Previously painted substrates
When painting over a water-based acrylic paint, provided the surface is clean, sound and sanded to remove gloss, Porter&rsquo ; s Aqua Enamel is selfpriming and can be applied direct. All varnishes, polyurethanes or surfaces previously painted with oil-based enamel paint should be thoroughly sanded to remove gloss and to create a &ldquo ; keyed&rdquo ; surface. Loose, peeling or flaking paint must be made sound by scraping off loose paint. Fill nail holes and cracks with suitable filler, sand and dust off. Spot prime all joints and repaired areas with Porter&rsquo ; s Universal Primer, then apply one coat of same to entire area. Touch dry 2 hours. Allow 6 hours dry time between coats and 24 hours dry time prior to the application of Aqua Enamel.

Complementary products
Porter’ s Universal Primer (coverage 10m² per litre) is also recommended. Gives a smoother overall result. Mineral Silicate Primer (coverage 10m² per litre) is recommended for priming new set plaster before undercoating.

Substrate should be a clean well-held surface free from loose material, dirt, grease, oil and mould. Dust down before proceeding. On bare surfaces such as new unpainted plasterboard sheeting, render, brick or timber, spot prime all joints and repaired areas with Porter’s Universal Primer, then apply one coat of same to entire area. Touch dry 2 hours. Allow 6 hours dry time between coats and 24 hours dry time prior to the application of Aqua Enamel. On new unpainted fresh set plaster do not proceed until plaster has thoroughly set and has dried completely. Firstly, apply 1 coat Porter’s Mineral Silicate Primer by brush or roller. Touch dry 20 minutes. Allow 2 hours dry time. Then apply by brush, roller or spray 1 coat Porter’s Universal Primer. Touch dry 2 hours. Allow 6 hours dry time between coats and 24 hours dry time prior to the application of Aqua Enamel.

Do not apply paint if Relative Humidity is above 85% or temperature is within 3°C of Dew Point. Do not apply if the surface temperature is greater than 30°C or below 10°C, or likely to fall below 10°C during the application or drying period. Stir thoroughly prior to use. Apply two coats by brush, short nap roller or spray. Touch dry in 1 hour. Allow minimum 3 hours dry time between coats. Allow 8 hours dry time.