Buy — Floor Joists

: Cold-formed steel members used in both residential and commercial projects.

: Composed of top and bottom flanges (lumber or LVL) with an OSB web. Best for : Long spans and high-performance floors. buy floor joists

The "span" is the distance between supporting walls or beams. Joist size significantly impacts how far they can safely reach. The I-joist Handbook - Masonite Beams : Cold-formed steel members used in both residential

: Maximum durability and resistance to fire, termites, and moisture. 2. Determine Required Size and Span and can span much greater distances.

: The traditional choice made from solid lumber like Douglas Fir or Southern Pine . Best for : Simple residential projects and shorter spans.

: Lighter than solid timber, resists warping, and can span much greater distances.