Blocking does make joists stronger. When joists are spaced far apart, they can become more prone to bending or sagging under heavy loads. This can result in a bouncy or uneven floor, which is not ideal for a solid and sturdy subfloor.
By installing blocking between the joists, you effectively tie them together, creating a more rigid and stable structure. This prevents the joists from twisting or rotating, which can lead to a weaker floor system. The blocking acts as a reinforcement, distributing the weight and load more evenly across the entire floor.
One of the main benefits of blocking is that it helps to reduce deflection in the joists. Deflection refers to the amount of bending or sagging that occurs when a load is applied to a joist. By adding blocking, the joists are better able to resist deflection, resulting in a more solid and level floor.
In addition to reducing deflection, blocking also helps to prevent joists from twisting or warping over time. This is especially important in situations where the joists are spanning long distances. Without blocking, the joists may be more susceptible to movement and can become weaker over time.
Blocking can also improve the overall strength and load-bearing capacity of the floor system. By tying the joists together, the load is distributed more evenly, reducing the strain on individual joists. This can be particularly beneficial in areas where heavy objects or furniture may be placed, as it helps to prevent localized stress on the joists.
Moreover, blocking can enhance the overall stability of the floor system. It helps to minimize any movement or vibration, resulting in a more solid and secure floor. This is especially important in multi-story buildings or areas where noise reduction is desired.
From personal experience, I have seen the difference that blocking can make in the strength and stability of a floor system. I recently renovated a basement and installed blocking between the engineered I-joists before sheathing the deck. The difference in the floor’s rigidity was noticeable, and it provided peace of mind knowing that the floor would be able to support heavy loads without any issues.
Blocking does make joists stronger by tying them together, reducing deflection, preventing twisting or warping, improving load-bearing capacity, and enhancing overall stability. It is a crucial step in creating a flat and solid subfloor that can withstand the test of time.