Adults and kids doing arts and crafts often get confused when they read PVA Glue as part of the materials they need in their artwork. Is it a special sort of glue that you can
get only from special stores? Do you need to climb mountains and rivers to acquire the stuff? What actually is it?
The answer is actually quite simple and not as mysterious as it may seem to be. PVA glue, which stands for polyvinyl acetate, is actually the white glue you’ve been using since you were in preschool. Yes, that glue, although another derivative of it exists, called yellow glue or carpenter’s glue. The differences between these, aside from the color, are slight. Yellow glue dries up a bit faster and has a higher resistance to moisture, but has a shorter shelf span compared to the white variant. Drying takes a bit of time depending on the amount of glue used and the materials being bonded. Putting it in a well-ventilated room will make it dry faster. Because it is water-based, it is not very resistant to moisture, and its adhesive effects will eventually wear off when constantly exposed to it. It is not advisable to store it in a cool place, because freezing breaks down its polymers and affects its sticking abilities.
PVA glue is more common than other adhesives for a reason. Aside from being less expensive, it actually offers lesser risks. It is not flammable, non-acidic, does not emit harmful fumes, and is only toxic when ingested. You don’t need special materials or equipment to work with it; you can use it with your bare hands! It is more heat-resistant than other adhesives. Furthermore, it dries clear, so you wouldn’t have any worries about eyesore caused by the glue after it cures. It is also very flexible for people working with porous materials like cloth, wood, and paper. While this type of glue is more commonly used in the classroom for handicrafts, it has many other uses, some of which are surprising.
PVA glue is used in bookbinding because of its high adhesiveness. It can also be used in leatherwork and woodwork. It works by intertwining the fibers of the wood with the chemical substances in the glue as the water in it evaporates. When mixed with a small amount of water, the glue also serves as a nice adhesive for mosaic projects and paper mache.
PVA glue also has uses that are less commonly known. When mixed with sawdust, it can be used to fill gaps. Its diluted form can be used for sealing. For example, when applied to timber, it provides a slight waterproofing quality to it. Sealing plaster with PVA also slows down its moisture absorption, allowing you to work with it longer before it dries out completely. When mixed with a cement mortar mix, it makes it adhere more to the surface that it is applied to. Another surprising function of PVA glue is that they can be used to protect cheese from fungi and humidity. You can order PVA glue online here.