Jump to content
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Sign in to follow this  
Gra73

Johnstone’s Garage Floor Paint

Featured Posts

6 hours ago, Gra73 said:

Can anyone attest to the use of Johnstone’s Garage Floor Paint on their Stern Decking?

 

 

Looks like a 'NO' then....!

 

Garage floor paint has two problems. Firstly it is formulated for use in dry conditions, it may not cope with prolonged rain well. Secondly is is not resistant to UV sunlight radiation. 

 

If you decide to use it, do let us know how durable it turns out to be. 

Share this post


Link to post
Share on other sites
18 minutes ago, Mike the Boilerman said:

Garage floor paint has two problems. Firstly it is formulated for use in dry conditions, it may not cope with prolonged rain well. Secondly is is not resistant to UV sunlight radiation. 

Thirdly, as it is largely impervious to Water it is very slippery when wet. 

Share this post


Link to post
Share on other sites

Fourthly, is your rear deck concrete? It may not adhere too well to other substrates or be flexible enough. 

Share this post


Link to post
Share on other sites

Ora, there's another thread running where the subject is floor paint on the roof - you may find that helpful.  I'm in the camp that says use the right paint for the right job so I'd just use a deck paint and remove the doubt, but floor paint does seem to have its followers. It is, however, not formulated for exterior steelwork on boats as I'm sure Johnstones themselves would be the first to advise if asked. Good luck.

Share this post


Link to post
Share on other sites
8 hours ago, WotEver said:

Thirdly, as it is largely impervious to Water it is very slippery when wet. 

 

One would hope all exterior boat paint (including Raddle) is impervious to water so I’m not sure that reasoning follows. 

 

More likely slippery when wet if gloss finish. 

 

  • Haha 1

Share this post


Link to post
Share on other sites
3 minutes ago, Mike the Boilerman said:

 

One would hope all exterior boat paint (including Raddle) is impervious to water so I’m not sure that reasoning follows. 

 

 

 

Agreed. Protective coatings are designed to be impervious to water. 

Flooring coatings are usually high build i.e. thicker than 'normal' paint and will be designed to be tough and hard. Obviously using a decking paint for steel would be better but if you have the garage paint spare you may get away with it but as above:

- if water pools on your rear deck when it rains, like it does on a section of ours, then that would be a weak point

- concrete coatings are often designed to go straight onto the surface whereas a steel coating usually has a primer coat to get best adhesion. If you get rid of any rust, the garage paint should adhere reasonably well.

- UV stabilization is a big issue. I would give Johnsons a ring and see if it is ok for outdoors(I doubt it).....and don't use red as that will not be as color fast as outdoor red coatings.

Share this post


Link to post
Share on other sites

I used a garage floor paint on some vertical surfaces in our trad engine room last year, cos i was too tight do do the whole thing in jotamastic 87. So far, tis ok. 

Share this post


Link to post
Share on other sites
1 minute ago, Gra73 said:

Thanks Sea Dog, could you suggest one please?

I've used Andy Russell's Gunwale paint, but I can't attest to its grip or resistance to abrasion on a steerer's step (although it's fine on the gunwales!) as I have Dri-Dek grid tiles on top so there's no direct contact.  In warships we used a deck paint clled Camrex which was waterproof, hard wearing - and very grippy! There must be a less military equivalent available at a chandler's. I'd be inclined to ask our resident paint experts what they'd recommend for the application (rather than asking about garage floor paint to which they might not reply). Hope that helps.

Share this post


Link to post
Share on other sites
1 hour ago, rusty69 said:

I used a garage floor paint on some vertical surfaces in our trad engine room last year, cos i was too tight do do the whole thing in jotamastic 87. So far, tis ok. 

Was that to assist the spiders climbing the walls?

  • Haha 1

Share this post


Link to post
Share on other sites
2 hours ago, Mike the Boilerman said:

One would hope all exterior boat paint (including Raddle) is impervious to water...

You’d think so, wouldn’t you?

 

However a Leyland tech wrote “Unfortunately non of our floor paints are suitable to be used externally. They do not allow moisture to pass through and would potentially become very slippery if saturated by rainfall. Thanks

from the q&a here: https://www.screwfix.com/p/leyland-trade-heavy-duty-floor-paint-slate-5ltr/49596

Share this post


Link to post
Share on other sites
4 minutes ago, WotEver said:

You’d think so, wouldn’t you?

 

However a Leyland tech wrote “Unfortunately non of our floor paints are suitable to be used externally. They do not allow moisture to pass through and would potentially become very slippery if saturated by rainfall. Thanks

from the q&a here: https://www.screwfix.com/p/leyland-trade-heavy-duty-floor-paint-slate-5ltr/49596

Wow. What a lot of numpties!

You cannot protect the steel (or concrete) if it lets water through!!

The best floor coatings I have seen have been modified 2 pack epoxies for use on off-shore platforms. Top of the list for performace criteria were adhesion, resistance to water transmission and toughness. You then build in the antislip without affecting the other properties.

Share this post


Link to post
Share on other sites
4 hours ago, Gra73 said:

Thanks Sea Dog, could you suggest one please?

I'm not Sea Dog, but i always recommend international interdeck. It's very easy to apply. 

Share this post


Link to post
Share on other sites
Just now, blackrose said:

I'm not Sea Dog, but i always recommend international interdeck. It's very easy to apply. 

Nah,  folk use that on their garage floors.

  • Haha 1

Share this post


Link to post
Share on other sites

Surprised nobody has mentioned that steel expands quite a lot more than concrete, and whatever paint is stuck to it, that coating has to expand as well. If it doesn't, it peels off. This, it seems to me, might be another reason why the formulations of floor paint and deck paint are different? I know nothing about paint chemistry but I'm with Seadog (post 6):

7 hours ago, Sea Dog said:

use the right paint for the right job

 

 

 

Edited by Machpoint005
punctuation

Share this post


Link to post
Share on other sites

Many thanks for all the valid contributions, I have bought the correct paint for the purpose as per the sensible comments received, suffice to say the topic has fulfilled it’s use.

Regards

Gra

Share this post


Link to post
Share on other sites

Yes, Leyland confirmed that their floor paint isn't suitable. I used an International non slip paint on the back deck a few years ago. Hopeless. It flaked off the Masons paint that was under it, and anything applied on top flaked off too. Had to remove it completely to redo the deck.

Share this post


Link to post
Share on other sites
1 hour ago, Onewheeler said:

Yes, Leyland confirmed that their floor paint isn't suitable. I used an International non slip paint on the back deck a few years ago. Hopeless. It flaked off the Masons paint that was under it, and anything applied on top flaked off too. Had to remove it completely to redo the deck.

Sounds like a 6 Ps issue to me.  ;)

 

Share this post


Link to post
Share on other sites

I used floor paint on a boat roof some years ago. 

 

It didn't last long - basically it's just not the right stuff for the job as alluded to above. 

Share this post


Link to post
Share on other sites

I painted my entire boat in Johnstone metal paints with excellent results couldnt be happier with their paints, just did another boats engine bay with their zinc phosphate primer and a few top coats of grey metal paint and it looks great 

Rick

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.