Someone said these are only for non-porous surfaces.Natural slate is porous.So these cannot be used to replace regular chalk?
203248
No, I don't think it will replace regular chalk. On the slate, it will probably never wipe off completely. The way I see it is the marker is more like concentrated chalk.
795572
I believe so. For these markers your going to need to do multiple layers to get a real saturated affect and once it's done chances are you're only going to be able to remove 90% of the chalk. It seems even soap and water doesn't get it all off. �
727087
I think you can. I haven't tried it but non-porous surfaces would be anything that's not painted and doesn't allow air and water to soak through. Glass shouldn't allow that from my understanding of the definition of a non-porous surface but I'm not an expert. For example, you would not be able to use dry-erase markers on chalkboards or coated wood. Glass should be okay but if you're concerned, I would suggest going to a Staples or something and buying one (1) dry-erase marker and testing a small portion of the glass board in a less noticeable area just to be sure the marking erases. I hope that helps, sorry I that I haven't tried it so I can't give a first hand experience.
1372532
These should be used on non-porous surfaces. With a wet-paper towel it comes off. However, this particular brand is not the best out there.
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
499656
Yes, I have used them on canvas. However, I painted the canvas with chalkboard paint first, then seasoned it as usual with regular chalk & used the liquid chalk on it.
1712106
Yes , I think you would be ok using this chalks anywhere , they wash off very easy and non toxic too
1862652
Densifiers are not designed for natural stone. They bond chemically to cement. I used these pads to polish a concrete counter top and they worked well. I imagine they would perform equally if not better on natural stone.
734131
It specifies non porous surfaces and does not list natural stone, so that means it could be damaging and cause etching on natural stones, which are porous. If you use something like 511 Porous Plus (I do my bathroom marble every 6 mos) it may offer some protection, but I'd test in an inconspicuous place first.
782290
Hi, thank you for your question. While we have several customers who have successfully used our markers on chalk painted surfaces, we do not recommend it. Painted surfaces are typically porous, i.e., the surface has small pores allowing liquid to be absorbed or pass through. This makes it difficult to remove ink from the surface once applied. If you believe the surface on which the chalk paint was been applied is non-porous, please test a small inconspicuous area first to ensure you can remove the ink. Surfaces that are typically porous include wood, plaster, cement, tiles, cork and brick. Our Liquid Chalk erases easily with water on a non-porous surface, i.e metal, glass, slated chalkboards. I hope we have sufficiently answered your question. If you have any further queries, please don't hesitate to contact us, we are here to help. Lilly Morrison - Inspired By Craft
2113546
Yes it is non porous, I would assume you could use liquid chalk I got it for my 4 year old grand daughter so I use the dust type of chalk but it seems like this doesn't leave any dust from the chalk don't know if that is because it is non-porous or they just make better chalk.
31239
You can remove them whit a little work , and no residue ,just dont use chalk if they are going in cups because the hands erase what ever you write on them
915310
I randomly got an email from Amazon to respond even though I see people have already responded, well anyway I'll echo the first two responses. They are sold individually, however still worth they money. They are MUCH better quality than the typical unsupported (no middle to the mold) chalks sold at auto parts and big box stores.
123028
Hi, thanks for your question. We would not recommend you use Chalk This Way markers on fabric, as this is a porous substance by nature. Chalk Markers are best used on hard, non porous surfaces. Whilst the ink is water based, you may find it stains your fabric and for this reason we would not recommend for this purpose. Regards, Paul Davidson Chalk This Way
1956017
yes, but not sure you are aware that once liquid is inside the glass, the chalk on the outside disappears. i returned them once i discovered that..
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.
1870367
My white writes fine on our chalkboard.Use Dawn Power Dissolver (it's for gunked up pans and such). Works like a charm! I just did my chalk board with it and it's beautiful and easy to write on now! You should be able to get it at any grocery store or Wal-mart.