Chemical-Technical Products
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Frequently asked Questions
Accurate information is key to high-quality execution, which is why we are here to answer your questions.
What do the labels D1, D2, D3, and D4 mean in woodworking adhesives?
The “D” rating and the accompanying number indicate the adhesive’s resistance to moisture. A higher number means better moisture resistance. An adhesive with a D1 rating is intended solely for indoor use, where no moisture is present and the temperature does not exceed 50 °C. On the other hand, D4 adhesives are designed for the most demanding applications. Products bonded with D4 adhesives can be exposed to running water or outdoor weather conditions for extended periods. These adhesives are ideal for outdoor use (e.g., wooden fences, garden furniture, windows, and doors).
How can I easily remove pen marks from chipboard (melamine)?
We recommend using FSG Type B industrial cleaner. It removes glue residues and pen marks on chipboard. It can be used on plastic-based surfaces like ABS, PVC, and melamine, but not on lacquered surfaces. It's also great for removing old stickers or adhesive tape.
Can wood care oil be tinted with pigments?
ADLER’s range of wood care oils already includes oils tinted in standard wood shades, but clear oils can be tinted to various tones up to a certain pigment concentration. We recommend consulting an expert and testing on a sample first.
Why do colors change over time?
Outdoor exposure to UV light and rain breaks down pigments, paints, and varnishes over time. This natural process can only be slowed down with proper maintenance. Even indoor surfaces may change due to UV light, especially with clear coatings, which offer no UV protection and lead to yellowing.
Why are clear coatings only partially suitable for outdoor use?
Clear coatings offer minimal UV protection. While they can slightly slow the natural greying process of wood, they cannot fully prevent it. If you choose clear coatings for outdoor use, frequent reapplication is necessary. Pigmented glazes provide much better durability.
Why do coatings, paints, and varnishes sometimes dry slower than expected?
Slower drying of ADLER products can result from several factors: substrate type, coat thickness, ambient temperature and humidity, and ventilation. Low temperatures or high humidity can significantly delay drying. Woods rich in tannins or oils (e.g., oak, teak) also slow drying. Products that dry through oxidation are especially sensitive. In most cases, delayed drying is due to application conditions, not a product defect.
Do you have any questions?
Didn’t find the answer to your question? Please contact our support team, who will be happy to help you.
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