Browse Forums General Discussion 1 Jan 30, 2012 1:20 pm Hi The house I live in has a second storey extension with what I believe to be clad with aluminium vinyl cladding. Downstairs is timber weatherboard. I believe that the extension was done in the late 1970s or 1980s. It is white. The house downstairs has been repainted at least once but needs to be redone. The upper storey cladding has some blisters and also peeling, revealing a silvery base (aluminium or galvinised steel). I would love to change the colour of the house from white thus it seems like a good time to have the whole house repainted. I think that with a light sand that the upper storey (ie. possible aluminium vinyl clad) walls should be able to be painted with a quality acrylic paint such as Taubmans Endure, however should I consider an undercoat? I do not want to overcapitalise on this old house, just keep up the maintenance. However, I have not to date priced out the cost of scaffolding required to repaint the upper storey section to compare this to recladding. Paintme Re: Painting old cladding 2Jan 30, 2012 3:19 pm paintme The upper storey cladding has some blisters and also peeling, revealing a silvery base (aluminium or galvanized steel). I think that with a light sand that the upper storey (ie. possible aluminium vinyl clad) walls should be able to be painted with a quality acrylic paint such as Taubmans Endure, however should I consider an undercoat? If the paint is blistering and peeling leaving bare aluminium/galv the bare patches will require etch priming again to assist the paint adhering. If it has been painted in oil-based enamel, and you want to swap to acrylic, once you have got rid of the loose bits and etch primed, it must be undercoated first as acrylic wont adhere to enamel. A paint professional will be able to advise you further Arfur Re: Painting old cladding 3Jan 30, 2012 5:47 pm Thanks Arfur. I am not sure what etch primed means, maybe scratching with steel wool? I tested a small area with methylated spirits and the top coat seems to be enamel rather than acrylic as it did not rub off. Paintme Re: Painting old cladding 4Jan 30, 2012 7:12 pm Taubmans 3 in 1 sealer primer undercoat specs: http://specif-i.com.au/Content/Product/D826.pdf * Primer for galvanised steel * repaint over aged enamel particularly for water based topcoats could I get away without the etch primer, spot the patches and then apply of this undercoat? Paintme Re: Painting old cladding 5Jan 31, 2012 1:32 am I haven't used that product, but IF you have doubts call into a paint Trade Depot (NOT Bunnings) and ask. Have you tested by rubbing with metho to make sure its oil based enamel? The problem with aluminium is once its open to the elements again it forms a protective layer which paint usually wont adhere to. An etch primer is what the name entails, it etches into the surface providing a bond. I learnt this from an old mate who painted small aluminium boats Google == http://citypainting.com.au/page2.html -- Ive no connection, but have a read Arfur Standard uninsulated double brick has an R value of around 0.7. An insulated standard 90mm stud timber frame can have an R value of around 2.7. Even if you insulate a… 17 12049 The spacing of the studs looks pretty large especially for a load bearing wall. 3 11118 Re my second point – yes exactly. And often it may take additional time if the manufacturer recommends no more than X meters… 3 5646 |