What variants and SKUs are available for the 11 mm OSB board?
The 11 mm OSB is available as class 2 with SKU LT-4551 and class 3 with SKU LT-4550. If the designations follow EN 300, OSB/2 is for load-bearing use in dry conditions, while OSB/3 is for conditions with increased humidity. The exact standard, manufacturer, and performance specifications should be verified by the stamp on the board and the declaration, not just by the Shopify selector.
Can 11 mm OSB be used for roof sheathing?
OSB is used for roof sheathing, but the specific 11 mm board must be checked for class, support spacing, loads, and roofing requirements. The product does not include a load table or sheet size. For load-bearing applications, the designer determines the thickness and supports, and the installer follows the main axis marking and factory rules for edges and fasteners.
When should I choose 11 mm OSB instead of 9 or 15 mm?
The choice depends on the purpose, support spacing, loads, moisture class, and system requirements. In the catalog, all three thicknesses have classes 2 and 3, but there is no general table for allowable spans. Eleven millimeters is an intermediate size, not a universal compromise. Compare the declarations of the exact manufacturer and structural calculations before replacing a thickness specified in the project.
Does the 11 mm OSB board have a square edge or tongue and groove?
This detail is not specified in Shopify and cannot be reliably determined from the general image. Square edges and tongue and groove require different planning of supports, joints, and usable area. Before ordering, request a photo of the edge, the factory name, and the sheet size. Do not assume the 11 mm board matches the profile of another thickness or brand.
Does 11 mm OSB need to be acclimatized before installation?
OSB is a wood-based material and changes dimensions with humidity variations. European product information recommends acclimating the boards to the environment before fixing. The specific duration, arrangement, and allowable moisture should be taken from the manufacturer of the delivered batch. Sheets should be kept dry, flat, and protected from deformation until installation.
What fasteners are needed for 11 mm OSB?
The fasteners depend on the wooden or metal base, load-bearing function, edge distances, and the mounting table of the specific board. Shopify does not specify screws, nails, spacing, or minimum length. For structural sheathing, an approved fastening scheme is used that does not split edges and provides the necessary corrosion protection. Do not transfer a scheme from another thickness without verification.
