Porthole Posted February 16, 2022 Share Posted February 16, 2022 Can I please ask is Hammerite no 1 anti rust beater OK to use on an old steel beam which has signs of rust? It's still sound and structural engineer said just sand and treat with galvanoid. I can't find galvanoid so just thought I'd get what I could from Screwfix Thank you Link to comment Share on other sites More sharing options...
Russell griffiths Posted February 16, 2022 Share Posted February 16, 2022 You can buy cold galv spray in screwfix and toolstation. You will need to wirebrush it down and remove any dusty bits. Link to comment Share on other sites More sharing options...
redtop Posted February 16, 2022 Share Posted February 16, 2022 My wife runs a powder coating business so gets shed loads of stuff galvanised. Havnt used the spray stuff but typically the steel has to be super clean for it to take properly otherwise it peels. They use acid baths to clean new steel and remove any impurities so old steel will be tough to clean for it to work properly. Link to comment Share on other sites More sharing options...
joe90 Posted February 16, 2022 Share Posted February 16, 2022 I use hammerite a lot, I find it seals rusty stuff well if applied thick enough (as long as flakey stuff removed), however the new water based stuff is rubbish in my opinion . Link to comment Share on other sites More sharing options...
redtop Posted February 16, 2022 Share Posted February 16, 2022 Just now, joe90 said: I use hammerite a lot, I find it seals rusty stuff well if applied thick enough (as long as flakey stuff removed), however the new water based stuff is rubbish in my opinion . Good old fashioned bitumen paint, so long as you don't mind the finish look. Like 'proper' creosote, water based stuff ain't as good unless you really really prep the surface 1 Link to comment Share on other sites More sharing options...
nod Posted February 16, 2022 Share Posted February 16, 2022 We had four beams to reuse on the front of the garage We used a silver paint purchased from a local boat yard For painting the underside of boats Cheap as chips No rust five years on 1 Link to comment Share on other sites More sharing options...
joe90 Posted February 16, 2022 Share Posted February 16, 2022 2 minutes ago, nod said: We used a silver paint purchased from a local boat yard For painting the underside of boats Any idea what paint this was ? Link to comment Share on other sites More sharing options...
nod Posted February 16, 2022 Share Posted February 16, 2022 I can’t remember the brand But it did say bilge and hull paint on the tin Bought from preston marina shop My wife picked it up The chap said normally lasts five years submerged Link to comment Share on other sites More sharing options...
SteamyTea Posted February 16, 2022 Share Posted February 16, 2022 https://www.resapol.com/product/galvafroid-400ml/ Link to comment Share on other sites More sharing options...
JohnMo Posted February 16, 2022 Share Posted February 16, 2022 Basics are. Remove rust, or remove all loose and convert to something else, with rust converter. Hamerite isn't that good any more as mentioned. A galvanizing spray with give the metal a sacrificial costing which will deplete prior to rust coming back. But sprays go on very thin. A brush zinc paint like the architect mentioned with give a longer lasting protection. If you are ok with a dull silver, something like a Rustoleom galvanizing spray, several good coats. If you want a different colour follow the painting instructions on the tin. You need a coating that is around 99% zinc. Or a zinc phosphate based epoxy primer as it bonds well, expensive but good. Link to comment Share on other sites More sharing options...
markc Posted February 16, 2022 Share Posted February 16, 2022 (edited) 1 hour ago, Porthole said: Can I please ask is Hammerite no 1 anti rust beater OK to use on an old steel beam which has signs of rust? It's still sound and structural engineer said just sand and treat with galvanoid. I can't find galvanoid so just thought I'd get what I could from Screwfix Thank you Galvafroid , not galvonoid, brilliant stuff, haven’t bought or needed any in years so not sure if you can still get it. Edited February 16, 2022 by markc 1 Link to comment Share on other sites More sharing options...
Tom Posted February 16, 2022 Share Posted February 16, 2022 +1 for the galvafroid, use it on my land rover. Next best thing to hot-dipping Link to comment Share on other sites More sharing options...
SteamyTea Posted February 16, 2022 Share Posted February 16, 2022 2 minutes ago, markc said: galvonoid That is for curing piles with an electrode. Link to comment Share on other sites More sharing options...
markc Posted February 16, 2022 Share Posted February 16, 2022 2 minutes ago, SteamyTea said: That is for curing piles with an electrode. Haha, can’t knock a bit of galvanic action Link to comment Share on other sites More sharing options...
SteamyTea Posted February 16, 2022 Share Posted February 16, 2022 16 minutes ago, markc said: Haha, can’t knock a bit of galvanic action Makes my legs twitch like a dead frog's. Link to comment Share on other sites More sharing options...
Porthole Posted February 21, 2022 Author Share Posted February 21, 2022 Thanks all for your comments and for clarifying it is galvafroid - no wonder I couldn't find it anywhere!! Link to comment Share on other sites More sharing options...
joe90 Posted February 21, 2022 Share Posted February 21, 2022 On 16/02/2022 at 10:52, JohnMo said: Hamerite isn't that good any more as mentioned. I am afraid a disagree . Yes the new water based stuff is pants but the old stuff is still as good as was and I use it a lot on outdoor tractor stuff. I will give this galvafroid a go as well ? Link to comment Share on other sites More sharing options...
JohnMo Posted February 21, 2022 Share Posted February 21, 2022 2 hours ago, joe90 said: I am afraid a disagree . Yes the new water based stuff is pants but the old stuff is still as good as was and I use it a lot on outdoor tractor stuff. I will give this galvafroid a go as well ? That's a confusing response. You disagree that hamerite in isn't as good as it was, then go on to say the new stuff is pants. The old stuff will be good - its not the new stuff. You can't buy it any more unless it's old stock. Link to comment Share on other sites More sharing options...
Porthole Posted February 21, 2022 Author Share Posted February 21, 2022 The new stuff actually says it is solvent based (Hammerite no 1 anti rust beater) , rather than water based? Is that ok then? Link to comment Share on other sites More sharing options...
joe90 Posted February 21, 2022 Share Posted February 21, 2022 7 minutes ago, JohnMo said: That's a confusing response. No, I said the new water based stuff was crap (IMO) but the old stuff is very good (and freely available). Link to comment Share on other sites More sharing options...
JohnMo Posted February 21, 2022 Share Posted February 21, 2022 What ever. I really wouldn't bother, there are better products mentioned above. Never really had much success with hamerite, new or old. Link to comment Share on other sites More sharing options...
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