The internal and external wall thicknesses in a kitchen can vary depending on the construction type, building codes, and regional practices. Here are some typical ranges for both internal and external wall thicknesses in residential kitchens:
Internal Wall Thickness:
- For interior non-load-bearing walls: 3.5 inches (approximately 89 mm) to 4.5 inches (approximately 114 mm). These walls don't support any structural load and are usually made of standard 2x4 or 2x6 lumber.
- For interior load-bearing walls: 5.5 inches (approximately 140 mm) to 7.5 inches (approximately 191 mm). Load-bearing walls are designed to carry the weight of the floors and roof above and require additional thickness and structural support, often using 2x6 or larger lumber.
External Wall Thickness:
- For exterior walls in standard wood frame construction: 5.5 inches (approximately 140 mm) to 7.5 inches (approximately 191 mm). These walls are typically made of 2x6 lumber to provide better insulation and accommodate electrical and plumbing installations within the wall cavity.
- For masonry or concrete block exterior walls: 8 inches (approximately 203 mm) to 12 inches (approximately 305 mm) or more, depending on the specific design and insulation requirements.
Keep in mind that these dimensions are approximate and can vary based on local building codes, construction methods, and the specific design of the kitchen or building. It's essential to consult with a qualified architect, engineer, or builder to determine the appropriate wall thicknesses for your specific kitchen renovation or construction project. Additionally, external wall thickness may be different from interior wall thickness due to insulation and weatherproofing considerations in exterior walls.