Building Materials

How many cubic meters of lumber are needed for a 100-square-meter house? (Detailed)

The amount of lumber needed for a house depends on the size of the house and the type of construction involved. However, to give a general estimate, the amount of lumber required for a house typically varies depending on the size and design of the house. Let's look at the details.

For example, the amount of lumber used to support a house’s roof varies depending on factors such as the size of the house, the type of roof, and local building standards. However, as a general guideline, approximately 20 to 30 cubic meters of lumber can be used for the roof of a 100-square-meter house.


To calculate the amount of lumber needed for a 100 m2 wooden house, you can follow these steps:

  1. Wall Thickness: The thickness of the walls directly affects the amount of lumber required. For instance, for a wall with a thickness of 10 cm, you might need 2.5 m3 of lumber, while a wall with a thickness of 20 cm could require 5 m3 of lumber.
  2. Window and Door Openings: Openings for windows and doors reduce the lumber requirement. Each window or door opening can decrease the amount of lumber needed. For example, in a house with 10 window and door openings of 1 m2 each, the lumber requirement could decrease from 20 m3 to 18 m3.
  3. Roof Structure: The type of roof structure also affects the amount of lumber needed. A wooden tiled roof might require more lumber compared to a metal tiled roof.
  4. Type of Lumber: The type of lumber used is also significant. Different types of lumber have different densities, which affects the required amount. For example, if 10 m3 of pine lumber is needed, you might need 10.76 m3 of spruce lumber.

Based on your example, for a 100 m2 wooden house with a wall thickness of 10 cm and 10 window and door openings:

100 m2 – 10 m2 = 90 m2 area, requiring 18.00 m3 of lumber.

So, the calculation for your wooden house would require approximately 18.00 cubic meters of lumber.

Back to top button