Weldbond Wash And Glass Tips For Mosaics

A Weldbond wash can help stop grout bleed on a mosaic glass on glass piece. **IMPORTANT** If you have used Weldbond as your initial adhesive to adhere the tess the Weldbond Wash can reactivate that adhesive and it may take considerable time to dry again but the grouting can also reactivate that adhesive and will take considerable time to dry as well. To help speed up drying time keep your piece at room temperature. Also depending on your initial adhesive do a small test first to ensure the Weldbond wash doesn't react with it.
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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.
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[@davidhill1220]

Wow thank you ! So glad I subscribed Your packed with such important information 👍👌 Patricia

[@TreasuryRoad]

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

[@rosalieknox6495]

Thank you for this tip. I really enjoy watching your videos and have learnt so many different techniques and ideas about using such a variety of materials like this glass on glass.

[@TreasuryRoad]

My pleasure and thankyou for watching. :)

[@davidhill1220]

Thank you! Your tips are so clear and helpful! Patricia

[@TreasuryRoad]

Thankyou so much Patricia and appreciate your support as well. :)

[@ruthadams1108]

Really interesting. Thank you.

[@TreasuryRoad]

My pleasure. :)

[@susancalderbank7603]

Thanks Peter. Bondcrete dries clear, so here's hoping.

[@TreasuryRoad]

It also needs to be water soluble so it comes off the surface cleanly. :)

[@mozhdehnouripayam9470]

Thanks very much Peter, I have started to watch all your videos again which I already watched 1 year ago. I'm still a newbie and made couple of mosaics so far. I really want to be professional in Mosaics. Thanks for sharing your knowledge and experience generously.

[@TreasuryRoad]

Thankyou so much Mozhdeh, l consider myself an apprentice as l am always learning new things, lm sure you will do well, just love what you do and don’t stop learning, like everything. 😊

[@mozhdehnouripayam9470]

@@TreasuryRoad thanks Peter, if you are apprentice then I'm not born yet, Lol. Is there any specific book or website you can recommend?

[@TreasuryRoad]

@@mozhdehnouripayam9470 LOL Thankyou, I think the best 3 ways of learning is through taking classes that suit what you want to learn for instance Andamento, Design, etc from a professional mosaic artist that are perhaps very well known in the specific areas. Facebook has many great artists on there that give a lot of information and also from Work in progress photos that people supplied, study these and also their finished photos they contain a lot of good information that can be generally overlooked. :)

[@deeseligman4884]

After you’re done with the wash, and it’s set/dry, do you clean the wash film (that is on the top of the glass) off before grouting or will it come off when you clean after grouting? Thanks for the videos, appreciate them immensely!

[@TreasuryRoad]

Thanks very much, you can leave it and it comes off when you are grouting and cleaning the piece. I grouted that piece the next day as the adhesive had dried, turned out great. I cant see why you cant clean the bulk of the surface before grouting as well if you want to do that, just dont get water into the grout lines as it will reactivate the Weldbond Wash. :)

[@arlenebain5678]

Hey Peter! Just watched this video for about the 6th time! Lol I usually get something new from your videos every time I watch. I’ve just finished my first GOG project to grout. I tried to be very careful gluing the pieces (used MAC glue), but want to do a Weldbond wash just in case since it’s for someone other than myself. How soon after gluing can I do the wash? Thank you so much for sharing your expertise with us! 😊

[@TreasuryRoad]

Thankyou so much Arlene, appreciate that. I cant answer specifically about your project as its dependent on the environment your piece is in. The Mac glue needs to be totally clear and then I would leave it for a few days to a week after that, it could be done sooner but I prefer the extra time. :)

[@arlenebain5678]

@@TreasuryRoad thanks so much! That totally helps! I appreciate it very much!

[@mangomosaics]

Love this Top Tip buddy ! Would it also work using wood adhesive? But I do have a batch of MAC glue for my GoG door 😉

[@TreasuryRoad]

Hiya Caroline, my pleasure. I think it will work with any water soluble PVA, do a test to make sure first. Mac is awesome just remember it needs to be at room temperature before using so you dont get crystallization happening compromising the bond. :)

[@maggiecarey2695]

Thanks again, Peter for your expertise. A question: Do I need to clean the Weldbond out of the grout spaces? I can see there is a lot of white in between the tesserae. Will that prevent the grout from doing it's job? Will the Weldbond be white on the other side of the grout, or will it dry thoroughly after the grouting?

[@TreasuryRoad]

Thanks so much Maggie. When you do the Weldbond Wash you arent filling the grout lines up with Weldbond, you are only putting in a little bit in the grout lines it will find the areas where you may have missed with the adhesive. The Weldbond Wash should only be just in the very bottom of the grout lines if the adhesive is filled to the top or even half way thats too much and I would soak it up out of the grout lines if thats the case. Make sure its dry before grouting, it will go white again but will dry, how quick it will dry that will depend on how much adhesive is missing from adhering the tess down. That piece that I made, I applied the Weldbond wash, it was dry the next day and I grouted 2 days later it went a little white again and then it was completely clear 2 days after that. I always keep everything at room temperature it helps with the drying. If you have used Weldond as your initial adhesive to adhere the tess down the Weldbond Wash may reactivate that adhesive and you will need to wait for it to dry again before grouting, that can take some time to dry but the grouting can also reactivate that adhesive again as Weldbond is moisture sensitive. :)

[@brendagable5941]

Hi Peter! I love you videos...I find myself referring to them all the time! I have just done an outside piece on MDF and used thinset as my adhesive. I'm concerned I might not have fully covered the tess with thinset in some cases. As it is on MDF, should I still consider a weldbond wash? Thanks in advance!

[@TreasuryRoad]

Hi Brenda, Thankyou so much. I can’t comment on you job specifically but what l can say is don’t use any wood outside as it interacts with the environment that’s it’s in no matter how well it’s sealed, using wood outside in a mosaic will not give it longevity. The only time that a Weldbond wash is used is really in a glass on glass piece so as the grout doesn’t seep under the semi transparent glass pieces and be seen. Even then it’s not necessary if the glass tess is adhered correctly. 😊

[@nygrl6102]

I used weldbond once for the adhesive on gog. It took months to dry! Maybe I slathered it on too thick, but it made me hate weldbond!! I use clear silicone as adhesive now.

[@TreasuryRoad]

A lot depends on the environment that its in but Weldbond is notorious for slow drying when used in a GOG. Silicone contains solvents and it continues to give off solvents while curing which isn't good for your health long term. You are better off using Mac Glue and avoid using large pieces of glass to adhere down because that will slow down the curing process as well.

[@wildwoman8494]

Thank you great tips. Can you use a 50/50 mix of PVA glue and water as the wash over the mosaic? Thanks. Blessed be.

[@TreasuryRoad]

Thankyou, my pleasure. I would think that would be fine as long as its water soluble, always do a little sample first to make sure. :)

[@wildwoman8494]

@@TreasuryRoad Thanks.

[@susancalderbank7603]

Hi Peter, thanks for the video. Can I use bondcrete instead of Wellbond please?

[@TreasuryRoad]

Hi Susan, thankyou, I cannot tell you that because I have only used Weldbond. You could create a Facebook post in one of the mosaic groups such as Mosaics Australia Wide and someone in there may be able to offer advice on that product. Thanks for watching and appreciate the comment. :)

[@stephaniebenson5816]

Hi, do you use muti prep adhesive only on glass or for ceramics as well. Many thanks

[@TreasuryRoad]

Hi Stephanie, you can use Prep MultiUse adhesive on many different substrates not just GOG. Just do a test sample before using it if you are not sure. :)

[@originalart888]

I used Lexel (not very viscose) to glue TG to painted Wedi board. I am concerned about grout bleeding so I want to do a WB wash like you are showing. Wedi board is somewhat textured, plus the acrylic paint is somewhat textured. Would the WB be able to seal the tesserae underneath before I start grouting? Thank you for this video!

[@TreasuryRoad]

A weldbond wash is really suitable to glass on glass, anything with a texture just exacerbates the situation further especially when its Wedi board and acrylic paint. The best way is to adhere your pieces down correctly to avoid the need for a Weldbond wash which is another step and is not 100% successful all the time. Thankyou for watching and for your comment. :)

[@originalart888]

@@TreasuryRoad Thank you, perhaps I will continue with Mac glue which is more fluid and spread easier under the pieces!

[@cindelee]

Peter, after the wellbond wash is dry, do i use wet cloth to wipe off the wellbond on the surface, or do i grout and then wipe off please?

[@TreasuryRoad]

Hi Cinde, generally the grout will take it all off or most of it as its water soluble. :)

[@cindelee]

@@TreasuryRoad thanks Peter :)

[@KMF3]

Have you ever tried using a welbond or decoupage or any other type of glue wash wash and not gluing the pieces down the piece is down? It actually does work eliminate the need to glue anything down. Just pour it on.

[@TreasuryRoad]

I have no doubt it would work in some instances however it would be quite limiting. You would need to be careful as your pieces can move and your grout lines would fill up with glue so no grouting, some may see that as a bonus, also for complex mosaics it would be a nightmare working that way. :)

[@KMF3]

@@TreasuryRoad once it dries nothing will move at all. Makes the whole process much easier. I'm not sure what it would not work with.

[@TreasuryRoad]

@@KMF3 That is correct once it dries, however if someone is wanting to grout to enhance the mosaic this wouldn't be an option. If its a mosaic that is quite complex you couldn't risk the pieces moving around while you're working on it especially if the pieces are a neat fit. If you were to drop something on it like another piece of tess then the others pieces would move which would slow things down and would be quite frustrating placing it all back together manually. Also your tess would be covered in glue which I think would take away from the look of the mosaic piece. An outdoor mosaic where glue is laid down to a depth of 3mm assuming you are using stained glass may have an issue yellowing. With a glass on glass piece you would need to get out any air bubbles and ensure the glue covers evenly across the bottom of each tessera so you don't see glue marks. No doubt I think there is a possibility in using this technique however I think it will depend on the project and the look that people are after. :)

[@KMF3]

@@TreasuryRoad I've used it with mod podge 50/50 water. It dries completely clear and flat. You can grout after it dries and it doesn't move the pieces around if you are careful to pour it slowly. You place all the glass down first then pour the watered down glue over it. It looks like there is nothing on it.

[@j.c.7555]

What about the steel beading some people use? Do you do the same process or is it even necessary? Thank you! Love your videos!

[@TreasuryRoad]

Thankyou very much. When you say steel beading do you mean ball chain and what did you want to know?

[@j.c.7555]

@@TreasuryRoad yes ball chain. I would like to know if you should use the weldbond wash on the ball chain and then grout? Thanks!

[@TreasuryRoad]

@@j.c.7555 No need just use a good quality stainless steel ball chain, a Weldbond wash is really only used for glass on glass to help stop the grout from getting in under the semi transparent glass pieces but if the glass is completely flat and correctly stuck down there's no need to do a Weldbond wash on that either. If you're in Australia Merlin Mosaica has very good quality ball chain in a large range of sizes and finishes. :)

[@j.c.7555]

@@TreasuryRoad thank you so much for clarifying!

[@bevturquoise4651]

So, for clarification, I would do a Weldbond wash on a GOG specifically to get the Weldbond into the grout lines (but not too much) to avoid grout bleed. Right?

[@TreasuryRoad]

Yes the Weldbond gets under the glass if you haven't adhered the glass tess correctly stopping the grout bleeding underneath it. However you can avoid doing a Weldbond wash by just adhering the glass pieces correctly. :)

[@bevturquoise4651]

@@TreasuryRoad BTW, I recently had grout bleed and it was due to an uneven substrate which I had made. (just more information)

[@TreasuryRoad]

@@bevturquoise4651 Yes you definitely need to use totally flat glass on the side you are adhering down in a lot of cases a Weldbond wash wont help. :)

[@christihill2177]

Peter, if yoyr glass does have some texture on the adhered side, would a weldbond wash solve the grout bleed problem?

[@TreasuryRoad]

It would depend on how textured the glass is. To avoid that problem avoid using textured glass with the texture side down. If you used an adhesive with some body to it when you adhered the glass down, that in itself would help. 😊

[@summerholmes4725]

Hi Peter! Thanks for your videos. I love them! I have a question for you and I’m going to ask you.. right now. 😃😃 can I do a wash with mod podge? I’m getting ready to make my first glass on glass project and some of my glass is textured. But I’m on a self-imposed shopping ban and I’m trying to only use supplies I already have in the house. I don’t have weld one but I do have mod podge. And it seems to me like it should work. Or polyurethane? I have some of that.

[@TreasuryRoad]

Hi Summer, LOL I can understand a shopping ban, art can just get out of control. I haven't used Mod Podge so I have no idea, it would definitely need to be water soluble for it to have a chance to work because if it isn't then cleaning up is going to be very difficult if at all. You can always try it on a small sample piece to see if it works. If you adhere the glass down correctly you wouldn't need to do a Weldbond wash at all. :)

[@summerholmes4725]

@@TreasuryRoad Thank you so much for responding! The problem is that some of the glass I’m using doesn’t lie completely flat. So, I’m thinking I would need to do something to avoid grout bleed. Mod Podge is water soluble so I’m going to try it and I’ll let you know how it works out.

[@summerholmes4725]

@@TreasuryRoad Also, do I use sanded grout for a glass on glass mosaic like I do with my regular mosaics?

[@TreasuryRoad]

@@summerholmes4725 Thankyou. When using glass that's not totally flat there is always a danger of grout bleed, you can get away generally with a very slight undulation in the glass almost non noticeable however anymore and a Weldbond wash may not do its job. If you proceed let me know how you go. :)

[@TreasuryRoad]

@@summerholmes4725 Its a personal choice but I use sanded grout for everything including GOG as its more durable but some people use unsanded grout and love it. :)

[@crystalzevon8929]

Hi, I'm just starting to try GOG after mosaicing with ceramic and glass for some years. I'm wanting to do a window without grout and has spaces between the odd shaped pieces of glass. Do you have a video that addresses this? I haven't been able to find one.

[@TreasuryRoad]

Hi Crystal. I don’t have a video on that, most people do actually grout their GOG pieces. I have created a GOG that l didn’t grout in one area and that worked really well but the tessera was very close together. If you don’t want to grout the piece you don’t have to but l would want the Tess close together to make it more pleasing to the eye and to stop the dust from getting into the grout lines. You may also was to consider Litokol translucent grout, have a look at the video l made on it and see if it’s something that suits you, it’s under the playlist tab named translucent grout. l have made a couple of other videos using it as well that may help you decide. Thankyou for commenting and watching. 😊

[@crystalzevon8929]

@@TreasuryRoad Thank you so much. I actually have the translucent grout on order (thanks to your video). This piece is just a small experiment and some of the pieces are maybe 1/8in apart, maybe a bit more. Your comment about dust is making me rethink this. Again, thank yiu!

[@TreasuryRoad]

@@crystalzevon8929 Thanks so much Crystal and my pleasure, I hope you enjoy using it as much as I do. :)

[@gizelegionet7771]

I can’t find the finish glazing ball. I only see up to the 6 section. Did you ever finish it.?

[@TreasuryRoad]

No the large outdoor gazing ball isn't finished, I am posting updates when I have something new to show. Number 6 is the latest update that I released last week. If you are subscribed to the channel you will receive notifications when there is a new video and update released. :)

[@paulsmary2615]

What was the name of that adhesive GOG you brought in Australia ?

[@TreasuryRoad]

Prep MultiUse Adhesive. Its not sold through Bunnings. Have a look at my video on Prep and it will tell you where you can buy it from. :)

[@paulsmary2615]

@@TreasuryRoad ok. Thank you so much. By the way, i enjoy watching all your videos.

[@TreasuryRoad]

@@paulsmary2615 Thanks heaps. :)

[@lizstroud6531]

Peter, I know you did this video 2 years ago, but I see that you did respond to someone 3 months ago, so I hope you can see this one. I have done a glass-on mirror. It's my 4th one and I use Liquid Nails (over Jennifer Kuhns, glass on glass online course) I've been very happy with most of it, but on one of them, I got 2 pieces of very see-through yellow glass, and had grout bleed. In this project, I have very transparent gold glass and I have already grouted part of it (the sun and a sunflower in yellow grout, but I want to grout the rest with black grout. So my mistake is I didn't do the Welbond wash before I grouted the two areas. When that grout dries completely, do you think it is possible to still Welbond Wash what I haven't grouted yet? I hope this is something you might know about. I appreciate your opinion. Thank you.

[@TreasuryRoad]

That's quite an interesting question and one that I cant really answer. I would suggest doing a test sample where you have grouted part of it and then see how you go doing a Weldbond wash once the grout is cured on the other area. Its always best to adhere the glass correctly rather than rely on doing the wash because its another step that may not work all the time. Thanks for commenting. :)

[@lizstroud6531]

@@TreasuryRoadThank you for getting back to me. With all the glass on mirrors that I've done to have just 2 pieces of glass have the bleed, I think I've been pretty good with sticking the glass on. Some of the pieces are so small and I think I've covered the whole piece and I've missed a spot. Have to keep slowing down. lol🙂. I so appreciate your videos.

[@bevturquoise4651]

What I don't understand is ....if I do a weldbond wash on a piece of wood or MDF board, how is that protecting the wood from moisture if moisture is what will reconstitute Weldbond? Thanks Peter. BTW, I am also BevKat Miao on Fb.

[@TreasuryRoad]

HI Bev. Many use Weldbond as a sealant but never for outside especially on wood. When you dilute the Weldbond it penetrates into the wood where it will stay, if the piece is inside its not in contact with moisture unless its in a hot house and for homes to get that much moisture in there would be a greater health concern. There are better penetrating sealers around and waterproofing membranes as well its just Welbond has been used for years as a sealant because it was convenient and very accessible, if I were doing an outdoor piece it would not be my first choice. :)

[@bevturquoise4651]

@@TreasuryRoad The thing is.....I found this wooden dolphin that would only go outside. What is the best sealant for this dolphin.? (BTW, I hate Weldbond, LOL).

[@TreasuryRoad]

@@bevturquoise4651 Im not a Wedbond fan either. Anything wood outside is always a risk for longevity, you need to weigh up if its worth it or not. You will need to research on the sealant as each country is different and what adhesive you use along with the environment will also need to be taken into account. A few phone calls to companies as well or reading the manufactures technical data sheets will be needed. I cannot say this or that is a particular sealant to use as I dont use any wood outside. :)