Sunrooms By Brady Sunrooms By Brady

December 20, 2012

Why do we use laminated wood instead of solid sawn wood?

Filed under: Business News — Sunrooms by Brady @ 11:42 am

Brady-Built uses laminated wood for three reasons: beauty, structural strength and environmental benefits.  The beauty of natural wood speaks for itself.  It’s hard to imagine anyone preferring the look of extruded aluminum or vinyl over wood.  Taking that wood and laminating it takes it one step further, resulting in a very distinctive aesthetic, yet retaining the warmth and appeal of this natural product.

The structural advantages of southern yellow pine (sometimes called long leaf pine) are well known.  It is a particularly fine grained, dense, and strong variety of wood.  For example, southern yellow pine is about 50% to 60% stronger than eastern white pine, which is the most commonly used wood for framing houses in New England.  Because southern yellow pine is relatively hard, it also resists denting better than most other softwoods. 

Laminating wood is another strategy for getting a stronger beam from wood.  A laminated wood beam is about 30% stronger than a saw-cut piece of lumber of the same dimensions.  This is because sawn lumber inevitably contains knots, splits and other defects that impact its structural strength.  A knot (what shows in the sawn wood where a branch connected to the trunk on an uncut tree) is a weak point in the wood.  When the lumber is sawn into thin strips to make the laminated wood beam, the knot or other defect only goes through a small part of the beam, so it has very little effect on the beams overall strength.

A final advantage of using laminated wood beams is that they are a renewable resource and allow the use of smaller second or third growth timber, so old growth forests can be preserved.  The embodied energy in wood is a small fraction of that of vinyl or aluminum, so their greenhouse effect is small.  Laminated wood beams are the right choice for the environment and our sunrooms.

No Comments »

No comments yet.

RSS feed for comments on this post. TrackBack URL

Leave a comment

Powered by WordPress