When you are doing woodworking, you find you are always required to glue wood pieces together as well as screw or nail them. In most cases, you tend to see one glue in use for this, which is wood glue.
When you begin to spot other glues around, you may see they are the same color, and they have three letters that are the same as the bottle of your woodworking glue.
Now, you may be thinking, what is the difference between PVA wood glue, school glue, and even Elmer’s glue because they all look the same?
Here, you can learn all you need to know about white PVA glue, no matter where you see it in use.
What Does PVA Glue Stand For?
PVA Glue comes from a compound called Polyvinyl Acetate (PVA).
What is White Glue Made Of?
Polyvinyl Acetate glue is a water-based type of aliphatic resin. You can find it used in many uses, and most commonly, as you know, in your woodworking.
Many individuals don’t realize that PVA glue is suitable for use indoors and outdoors. Polyvinyl acetate is the common active ingredient used in all other similar adhesives.
Hence, this is why wood glues, carpenters glues, school glues, or any white glue all have the same texture and faint smell.
Luckily, PVA Glue happens to be a non-toxic substance, and this helps it to be a popular choice for woodworkers as the glue dries clear.
Types of PVA Glue
As you see, there are various types of this acetate glue. Because of this, you may find you quickly pick up the wrong one by mistake, as they all look the same.
Here are the primary type of glue variants you may see around.
Polyvinyl Acetate Wood
Polyvinyl Acetate Wood Glue is ideal for use in woodworking. You tend to find this is the yellow PVA glue because it dries clear and is a good water-resistant glue.
It absorbs quickly into the wood and delivers a strong bond once you clamp the pieces of wood together. One thing to note here is, many woodworkers opt for white PVA because the yellow is more expensive.
PVA – Polyvinyl Acetate
You see this acetate glue on store shelves all over the place. It is the most recommended type for sealing paper, boxes, or even used in binding books. Once dry, this white glue remains flexible and dries very quickly.
PVA Water Resistant Glue
One thing to not misunderstand is that this glue isn’t waterproof. It is water-resistant and can fend off moisture and the buildup of mold and mildew. This PVA water-resistant glue is perfect for outdoor use and can last against most harsh weather conditions.
Where to Use PVA Glue?
Here are some of the areas where you can use white PVA glue, yet this list is far from extensive.
- Joining wood together: PVA adhesives can be used on wood pieces of different sizes and joints to create a firm bond before screwing.
- Binding workbooks: If you want to bind books, the glue is useful. It is flexible and robust, which can securely without compromising the PH of the paper.
- Crafting and arts
- Wallpaper adhesives
You will find countless other options where PVA glue can be useful, such as sealing envelopes, or for the numerous other crafting pastimes, many individuals carry out.
PVA Glue Benefits
- PVA won’t yellow over time (white has a longer shelf life than the yellow)
- The glue remains flexible and won’t crack or break down
- These glues are non-toxic
- They dry clear
One thing to note is that if you use Elmer’s as a substitute, this will yellow and break down, so you will lose the bond you used to have.
Tips for Using PVA Glue
To get the best from your glue, you do need to make sure you give it the best opportunity to do its intended job correctly.
These pointers can help:
- Always make sure you use the glue on porous materials
- PVA will bond better when clamped, or placed under weight
- You don’t need to purchase the best PVA for a specific task. Glue for wood can work as well for paper or crafting
- Some of the PVA’s are not water-resistant glue; however, the yellow does offer more protection
How to Use PVA for Woodworking
PVA is a low cost, water-based, and non-toxic formula, so it is a great way to glue wood together. You will find this glue for wood is a stronger variant of regular PVA, yet designed for bigger jobs. It is possible to purchase a colored variety if you don’t want the clear.
- Squeeze an amount of glue on the surface of both wooden pieces you wish to glue together
- Remove spills or excess using a damp cloth
- You can quickly spread a thin coat of glue over each surface of the wood
- Position the pieces together; jiggle the pieces from side to side if possible to remove any air that is trapped.
- Use sufficient clamps to place around the part to hold it in place while the glue dries
- Leave the piece for 24-hours before removing your clamps
- Carefully sand dried excess glue
Downsides to PVA Glues
You can find a few downsides to using PVA glues, although there are not that many.
- It isn’t waterproof
- It takes a long time to bond
- You can paint across it, yet you can’t varnish
- PVA water-based polymers break down if in freezing conditions
The best PVA glue can be the perfect thing to help you with your woodworking; it is easy to use and won’t harm your pieces as long as you follow all the above.
Read more Woodworking Guides