mould

D803