157026 80-400-4 H20 Masking Liquid, 1 Quart, Clear

This is a marvelous product. Eliminates the need for taping glass doors & windows when painting to keep paint off the glass. Peels off easily, (put enough on), any residual slides right off with a razor. Gives smooth edges where glass meets the frame because you cut along the edges before you pull off the film.

Product is easy to use and does what they claim. I had a framed mirror that I used this on. I wanted to change the color of the frame. The application was easy enough. Make sure if you accidently touch the edge of your painting surface with this product that you wipe it down really well before painting. It goes on white and dries clear. I just ran a straight edge razor around the edge of the masking liquid and pulled up and off.

Works great! I love this stuff. It’s so much faster than taping and there is no bleeding underneath like tape. Also I was able to get it to work on textured glass by using 2 coats. Well worth the cost, works on textured glass and extremely easy to use!

I was really scared to try it but this was awesome and made it really easy to paid our double does with 30 small panes of glass? I will say it’s not perfect but all in all it’s pretty great!

I'm using this product in conjunction with my cheap laser engraver and sand blaster. It works best on metal. I paint the liquid mask onto metal, then cut out a design from the mask with my laser engraver and then hit the part with my sandblaster and aluminum oxide blasting media. It does a nice job. I can get good looking results. The mask holds up long enough to get nice, even, frosted looking sand blasted designs. The mask doesn't hold up long enough to do deep relief blasting though. But that's asking alot. The mask then pulls off the surface easily. I know other people do the same thing with smooth, coated wood. I haven't experimented with wood or plastic much yet.

I put this on as thick as possible and when dry i had to use a razor to remove it. I only used it on one window, then went back to edging. I will throw the rest out.

I seldom write reviews, but I'm such a big fan of this product that I had to. I had to paint both sides of two doors and a clean paint job is very important to me. Each door had 10 glass panes, so I was looking at masking 40 panes of glass across both doors to get the straight lines that I wanted. That sounded beyond tedious with painters tape, so I went looking for alternatives and found this masking liquid. Applying the product was easy. After light sanding of the existing paint, I wiped it down and then applied 2 coats of the masking liquid around the edge of each pane using a cheap paint brush. I tried a single coat as a test, but found that it didn't remove as easily as I had hoped. The second coat of masking liquid completely resolved that. The masking remained on the windows for 2-3 weeks as I worked through primer and multiple coats of paint. When the project was completed, I set about removing the masking and couldn't be more pleased with the end result. The paint lines around the glass are completely straight and the masking removed easily from each pane in one piece. It did leave a slight residue on the glass, but that was removed easily with glass cleaner. In the end, this product saved time, provided great results and was significantly easier to apply than painters tape. Highly recommended!

FROM A PAINTING CONTRACTOR: I spent a WHOLE DAY testing this product in MULTIPLE scenarios on my project and learned a LOT. Here's my results... 1. Using only one coat with one coat of paint over the top... did not work well. Came off in smaller strips. 2. Using 1 coat with two coats of paint over the top... worked a little better but really not great. 3. Using 2 coats with one coat of paint over the top... worked about the same as #2 above, maybe slightly better. 3. Using two coats of this plus two coats of paint... worked pretty decent, but NOT awesome... most came off in 1-2 pieces but still had to scrape a little around the edges. 4. Using THREE coats of this plus two coats of paint... worked quite well... most came off in 1 piece. Also tested it on... 5. Old (early 1900's) glass - worked ok but definitely needed full 3 coats 6. Newer glass (from 1980's) - worked better. 7. Dirty glass - seemed to stick a little to hard water spots on glass but altogether worked pretty well. 8. Clean glass - seemed to help it come off a "little" easier. SUMMARRY... This product ONLY works well when you use 2-3 coats of it PLUS two or more coats of paint OVER it. It DOES NOT work well if you use less than this. IMPORTANT NOTES: 1. IT WILL STICK to old paint on glass making it not come off too easy on those areas. 2. DO NOT let this stuff touch your wood or surfaces you want to paint on ANY EXTERIOR painting. It WILL NOT BOND and your paint job WILL PEEL OFF MUCH FASTER - ESPECIALLY on exteriors - like the next winter. 3. I learned this product is worthwhile ONLY if you TAPE the perimeter of the glass, then paint the centers, or... if you don't care about the quality of your exterior paint job and are ok with it peeling off soon around the edges of the glass (then you don't need to tape the perimeter of the glass). 4. FOR PROFESSIONALS: If you are pretty quick at masking, it is NOT much faster than masking (if you want to avoid getting it on the edges much). If you are doing low quality work and don't care that it WILL NOT bond to the wood or old paint at all, and will flake off later, then you don't need to pre-tape. If that's the case, then YES... this is faster than masking, especially for new construction interior glass that is clean. BUT I ALSO TRIED THE OTHER PRODUCT (Jasco Liquid Masking), in ALL the same scenarios above... and it was HORRIBLE... took MANY hours to scrape it off a few panes of glass. NONE of the scenarios worked well. It practically bonded to the glass. Good luck.