From the reviews it sounds like you should not use these on chalk board that have been painted w/ chalk
53674
That's what I've experienced. The force required to remove the marks completely usually damages the paint
1089757
I don't know whether they would work. I suspect they would, but these are meant for fine art. You can probably find much cheaper pastel colored chalks in a store that sells crayons and other art materials for kids. Wal-Mart or Target for example.
2199032
I have to say no. I painted a regular wall with chalk paint, let it cure for a few days and then used the SuperChalks to design a holiday theme. I just tried to wipe it off and I'm not having much luck. I might try the board cleaner or I just might have to repaint and use regular chalk. Love the Superchalks but perhaps the feedback is correct, don't use on porous surfaces.
1966161
They work just fine. As with anything used on chalkboard paint, it comes off best when you wipe it with a damp cloth.
908378
This liquid chalk isn't for. Chalk boards..it's more to write on glasses. .to .make the writing look like chalk hope this helpd
945196
Hi, Thanks for your question. Many of our customers are using our markers on chalk paint with success, however we do not recommend doing so. The reason being is that chalk paint - and all painted surfaces - are porous. This means the surface has microscopic holes which will allow ink to seep into the pores. Once you try and wipe the ink off a chalk painted surface, you may find it leaves a faint mark. Generally this mark can be removed using Windex, an ammonia based cleaner, or a lot of people have had success with Mr. Clean Magic Erasers, which are designed for removing marks off walls without removing paintwork. Given the variability of different surfaces and different brands of chalk paint, we would not recommend using our product on such a surface in case you experience issues with its removal. Other porous surfaces which should be avoided for the same reason include wood, concrete, & tiles. Also if using on a chalkboard, please check to ensure it is a solid slated chalkboard. What you will find is that if the chalkboard has a soft wood backing (often pine or similar), then it is most likely painted with chalk paint which may cause the above issues. Manufacturers of chalk boards often do this in order to save cost, and as you will appreciate whilst we guarantee the performance of our markers, we cannot guarantee all chalkboard surfaces are safe given there are so many different brands and types. We trust this is of assistance. Regards, Paul Davidson Chalk This Way
1305022
They are very bright and very liquidy markers so if the material you are using is any at all porous, they're going to be difficult to erase entirely. They wipe clean off glass of course. I would say they would wipe clean off chalkboard paper as well since it is 100% non porous.
926110
They are basically Sharpies with metallic particles in them...so anything another Sharpie can wrote on, they can also. Sharpies have some limitations, but I do not suspect that chalk boards are one of them...though it sort of defeats the purpose of having an erasable chalk board. If you want it to show very legibly, use the Sharpie Mean streaks instead...as they are like a grease pencil that hardens in time after application...but the mark they leave is not as fine as the metallic ones...so I use both. Most fine line white/metllic markers are not nearly as clear as the other Sharpie colors...just a fact of life. They are basically Sharpies with metallic particles in them...so anything another Sharpie can wrote on, they can also. Sharpies have some limitations, but I do not suspect that chalk boards are one of them...though it sort of defeats the purpose of having an erasable chalk board. If you want it to show very legibly, use the Sharpie Mean streaks instead...as they are like a grease pencil that hardens in time after application...but the mark they leave is not as fine as the metallic ones...so I use both. Most fine line white/metllic markers are not nearly as clear as the other Sharpie... » Read More They are basically Sharpies with metallic particles in them...so anything another Sharpie can wrote on, they can also. Sharpies have some limitations, but I do not suspect that chalk boards are one of them...though it sort of defeats the purpose of having an erasable chalk board. If you want it to show very legibly, use the Sharpie Mean streaks instead...as they are like a grease pencil that hardens in time after application...but the mark they leave is not as fine as the metallic ones...so I use both. Most fine line white/metllic markers are not nearly as clear as the other Sharpie colors...just a fact of life. « Show Less
1712106
Yes , I think you would be ok using this chalks anywhere , they wash off very easy and non toxic too
498231
I haven't had a problem with this sticking to anything. however, if it is a rough surface, you may not have an easy time writing on it with chalk. You'll have all kinds of bumpy lines.
1099459
yes i would think so..These are not actually chalk in that they don't just wipe off like chalk does. you cant just use your fingers etc to just rub it off. It only comes off when you use water on a towel or sponge or something to get it off. This being said i don't see why it couldn't be covered with a sealer unless the sealer is very liquidy then it might possibly loosen it up and it might run.
33010
I've only used them on glass, and it comes off easily even several weeks later. I would assume the chalkboard is porous.
862184
I think these would work very well on chalkboard decals. I would test first to be sure.
1306282
They're exactly like chalk. I uses them on a little chalk board and wiped off the chalk with either a damp cloth or a dry napkin-either works.
1597708
No, the only thing I've have found to work is using black vinyl. :( if anybody knows of a chalk paint that does work I would love to know.
2160036
I don't know because I don't have anything covered in chalkboard paint. Sorry.
581785
This is really not pertinent to me as this product was garbage! Chalk barely sticks to this plastic surface. I went with chalkboard paint & threw away the Board Dude!