Sagging paint ?

[colmac]

Have just been painting my well decks with Hammerite and, during a lull in proceedings, was reading the tin. The instruction said, " do not overpaint as this can result in paint sag"I was wondering if anyone could inform me how paint  "sags" Thank you.

[dave moore]

If overmuch paint is applied to a vertical- ish surface, a sag is the result, a drooping curtain of paint. Less likely on horizontal surfaces, but a pool can form that takes longer to dry.

[Tracy D'arth]

Hammarite is an odd paint. I think it has 2 incompatible solvents, one for the base colour and another for the hammer effect that separate slightly on drying. One dries before the other so on a vertical surface it can separate and sag if applied too heavily.

[colmac]

OK that makes sense on a vertical surface. I should be ok as my decks are horizontal, most of the time.

[Higgs]

6 minutes ago, colmac said:

OK that makes sense on a vertical surface. I should be ok as my decks are horizontal, most of the time.

 

Still be aware of using too much paint. You can still create uneven tensions in the surface that can lead to wrinkles. 

 

 

 

 

[mark99]

Any paint, if overapplied cause sag and curtains (same thing). Trust me I'm a expert in fecking it up. Less is more. There are shortcuts in life but too much wet film thickness is excluded.

Edited October 8, 2020 by mark99

[DHutch]

It's it hammered finish or smooth?

[colmac]

Hammered

[BWM]

If you overcoat too soon it often prevents the first coat from drying, particularly at this time of year. Probably the last thing you need on a deck.

[Bod]

30 minutes ago, colmac said:

Hammered

 

You will have to leave it at least 3 months to fully dry and harden.  Then in the spring grind down level, and recoat.

This type of paint, either has to be recoated in less than 3 hours, or left to fully harden, for several weeks.  The first creates a very thick blended covering, the second, 2 different layers, each fully cured.

 

Bod.

[monkeyhanger]

On 09/10/2020 at 09:44, Bod said:

 

You will have to leave it at least 3 months to fully dry and harden.  Then in the spring grind down level, and recoat.

This type of paint, either has to be recoated in less than 3 hours, or left to fully harden, for several weeks.  The first creates a very thick blended covering, the second, 2 different layers, each fully cured.

 

Bod.

You will possibly find it dangerously slippy when wet. I would seriously consider using a non slip paint.

[bizzard]

I had the sagging problem today when shifting coal bags about. I couldn't seem to walk proper like, couldn't stride.  Me underpants elastic had busted and they were sagging down around my knees.

Edited October 11, 2020 by bizzard

[beerbeerbeerbeerbeer]

1 hour ago, bizzard said:

I had the sagging problem today when shifting coal bags about. I couldn't seem to walk proper like, couldn't stride.  Me underpants elastic had busted and they were sagging down around my knees.

I’m getting to that age too, where mine are beginning to sag down to me knees without support. 

[robtheplod]

On 08/10/2020 at 09:47, colmac said:

OK that makes sense on a vertical surface. I should be ok as my decks are horizontal, most of the time.

Thats good to know!! 

[colmac]

Thanks all. Painted it now and boat winterised until next year so no dramas with drying time.