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Painting Garage & Rusty Nails (outside)
Stott - 29/8/10 at 07:25 PM

I want to paint my house and garage tomorrow (externally)

I've kinda picked Sandtex smooth due to the colours available but I have a problem.

The outside of my garage had hanging baskets at one point in its life, the evidence of which are the 2 rust marks down the wall. Also, in a few different places there were nails which have rusted. They were far too old and brittle to remove so I chopped them all flush a few years back to save the kids becoming pin cusions but they are still there (and orange).

The wall is dash at the moment and this is it's first coat of paint, my question is, what do I use to cover the rusty nail heads and the stains? Do I just paint over them or will it show through (which is often the case, as experience inside the garage has shown)

I don't want to be faffing about for ages with special primers if I can help it, but by the same token I don't want cream and rusty walls.

Any advice appreciated.

PS, painting as I'm trying to move so if it'll cover for a year or so I'll just paint over it I guess.

Cheers
Stott

[Edited on 29/8/10 by Stott]

stevebubs - 29/8/10 at 07:43 PM

I'd paint the nails with something plasticcy before applying the wall paint just to seal them in.

Got any no nails hanging around?

Peteff - 29/8/10 at 07:46 PM

Blob some mastic over them before you paint. It works for everything.

Stott - 29/8/10 at 07:47 PM

Got loads of cartridges of various stuff hanging about, I didn't think paint took too well to no nails etc though?

Mark Allanson - 29/8/10 at 08:58 PM

quote:
Originally posted by Stott
Got loads of cartridges of various stuff hanging about, I didn't think paint took too well to no nails etc though?


Generally its only silicone based products which cannot be over painted.

Chippy - 29/8/10 at 09:59 PM

If you have any "knotting" you can paint over them with that, it will stop the rust bleeding through. HTH Ray

Madinventions - 29/8/10 at 10:56 PM

Put a dob of Hammerite on the nail heads first to seal them in.

Ed.

britishtrident - 30/8/10 at 06:48 AM

Before doing anything else you need to treat the rust first with Naval jelly or other rust converter, then prime with zinc primer. Then put some type of paint or sealer to block the stain over the top.

Naval jelly (Phosphoric Acid) will also get rid of the stains in the existing render.

Cilit Bang --- for lime scale contains Phosphoric acid

[Edited on 30/8/10 by britishtrident]