Wood glue is a strong adhesive that every woodworker has, use to hold wood pieces together. It is pretty much important to know the different types of wood glue with their different applications for better use. When I was a beginner doing different woodworking projects after the painting was done, I was always wondered Does Wood Glue Work on Painted Wood?
Here is what I know from looking into it:
Yes, wood glue work on painted wood. But applying glue on top of the painted surface probably doesn’t give the strong joint you want. To achieve a strong joint between surfaces, glue needs to be penetrated the wood fibers, which doesn’t happen gluing painted wood.
But that’s just a quick snapshot of the question. Wood gluing is a wide field that develops continuously. There are certain occasions we look for methods to bond fully cured painted surfaces with generic wood glue. The most raised question is will glue adhere well to the primer/paint?
So, in this article, we’ll explore a little deeper and make sure we answer all the questions regarding How does wood glue works on painted wood? What glue works on painted wood, Does wood glue stick to primer, and many more.
Let’s get going.
Can You Wood Glue Over Paint?
Most of the wood glues are designed to bond bear woods. If your wooden pieces are painted with oil-based paint, you need something different.
Because for oil-painted wooden surfaces, wood glue does not penetrate through wooden fibers to make a strong joint between them. Painting blocks the pores of the wooden surface. This is why wood glue cannot penetrate the wood.
According to my experience, it is perfect to sand, scape, and cut off the paint before gluing the painted surface for a strong joint. If you wish to apply wood glue to the painted surface, sorry to say the joint will not be as strong as the paint. Also, the paint to glue adhere is so much weaker than the wood to wood glue joint.
If you want to attach two painted wooden surfaces without sanding, I highly recommend using Two-part epoxy or Polyurethane glue which will stick well with the painted surface and build up a stronger joint than in wood glue.
But even if you use epoxy, if the paint begins to fall with time, the wood pieces will come apart with it.
If the surface is painted with oil-based paint, the only permanent solution is to strip the paint by sanding and join them with wood glue. Otherwise screws also an easier solution.
Old desk on the side of the road + screwdriver, wood glue, paint = Cutie new desk. I love her. 😍😍 pic.twitter.com/BhG7adbGSK— Angie Whitfield (@angie128) July 7, 2018
Wood Glue Over Water Based Paint
If your painted surfaces are painted with water-based paints like,
- Acrylic paint
- Latex paint
Good for you, because wood glue perfectly works on water-based painted wood. Especially when we look at water-based wood glue PVA (polyvinyl acetate) glues (“Yellow”), you can apply it over water-based paint like Acrylic paint or over latex paint.
The bonding agent in acrylic paint and latex paint is almost the same as the bonding agent of wood glue. This is why PVA could make a good joint with the painted surface. But it can mainly use for drywall. PVA is a wood glue that works on painted walls. the adhesion properties of these glues are high because of being more water-resistant.
But I have to say that nothing builds the perfect joint as bare wood with wood glue. Here the glue-paint joint is so much better in strength than glue with an oil-based paint joint.
What Glue works on Painted Wood?
I did some research to find out the different wood glues with their application on painted wooden surfaces.
|Type of Wood Glue||How to Use Over Painted Wood|
|PVA glue||Work on Water-based painted wood|
|Epoxy||Work on Oil-based painted wood|
|Polyurethane glue||Work on Oil-based painted wood|
|Hide glue||Work on Water-based painted wood (like PVA)|
|CA glue||Work on Oil-based painted wood|
Does Hot Glue Work on Painted Wood?
Yes, hot glue work on painted wood. The hot melted liquid-like gel will penetrate through painted wood and stick the wood pieces. Hot glue is made of thermoplastic polymers combined with wax.
I recommend you to use Surebonder #825 low melt high-performance hot glue type to use for painted wood.
Stained with tea and painted paper straws. I have to make a hatch on top and put it another cross beam. May use hot glue as nail gun will probably split wood. #SeaOfThieves #freelarrythelegend pic.twitter.com/pWitbLdKjT— The Brit Beard 🇬🇧 in 🇨🇦 (@robtinbc) March 23, 2019
Does Wood Glue Stick to Primer?
No, wood glue does not stick to primer well as bare wood. Especially if the primer is oil-based, it won’t let wood glue penetrate the wood to make a strong joint.
If you wish to apply wood glue on top of the primer, my advice is to let the primer dry and scratch it carefully using fine sandpaper.
Because for a good glue bond, the primer needs to be taken off. Otherwise, the joint can be creep over time. Try to gain the rough surface. Let it air dry for few minutes and apply the wood glue to it. Here we mostly use yellow glue (PVA glue) as wood glue.
If your primer is water-based, then you’re good to go with applying wood glue on top of the primer surface.
Will Construction Adhesive Stick to Painted Wood?
Yes, construction adhesive sticks to painted wood. Especially better than wood glue. You just have to apply construction adhesive on top of the painted surface and press down for about 30 seconds and disengage them. This will stick perfectly. Because of the thickness of construction adhesives, they’re able to build thicker bead than wood glue does. This will eventually develop solid strong contact between painted wood surfaces.
Construction adhesives are too thick, and they’ll never penetrate the wood like wood glue. As an example, if you don’t have any clamp, nail, or screws to attach two painted wood pieces or the pieces are so small to use, construction adhesives can do the job. They also work under moisture are present.
Ultimately, construction adhesives can work as an alternative option for occasions where we cannot use wood glues especially because of their water-resistance.
What Is the Strongest Wood Glue?
Polyvinyl Acetate glue (PVA glue) also known as “Yellow” is the strongest and most durable wood glue on the market. If your painted wood, with water-based paint, I highly recommend you use PVA glue because it is better than all other glue types.
Polyvinyl Acetate glue (PVA glue) is the second-best option you can go to attach painted wood surfaces without a single piece of sanding.
It can use not only for wooden surfaces but also for metal, foam, ceramic, concrete, and glass as well.
Polyvinyl Acetate glue (PVA glue) has great water resistance, non-toxic strong adhesive, and also great for all indoor and outdoor applications.
In my experience the best Polyvinyl Acetate glues available on the market are,
- Gorilla wood glue
- Titebond 2 wood glue
Both of them can do a great job and wood glue work on painted woodas well.
Wood glue is what holds all acoustic guitars together. And I sure did have to use a lot of glue on my guitar to fix all the cracks in it. Hopefully the Gorilla wood glue, that I decided to try out, is strong enough. pic.twitter.com/9ZHlb67f3l— David S Vingman (@DVingman) April 12, 2020
Does Gorilla Glue work on Painted Wood?
Of course, it is. As I discussed above, Gorilla glue is PVA glue with great adhesion. It is a water-based glue with water resistance. Most importantly it is transparent once it dries.
So, in my opinion, Gorilla Glue is a quality wood glue you can use for painted wood without any concern.
Did I Cover all you wanted to know about: Does Wood Glue Work on Painted Wood?
In this article, we took a look at how does wood glue work on painted wood, what types of wood glue work perfectly over painted wood, what is the strongest wood glue, how wood glue stick with primer and how construction adhesives take place for sticking to painted wood and many more!
At the end of the day, my advice as a long-time woodworker is, Whatever the wood you’re working on, always make sure to apply wood glue before the paint or primer.
Also, if you want to apply wood glue to painted wood, I highly suggest you do your best to take the paint away without just directly applying any type of wood glue. Because nothing builds strong joint as bare wood to wood glue joint.
Hope this article will help you to face such circumstances without any issue with proper guidance.