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D3: High quality joinery, furniture making and veneering including flat panel lamination with plastic laminates.
D3 = Interior areas, with frequent short-term exposure to running or condensed water and/or heavy exposure to high humidity. Exterior areas not exposed to weatherD4 PU adhesives are often considered to be waterproof. You can use D4 PU adhesives in interior areas where there is frequent long term exposure to water or moisture. You can also use D4 PU adhesives in exterior areas exposed to weather, so long as you apply an adequate surface coating. In normal conditions, D4 PU adhesives have a seven-day shelf life with a required bond strength of less than 10 N/mm2. If you store it in cold water for four days, the required bond strength reduces to less than 4 N/mm2. This required bond strength can be maintained if placed in boiling water for six hours, then cold water for two. Suitable for interior and exterior use, once applied D4 Chipboard Flooring Glue produces a foaming action causing the adhesive to foam out of the joints creating a ridge that enhances the protection of the joint – this can be easily removed once the floor is complete leaving a rigid bond that helps prevent squeaky floor boards. One adhesive does all - our D4 Glue saves time and money for the installation of chipboard flooring. There are 4 main types of durability grading, running from D1 to D4. The differences between these are listed below:
For those interested in the classifications, the bond strength requirement for the different classes is listed below: Ideal for all general woodworking and joinery uses, assembly line work, RF HF cure systems, wood on wood laminating, furniture assembly and house hold DIY use.Litre Solvent Free External High Grade Industrial D4 Wood Adhesive Based on the latest hybrid resin technology.
These gradings are part of the European standard BS EN 204 governing the classification of wood glues for non-structural applications.
For a suitable exterior wood glue that holds its bond in all weathers, Gator Glue is suited to professional and domestic tasks, while our 502 All-Purpose Weatherproof Wood Adhesive provides an impact-resistant bond that is usually stronger than the wood itself. If you are new to using PU adhesives, you may be wondering why they have a D in their title. You might be asking just how a D4 PU adhesive is any different to a D3 or D2 adhesive? It might be easy to tell a Tytex 1 kg 30 Min Set PU Adhesive from a Tytex 1 kg D4 PVA Adhesive. However, the D grade stands for durability and is part of the European standard BS EN 204 which governs the classification of wood glues for non-structural applications, and it helps to show how resistant the adhesive is to water. There are four durability gradings specified, so let us look at D1 through D4 adhesives. Durability Classes: D1 Adhesives:
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