Glass On Glass - Avoiding Grout Bleed And Other Tips In Mosaics

In this video I will share with you my tips to not only avoid grout bleed in a glass on glass mosaic but also other tips to make it easier to create a GOG piece. For links on products and videos click on "Show More"
ADHESIVES AND SUPPLIES AVAILABLE FROM THE FOLLOWNG RETAILERS
LIGHTBOXES
merlinmosaica.com.au
MAC GLUE
USA: macglue.com
PREP MULTIUSE ADHESIVE - Australia
merlinmosaica.com.au
ozmosaics.com.au
SOUDAL CRYSTAL CLEAR FIX ALL TUBE
AVOID purchasing the small squeeze tube, the adhesive is too difficult to get out.
merlinmosaica.com.au
Mitre10.com.au
bowens.com.au
Also sold in the USA under another name, please contact Soudal in the USA
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Disclaimer
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Videos produced by Treasury Road and all material provided within this website is for informational, educational, & entertainment purposes only. The video and all included information does in no way constitute the provision of professional advice.
Some of these projects, materials, and techniques may not be appropriate for all ages. Treasury Road does not guarantee or make any claims of the safety of the projects, techniques, or resources listed on this site and will not take responsibility of what you do with the information provided by this site. Users should seek appropriate independent professional advice prior to relying on, or entering into any commitment based on material published here, which material is purely published for reference purposes alone.
You agree that use of this information is at your own risk and Treasury Road cannot be held liable for any losses, liabilities, injuries or damages resulting from any or all claims.

[@kayebaron7188]

Such a wealth of information Peter! You are always so generous to share your preferred methods for mosaic novices & enthusiasts like myself. So many times I've embarked on a project and get disheartened half way through, when things aren't going right. Then I revisit your video and my problems are solved. Thank you. Every piece I have made, has been done with a different technique, tesserae & substrate to further my knowledge. All of them I learnt from you, including fixing my mistakes & finding my preferences. If I am interested in a new technique of mosaics, although excited I'm usually nervous until I go to Treasury Road Site. My new favourite journey is preparing for a happier retirement. Thanks to you! You are a great Aussie Ambassador for all genres of Mosaic Art..

[@TreasuryRoad]

Aww Thankyou so very much Kaye, that's very kind of you to say that and I am so glad the videos are helping you. It will be wonderful when you retire and have more time to do what you love. I consider myself an apprentice because I am continually learning and will continually do so like everyone. Thanks you once again and I look forward to seeing what you create. I am in a number of Mosaics groups especially Mosaics Australia Wide, join the group and post some pictures there if you would like. :)

[@sherrillgammon3366]

I k know this video is a year old but I just love your clarity in speaking and getting to the point without a lot of fluff conversation which actually makes me lose focus on the subject! I am just starting to do a few pieces of glass on glass after having done one at Christmas, which had some problems because I wasn’t quite sure what I was doing. It’s very hard to find the Mac glass glue here in the US but I will continue to look for it. I really appreciate your teaching skills.

[@TreasuryRoad]

Thankyou very much Sherrill appreciate that. MAC glue is currently out of production for the time being because one of the ingredients used in it is no longer being sourced. They are working on a new formula. In the meantime consider using an Australian product called Prep MultiUse adhesive, you can find it on EBay. Also Marvelous Mosaics in the USA has a similar product. Thankyou for watching and for your lovely comment. 😊

[@pmarlowe1638]

As always, your instruction and guidance are so thorough and informative! Best tutorial I’ve seen on this topic! Thank you!

[@TreasuryRoad]

Aww Thankyou so much, that's very kind of you. Im so glad you enjoyed the video, thankyou for watching. :)

[@CathyAust]

You are amazing!! Thank you for sharing your knowledge. I am just starting mosaics but have been doing fused glass and stained glass for some time. I have bins of scrap stained glass and have wanted to put them to good use for a long time but had no idea how to start. My biggest concern was seeing glue spots when a piece was hung in the window. I think I am now addicted to your videos. Thank you so much.

[@TreasuryRoad]

Thankyou so much Cathy. Mosaics and glass on glass are wonderful to do and it is a good way to use up all that awesome scrap glass. Your existing experience with glass will definitely help when creating a GOG. Appreciate your comment very much and thankyou for watching and subscribing. :)

[@elaineallen5069]

Thanks again for another phenomenal video. Sure wish you lived in the United States. Would love to take classes from you! At least we have your awesome videos! Thanks Peter!

[@TreasuryRoad]

Thankyou so much Elaine, appreciate that. If you are looking at GOG classes check out Kory Dollar at Marvelous Mosaic Fine Art and on FB in the USA. :)

[@elinarosenblum1882]

Dear Peter, thank you so much!! So detailed and thorough, and filmed so up-close and perfect that I can see what you are doing as if I were standing next to you :) You are wonderful!

[@TreasuryRoad]

Aww Thankyou so much Elina, appreciate that very much and thankyou for your support. :)

[@arlenebain5678]

Thanks for taking the time to share with us! Another wonderful video! ♥️😁

[@TreasuryRoad]

Thankyou very much Arlene, appreciate that. :)

[@lindaweiss7053]

Thank you again. I am learning so much from you. Linda

[@TreasuryRoad]

Thankyou so much Linda, appreciate that. :)

[@cindyakers-gilford9020]

Needed this video as a constant reminder to come back to when needed. Thx 😉

[@TreasuryRoad]

Thankyou very much Cindy and thankyou for watching. 😊

[@Mamaosa63]

This tutorial was excellent information. Thank you.

[@TreasuryRoad]

Thankyou very much Marston appreciate that and Thankyou for watching. 😊

[@mangomosaics]

Thank you for this very useful and well produced video, Pete! Another corker! My preference is Soudal Fixall Crystal Clear. My top tip with this glue is: always use a fresh can as it will haze once opened over time (old glue is still workable for adhering onto tessera but hazy old glue will show behind Glass Appliqué ) Make sure you butter the entire back of each tessera to avoid grout bleed Slide tessera into position so that it sucks into position. Stay fabulous Pete! 🧡🧡🧡

[@TreasuryRoad]

Thanks so much Caroline. Great tips but I haven't had the Soudal haze over on my GOG pieces and I have used it 6 months after opening. I do use the Save A Tube caps that really do keep it in very good condition and I haven't had any other reports on this happening to anyone else. I hope you're well and all is good. :)

[@sundaysunshine2925]

Thank you - always informative

[@TreasuryRoad]

Thankyou so much Sunday and for your support. :)

[@lynnpomeroy9336]

Thank you so much for your lesson.

[@TreasuryRoad]

Thankyou very much Lynn for watching. :)

[@slickbit13]

I’ve got almost an entire gal of Mac I haven’t used since I started using Prep! My favorite one is Prep because I has less issues with temperatures and it’s cheaper for me to order from Australia (including shipping) than to order Mac in the USA to be shipped to me in the US. The cost plus shipping for Mac is more expensive than Prep. I just feel more confident with Prep. My students do a lot of 3D GOG and Prep is what we’ve been using with much success.

[@TreasuryRoad]

Thankyou so much for the comment. Prep MultiUse adhesive is a great adhesive and is considerably cheaper than Mac. I find I enjoy using both however you are right Prep doesn't have the issues with the cold like Mac does. There are a number of people in the USA that purchase Prep from Australia and I think the list is growing. Thanks so much for watching. :)

[@slickbit13]

Lot of the people in the USA buying Prep are in my classes. Lol

[@michellelalonde4918]

another great and informative video! I learned a lot. Thanks Peter

[@TreasuryRoad]

Thankyou so much Michelle and thanks for watching. :)

[@summerholmes4725]

I use silicone glue by Bazic and I love it! Thanks for another wonderful video!

[@TreasuryRoad]

Thankyou very much for the suggestion Summer and thankyou for watching. :)

[@mysticalwonderland8479]

Great video, love MAC glue and it’s pretty much all I use now! I tried silicone a couple times and I’m just so messy with it. Also went back to a vase I had started and left for a few months and peel the Tess off very easily as I wanted to use for something else, and I thought well, that’s no good! Maybe it was the wrong kind of silicone. However, when I make a mistake with MAC that Tess won’t come off for anything lol. You’ve sold me on the light box as well, looks like a must have for GoG. Thanks so much for sharing your knowledge with us! X

[@TreasuryRoad]

Thankyou very much Mystical. Not all silicones are equal and yours may have been more of a sealant, but MAC is the far better choice for GOG so you made the right choice. Thankyou so much for watching. :)

[@petraschultz7292]

That was a great demo ! Thank you 😊

[@TreasuryRoad]

Thankyou very much Petra, appreciate that. :)

[@suntangram]

Thank you. Very helpful.

[@TreasuryRoad]

Thankyou so much and thanks for watching the video. :)

[@davidhill1220]

This was very helpful Thanks! Patricia

[@TreasuryRoad]

My pleasure Patricia and thankyou for watching. :)

[@jennylockhart2668]

Great tutorial!! Will definitely try your way. On my 1st piece I used an adhesive I found but as it doesn't have a fine tip I put a blob on the glass substrate and spread it with a small (artist) paint brush. Worked well...just hoping there's no grout bleed but I'm hoping to use something clear...if there is such a thing....in Canada. Trying to find the litikol epoxy grout here that you recommended. Looking forward to your pending video. It's an outdoor table so if you know of any other products I'm all ears. Is Mac glue suitable for outdoor pieces? I have so much to learn and your videos have become my go to. THANK YOU!

[@slickbit13]

Another great video! Thank you!

[@TreasuryRoad]

Thankyou so much Liz, appreciate that. :)

[@marleneoutlaw5132]

Thanks, this really helps. I realize I have been using too much glue. So, I have a problem with the MAC taking too long to dry. How can I speed up the process. Textured glass on glass.

[@TreasuryRoad]

I think you have answered your own question, less is best with MAC glue. MAC is one of the quickest drying adhesives, keep your pieces small and if you are using textured glass make sure it’s totally flat on the side you are adhering down. I also like to have everything including the room at room temperature before working. That includes, MAC, the glass and the substrate. Using a light box under your GOG will also give off a gentle warmth which helps with curing. Generally the MAC glue on my GOG is clear by end of day or well on the way. Thanks for watching and for the comment. 😊

[@MakenzieHallie]

So helpful. 🙏🖤

[@TreasuryRoad]

Thankyou so much, appreciate that and thankyou for watching. :)

[@AlisonBaker-z6h]

Have been away from my mosaicing for a while due to health concerns so am reviewing by watching your excellent videos! Thank you. Have you ever used Diamond Glaze on your gog? It has seemed to do as well as Mac for me.

[@TreasuryRoad]

Thankyou very much Alison appreciate that. I haven't used Diamond Glaze because it can turn yellow especially on a GOG. Here is a snippet form the manufacture. Q: Does Diamond Glaze™ yellow over time? A: When applied in a thick layer or exposed to prolonged sunlight, it may yellow. I would probably look at another adhesive because of the possibility of it yellowing. Welcome back to mosaics, thankyou for watching and for your comment, I hope everything is fine now with your health. :)

[@AlisonBaker-z6h]

Thank you,Peter. I hadnt noticed the yellowing, but I would always follow your advice. I can keep the diamond glaze for something else. Thanks for your well wishes. I am doing much better.@@TreasuryRoad

[@TreasuryRoad]

Thankyou, using the Diamond Glaze may be fine but I am only going by what the manufacture says. Im so pleased you are in better health. :)

[@cherylsmall4592]

Thanks Peter another fantastic informative video. I have not done a glass on glass as yet as I've only been Mosaicing for 15 months and not confident enough. Your video gives me a better understanding to avoid the dreaded grout bleed. May I ask where you purchased your light box?

[@TreasuryRoad]

Thankyou very much Cheryl, appreciate that. GOG is really great and you should be fine following my tips. The light that l used is a commercial one and was quite expensive so it’s a bit of an overkill for GOG. If you’re in Australia Merlin Mosaica sells light boxes, if you’re not then just Google them but it is a bit of a minefield out there. I will be producing a video on light boxes very soon to help choosing one. 😊

[@catherineday8051]

Hi Peter, I'm planning adhering small cut glass ware like dessert bowls and sauce dishes to a window pane and framing itt up inside another window pane, double glazed like effect, with added glass gems. I'm in a cold part of Victoria . Would Prep multi use be the better choice of adhesive?

[@TreasuryRoad]

Hi Catherine, I cant comment specifically about your job but generally speaking Prep is fine for GOG if the pieces are flat otherwise you would get grout bleed underneath them. Another alternative to look at is something like Soudal Fix All Crystal Clear which has more body to it, its similar to a silicon but doesn't have the solvents. You may also need to be careful of condensation within the window if its fully enclosed. :) Soudal is available online from Merlin Mosaica or from Mitre 10

[@trishapollard4374]

Great video, thank you! What would you say is the ideal size for a light box?

[@TreasuryRoad]

Thankyou so much, it really comes down to the size of the mosaics you are making. A small A4 size can be moved around under the glass substrate if you cant afford a larger one but I would say an A3 size would be comfortable without being to small or large. :)

[@sost8902]

Amazing! What tool did you use when you were cutting flat clear glass? Thanks!

[@TreasuryRoad]

Thankyou very much, I scored the glass first and then used a pair of blue plastic running pliers to break the glass. Thanks for watching and commenting. :)

[@jenniferramus8751]

Thanks for the video, I was going to try gog in the next week or so and this has been very informative.... Where did you get your light box, please ?

[@TreasuryRoad]

Thankyou so much Jennifer, I have had it for a number of years and cannot remember the company that I bought it from. It was a commercial one and cost around $800 so its a bit of an overkill for this but works so well. I am looking at producing a video on lightboxes because its a bit of a mine field out there. :)

[@mozhdehnouripayam9470]

Hi Peter, thanks for this video. When you are talking about cleaning of glass tess and substrate, do you mean cleaning with glass cleaner spray? Are talking about cleaning oil residue or stain or you mean even clean from dust?

[@TreasuryRoad]

Hi Mozhdeh. Im just generally talking about dirt, oily residue left on from a glass cutter, anything that could compromise the adhesion of the piece. :)

[@brendagable5941]

Great video once again Peter! I'm doing a glass on mirror project which will be hung on the wall in my bathroom. I plan to use silicone. Can I assume all of the same principles apply? I was planning on using a few fairly large pieces and am now concerned about the curing process. Thank you!

[@TreasuryRoad]

Thankyou very much Brenda, I cant specifically comment on your job as there are always variables I cannot see. However the principles of ensuring no air bubbles and the base of the tess is completely covered to avoid grout bleed still applies. I use a paint brush to apply to the substrate when using silicone type products on a GOG. I cant comment on the curing time as there are different silicones and not all are equal, I really only use smallish pieces. You may want to have a look at Sue Smith Glass, she has a KZbin channel and is also on FB, her glass on mirror is stunning and she gives a lot of tips. She also has a FB mosaic group called Mosaic Connections. :)

[@nieslpamela119]

21:04 does MAC glue come out of the bottle clear or white?

[@TreasuryRoad]

MAC Glue comes out white and cures clear. :)

[@jalvah]

Can I use mesh with thinset on glass on glass?

[@TreasuryRoad]

Why would you want to do that you would see the mesh on the reverse side and you wouldn't see through the semi transparent glass?

[@jalvah]

@@TreasuryRoad what would you recommend to stick stained glass on a small glass table top?

[@josielenwell4026]

I loved using the Mac - and I did clean the pieces but notice there is still a film on a number of pieces - any suggestions for further cleaning besides acetone? thank you

[@TreasuryRoad]

Yes I love Mac as well. There isn't an easy way to remove the residue. If you still have a film on top after wiping the tess over with water as you go using Mac, then you need to change the cloth. Using disposable baby wipes will solve this issue, dont allow the Mac to cure on top of the glass. Thanks for watching. :)

[@cyhomer]

Do you have any pictures of grout bleed?

[@TreasuryRoad]

No but if you Google Grout Bleed in a GOG it will probably show you. Also if you are in the Facebook Mosaics groups there will be photos there as well if you do a search within the groups. :)

[@chriswilbers1215]

If you have a long, narrow piece of glass, such as 3/8" wide by 3 1/2" long, is it better to apply the Mac Glue to the back of the glass rather than to the substrate?

[@TreasuryRoad]

Its personal preference I only apply Mac to the glass substrate rather than the individual piece. I find this is quicker and far less messy. I would only use small pieces of glass the larger you go the longer it will take for MAC to cure. :)

[@chriswilbers1215]

@@TreasuryRoad Thanks!

[@cindypage8673]

I am wanting to do some glass on glass for an outside project in the UK. Would this still be the best adhesive to use please?

[@TreasuryRoad]

I cant answer that Cindy because your environment over their is extremely harsh. I know Sue Smith uses silicone for her glass on mirror, she has been creating these for 20 years and she is based in the UK. Sue has a KZbin channel, Facebook page and group. I would be inclined to reach out the Sue and create a post in a couple of the Facebook Mosaic groups. This way you will be able to receive advice from others that are in the UK and doing outside GOG projects and may also be using Mac glue. I so much prefer Mac over silicone, I find it so much easier to use, however to the best of my knowledge Sue always uses silicone. :)

[@cindypage8673]

@@TreasuryRoad Thank you so much for the reply, I will check sue out x

[@pattyrdh1987]

where can Mac glue be purchased??? thanks

[@TreasuryRoad]

MAC Glue is no longer being made, the resin used in it is no longer being sourced so MAC are working on a new formula but no one knows when that will be released. You can use Prep MultiUse adhesive for GOG, its an Australian product but you can purchase it off Ebay or from Merlin Mosaica in Australia who ship internationally. If you are in the USA its quite cost effective to buy from Australia because of the $US being worth more. I consider MAC Glue to be the best for GOG but Prep is a good adhesive. Thanks for watching and appreciate the comment. :)

[@pattyrdh1987]

@@TreasuryRoad Do you like the Prep product as much as Mac? I want to do a long mosaic glass window.Thanks so much I will check with Merlin Mosaics. I was hoping to find an Amazon dealer

[@pattyrdh1987]

@@TreasuryRoad Could E600 be used successfully?

[@TreasuryRoad]

E6000 is not a good product to use for GOG, because of its curing it can cause cracking of the glass. Also its quite toxic and gives off harmful fumes that you would constantly be breathing in. Its okay for small projects like jewellery but definitely not for Glass On Glass. A number of people use GE Silicone 2? for GOG in the USA, I haven't and its not available here in Australia maybe worth checking out. Thanks for watching Patty. :)

[@TreasuryRoad]

Prep is a good adhesive but I still consider MAC to be the best for Glass On Glass. I also use it as a general adhesive as well, its clearer, dries quicker and is waterproof when FULLY cured. I have used MAC glue for over 10 years, it was designed by an artist and it is a lot thinner than other adhesives but that's a plus for GOG. :)

[@angellacanfora]

First I've ever heard the expression "grout bleed" and I've been a stained glass on glass mosaicist for 16 years! Huh.

[@TreasuryRoad]

Thats great you have never experienced it, its a pain for many, you must be adhering your pieces down correctly this stops the grout bleed. Thanks for watching and commenting. :)

[@angellacanfora]

@@TreasuryRoad Actually, I do get it, didn't know there was a term for it. It's just that it doesn't bother me. I like that it gives a rough hewn look to my art. It helps delineate it from traditional leaded stained glass. But that's just me! lol

[@TreasuryRoad]

@@angellacanfora That's a fair comment and I agree it just depends what a person likes in a mosaic. :)

[@sost8902]

Amazing! What tool did you use when you were cutting flat clear glass? Thanks! W

[@annewilliams8650]

Where do you buy Mac glue in Australia?

[@TreasuryRoad]

I have put the retailers in the information box of the video.

[@annewilliams8650]

@@TreasuryRoad According to Ozmosaic website they have sold out. It has been like this for at least 6 months. All other websites in USA have it as not available or available only to those in US.

[@TreasuryRoad]

@@annewilliams8650 lm not surprised, Mac USA cannot ship it when the weather is very cold, so this can cause supply issues. 😊

[@squaredarlings5820]

So helpful thank you very much!!😊

[@TreasuryRoad]

Thankyou so much, appreciate that. :)

[@mangomosaics]

Hi Pete, just to let you know that I've added a link to this video in the last three of my glass appliqué filmettes 😘

[@TreasuryRoad]

Hi Caroline, that's fine, thankyou for the support. :)

[@originalart888]

Hm, how did you get from a light box with an opaque surface to one that has some kind of grid on it? 11:20

[@TreasuryRoad]

The grid was always there, but when l zoomed in the camera picked up on the pattern in the light box. That grid is grooved and allows the led light to travel through allowing for even light distribution. 😊