As the name wood glue already reveals, it is used for gluing wood and is also known as a dispersion adhesive. The glue ensures that furniture is held together or even toys and other things. The wood glue can certainly be applied or filled. When working with the dispersion adhesive, it is important to make sure that the right wood glue is used for the correct application.
- Which types of wood glue are there
- Fields of application for wood repair or wood bonding
- Waterproof wood glue
- Processing of wood glue
1. Which types of wood glue are there?
It can be clearly said that there are quite a few varieties of wood glue (dispersion adhesives) on the market. But the most important types of glue are PU Holzeim and PVAC Holzeim. The PU glue is probably the most modern glue, it belongs to the one-component polyurethane glues and is also known as PUR glue. This dispersion adhesive is waterproof, so it belongs to the category wood glue D3 and wood glue D4 and can also stick other materials. If this glue is used, it will foam slightly. This ensures good gap filling. If you want to glue large surfaces, you must first spray on water, so that the complete curing takes place. Who uses PU glue, should know that this should be processed only with gloves. The PVAC glue is also known as white glue and is especially suitable for solid wood. It is discolouration free and offers the transparent glue joint. It belongs to the category wood glue D1, wood glue D2 and also wood glue D3 and has as an advantage a high gluing resistance to offer and the adhesive remainders can be removed easily.
2. Applications for wood repair or wood bonding
The PU glue is loved for its high strength indoors and outdoors. It lends itself to the bonding of different materials - even in combinations. With him you have glue that can easily pass and is also easily auspressbar. He pulls no strings and it is wood glue waterproof category D4. With this glue you can, for example, perform the surface bonding, the body gluing, the assembly bonding, the door panel filling and also the small-form glueing. The PVAC glue is mainly used for assembly gluing, as with slot, tenon, groove, spring or dowel. It can also be used for joint bonding, as well as for surface bonding.
3. Waterproof wood glue
There are different versions of the waterproof wood glue that we want to list here in order. Please keep this in mind, because wood glue waterproof is far from what you expect! It is not always the case that the wood glue is absolutely waterproof. Read for yourself:
Wood glue D1
This glue is about gluing for the interior, with a wood moisture of less than 15 percent.
Wood glue D2
Also, this wood glue is suitable for indoor use, even where there is a short-term or occasional water or condensation water exposure. The moisture content of wood may only reach a maximum of 18 percent here.
Wood glue D3
The wood glue D3 is again suitable for indoor use with short-term action of water, which occurs frequently. Even with a higher humidity it can be used. It is also suitable for outdoor use, but should not be exposed to direct weather.
Wood glue D4
This wood glue can be used inside and outside. Indoors, wherever there is a long or frequent exposure to draining water or condensation. Outside, it should only be used with adequate surface protection.
4. Processing of wood glue
Wood glue was actually developed to connect the wood surfaces. Whether for new furniture or for the wood repair. Because, of course, a wooden chair, a table or other can break and this requires the wood repair. Important for the gluing are the structure and the ingredients of the wood species. Just to give examples: Tropical wood is very difficult to glue. Wood with a plastic-coated surface is also difficult to glue, as well as wood with painted surfaces. The wood glue contains the adhesive particles and water, the particles are distributed in it. You do not have to worry about the water, this gets into the wood when you glue it, of course without damaging the wood. The processing of wood glue is always the same in the process. First you apply the glue and put the parts together. Now the pressing time takes place because you put the wood under pressure, whether by hand or with workpieces. Then there is the setting time, which takes the glue to stick properly. This time is different from glue to glue. However, before you can use the glue, you should first clean all surfaces that are to be glued. For this you have to remove grease and dust, so that the connection can also hold. You must also never apply the wood glue too thick! The surfaces to be glued should be completely covered with glue. The processing time for the PVAC glue should not be less than + 5 degrees. How long a glue needs for drying depends entirely on the room temperature, the humidity and also the moisture content of the wood. Not least of all from the glue application quantity.
Wood glue is very important and can be used for a variety of things. Each glue has its own advantages and should always be used only on materials that are free of dust and grease. All wood glues also need a certain drying time, whether you use PU glues or PVAC glues. The wood repair and the gluing of new furniture also needs a certain amount of time.