Core Materials

MDF

MDF stands for Medium Density Fibreboard. At GLT Herrljunga, we primarily use MDF as a core for wrapping with veneer or foil. The density of MDF typically ranges from 620 to 730 kg/m³. The boards have a smooth surface on both sides, making them highly suitable for wrapping applications. In most cases, we select a quality that allows for milling down to the core with excellent results. MDF is available in thicknesses ranging from 3mm to 60mm.

MDF is available with different characteristics depending on the application

• Through-coloured MDF where the entire board can be black, grey, red, green, etc.
• Moisture resistant board (usually green) that is intended for use in climate classes 1 & 2.
• Flame-retardant board (usually red) that has a European classification of B-S1-d0.
• LDF (low density fibreboard) is a lightweight board.
• HDF (high density fibreboard) is a thinner board with a higher density.

Finger-jointed pine

Pine is a wood that is both light and strong. Finger-jointing produces a material that is stable and durable, with no visible joints. This method prevents the wood from cracking or deforming over time.

As pine is a renewable material, it is also an environmentally friendly choice for those who want to make sustainable building and interior design choices.

Gypsum

Gypsum is a lightweight material that is suitable for a wide range of profiles. It is an environmentally friendly material that offers good sound insulation and is fireproof, making it a practical choice for environments such as public buildings.

Particleboard

The density of particleboard is usually between 550 – 700 kg/m3. Like MDF, particleboard is not suitable for milling, as the fibres are coarser, which also results in a surface and edges that are not as smooth as those of MDF.

Particleboard comes in several different varieties, where, in addition to standard, moisture-resistant and fire-rated are the most common. Boards usually measure 1220×2500.

Plywood

Plywood is constructed from layers of wood veneers that are glued together, with the grain direction rotated 90 degrees for each layer. We primarily use birch plywood for projects that require high dimensional stability.
Plywood is available in many different thicknesses, the most common being 9mm, although some boards can be up to 24mm thick. We usually use 1525 x 3050 mm B/BB grade board, where one side is B quality and the back BB.

• Grade B – A few point knots with a maximum diameter of 6mm, minor colour variations, polished.
• Grade BB – Point knots are permitted, as are ingrown knots max. diam. 25mm.Irregular structure on veneer allowed, colour variations and coloured stripes allowed, larger knots are repaired with plugs, any cracks are repaired with synthetic putty, plastered.

Aluminium

Aluminium is a strong and corrosion-resistant material used in a wide variety of building and interior components. Thanks to its low weight and high strength, aluminium is easy to handle and install. Aluminium is also environmentally friendly, as it is 100% recyclable.

Board lamellas

Board lamellas are boards made from a composite of wood and board materials. Lamella wood consists of a thick core of glued wooden bars in solid or finger-jointed strips, with wood fibreboard glued on both sides. We use this board for applications that are subject to stringent dimensional stability requirements and need a smooth surface.