How Thick Is Osb For Sheathing On Interior Walls?

OSB, or Oriented Strand Board, is a popular choice for wall sheathing due to its affordability, strength, and versatility. The U.S. Department of Energy has determined that 7/16-inch sheathing is the minimum appropriate thickness for structural wall sheathing, with an exception for certain applications. The most common size of OSB board is 2440mm x 1220mm, but larger sizes may be available if needed. The industry guidelines set the minimum thickness for structural sheathing panels at 7/16 inch, which translates to approximately 11 millimeters.

To transform interior walls with OSB, follow a step-by-step process from gathering materials to applying primer and paint for a polished and professional finish. OSB/3 is a highly engineered, moisture-resistant, load-bearing panel designed for use in humid conditions and is ideal for many projects. The recommended minimum thickness of OSB panels for timber-frame walls is 12mm when the cells in the supporting frame measure up to 62.5cm on a side, and 15mm when the cells measure up to 62.5cm on a side.

For the sheathing of the walls and roof, a minimum 9mm OSB class3 is required. A 4×10 OSB sheet can eliminate a horizontal seam and is available at lumber yards or Home Depot. OSB wall sheathing comes in thicknesses ranging from 1/4 inch to 1 1/8 inch, but some dimensions are hard to find. Most houses today use 5/16 OSB for wall sheathing, only exterior walls get sheathed.

How thick should an OSB be for interior walls?

SWISS KRONO OSB is a highly effective, water-vapour-inhibiting, and airtight layer used in timber-frame and timber-panel wall constructions. It is available in storey-high formats to minimize joints and trimming scrap, and in storey-high sizes for use as breathable, reinforcing exterior boarding. The recommended minimum thickness for OSB panels for timber-frame walls is 12mm when the cells in the supporting frame measure up to 62. 5cm on a side, and 15mm for frame members spaced up to 83.

3cm apart. Other normal minimum thicknesses for different uses include 9-10mm for packaging, protective panelling, furniture, 15mm for fire protection requirements, 18mm for loadbearing ceiling panels, 22mm for loadbearing, reinforcing ceiling and roof panels, 25mm for ceiling and roof panelling with widely spaced rafters and trusses, 30mm for fire resistance of 30 minutes based on DIN EN 1995-1-2, and 40mm for special applications involving heavily loaded constructions or enhanced fire protection requirements.

Can you use OSB for interior walls?

Oriented Strand Boards (OSB) and sheetrock have similar uses, but OSB has a broader range of applications, including furniture, subflooring, and wall sheaths. Sheetrock is less versatile, with a limited range of applications. The composition and applicability of OSB and sheetrock are nearly equal, but some people may prefer OSB due to slight differences. When making a decision, consider all possible pros and cons of your situation.

What size OSB is commonly used for wall sheathing?

In North America, OSB panels are typically 4 x 8 feet in size, with some manufacturers offering metric sizes in 1. 25 x 2. 50 meters. Additionally, narrow lap widths of 6 inches or 8 inches are available, along with 16-foot (4. 88 m) lengths, which are designed for exterior siding applications.

How thick should interior walls be?

The standard wall thickness in home construction has increased from 4 inches to 6 inches for new construction. This is due to the potential for air movement through a 4-inch wall and insulation layer, causing convection and allowing cold air to enter and heat to leave. The recommended wall thickness for new construction is double the current standard, which is 12 inches. This is because densely packed cellulose insulation in the walls can completely prevent air from leaving or penetrating the living space, achieving an ideal R-value of 3.

7 per inch of insulation. While not recommending rebuilding with 12-inch walls, wall thickness is a consideration for upcoming home construction or renovations, as it offers superior protection, climate control, comfort, and energy efficiency.

Is 11mm OSB structural?

Square Edge 11mm OSB3 board is a load-bearing wood base sheet, manufactured in accordance with EN 300 performance standards. It is suitable for applications in humid conditions, making it ideal for structural and nonstructural projects in both internal and external environments. The OSB3 11mm 2440 x 1220mm is commonly used in wall sheathing, flooring, roofing, roof decking, site hoarding, sarking, GRP roofing, garden sheds, and interior decoration. Its benefits include high quality, durable, knotless timber sheets, a smooth surface that doesn’t require sanding, and its practicality, making it an excellent alternative to traditional wood boards.

Is 11mm OSB ok for shed walls?

11mm OSB sterling board is a moisture-resistant material suitable for various domestic and commercial applications, including shelving, garden sheds, display boards, subfloors, roof decking, wall sheathing, roofing, and flooring. Its absence of knots and voids ensures consistent performance even in humid conditions. Its strength makes it suitable for load-bearing and structural use, as well as long-term site hoardings.

Is OSB a 15-minute thermal barrier?

Fire-rated OSB products like LP FlameBlock offer both flame-spread and burn-through resistance in the same panel, as verified in tests like the 30-minute Class A Flame Spread Rating (ASTM E84, UL723) and 15-minute Thermal Barrier Protection test (UBC 26-1). FRT plywood has a flame spread rating but no burn-through resistance. Fire-rated OSB sheathing has superior load/span and shear design values, reduces dead load and wall thickness, and offers more flexibility in wall opening design and framing and bracing to meet structural requirements. It is crucial for builders and subcontractors to respect the specification and stick with LP FlameBlock.

How far can 18mm OSB span?

The deck, the structural substrate of a flat roof, should have a minimum thickness of 18mm and be double-nailed at each joist. It should support both static and dynamic design loads, as well as any loads from machinery and plant during construction. The deck should be strong and stiff to ensure structural integrity and support the roof covering system, VCL, and insulation board without deflection.

Can you walk on an 11mm OSB?

11mm OSB is a durable panel product that can withstand normal foot traffic, thereby facilitating unimpeded walking.

What OSB is used for wall sheathing?

Oriented Strand Board (OSB) is a popular and widely used sheathing material, consisting of hundreds of thin wood strands pressed into a board with resin and wax adhesives. OSB is installed vertically over the entire exterior of a home, providing structural support and insulation. It can be grouped into two categories: structural sheathing and non-structural sheathing, which can be used together or individually depending on the building. Both types contribute significantly to the overall structure and function of the walls. OSB is essential for both new and older homes.

Is OSB safe for indoor use?

OSB is an environmentally friendly wood-based panel product that uses less formaldehyde than other wood-based panels, contributing to a safer indoor environment. It also has soundproofing properties, reducing noise transmission and enhancing privacy in homes and buildings. OSB comes in different grades and thicknesses, each designed for specific applications and performance levels. The most common grade used in construction is OSB 3, suitable for load-bearing purposes and resisting moderate moisture exposure.

Other grades include OSB 2, less durable and less resistant to moisture, and OSB 4, highly durable and moisture-resistant, typically used in industrial, construction, furniture industries, or high-traffic areas.