Mineral Silicate Paint

[frog_hopper]

Hi,
Does anyone have experience with using a mineral silicate type paint? (commonly in Europe). Porters paints make this type of paint here in Australia. Just wondering if there are any negatives to this type paint?

It is supposed to last for 10 years or so (a lot longer than other masonry pains) and copes well with moisture - allowing the walls / bricks to breathe.

Why am I considering thie type of paint - I have seen several brick houses that have been painted / rendered, and the paint always seems to be flaking down near the ground level (think this is because of moisture coming up from the ground). This other stuff allows the bricks to breath.

This is what porter's paints say about it ....
"Porter's Mineral Paint is a premium silicate paint, providing unparalleled colourfastness and excellent durability. Mineral Paint chemically reacts with the substrate and the result is that the cured paint forms an inorganic structure with a very strong bond to the substrate which cannot crack, peel or flake."

Anyone?

[myla]

hello,

i looked comphrehensively into this product for a client,

and used a few sample pots, also another paint called sirex, unfortunatley a lot of the "modern"day silicate paints are blends that contain acrylic binders and still primarily function as typical acrylic paints,

porter's will gladly confirm acrylic binders is a component,

you could make your own by purchasing potassium silicate from PQ australia and oxides from someone like ability,

the wall you are coating must have cement or lime in it to work, so basically porous, so to test it you splash water onto it should immediately darken,

an original formula works but it is more likely a rustic patchy finish because of its "natural" components (similar to lime paints, oxide tinted renders), as people wanted greater colour range and more "pristine" finishes so the acrylics became a part of the formula's

thankyou

myla

[frog_hopper]

Thanks for your feedback. Interesting to note that they are acrylic based.

frog_hopper