XL-BYGG Knatterudfjellet - department Fjeldberg in Fredrikstad is a building materials retailer that offers a wide range of building materials. The range includes lumber, insulation, windbreaks, as well as specialized products for roofs, doors and windows. The store also has a varied selection of fasteners, hardware and hand tools, in addition to products for outdoor spaces and protective equipment.
The business is aimed at both professional craftsmen and hobby builders, and offers advice and guidance for various construction projects. XL-BYGG Knatterudfjellet focuses on quality and has a range of environmentally friendly alternatives and sustainable solutions, as well as products related to heating, fire and ventilation systems.