| Since the stair
stringer is the main structural support for the stairway, you will need
to make sure that you have selected a nice piece of lumber. When I first
started working in construction, all we used was a select grade lumber
(the best), but as prices increased, it wasn't long before I started to
see number 2 and better, otherwise known as construction standard.
Important Tip
These are only general specifications that can be applied to lightweight
construction projects and it wouldn't be a bad idea to check with a
structural engineer, if you are building a heavy-duty stairway.
Stairways that are built with the wrong materials will create a safety
hazard and serious injuries.
A nice piece of number 2 will work just fine as long as large knots
aren't located in the wrong spot, weakening the stringer.
Try to avoid using dried out lumber also, because it will be difficult
to cut and nail. Lumber that has been sitting in the sun for too long
usually cracks or splits when you nail, cut or even screw into it.
You should also try to avoid using lumber that is too wet, because it
will shrink, when it dries, creating problems for the stairway. Often
these problems come in the form, of annoying stair squeaks.
Now here's another important tip that you should consider, when ordering
your lumber. If you need a 12 foot long piece of lumber, for your stair
stringer's, it wouldn't be a bad idea to order 14 footers.
This will give you some room for error, just in case you didn't figure
the length of the stair stringers, correctly. It will also provide you
with additional room to position your stair stringer pattern, when
marking and cutting the rest of your stringers.
Back To>
How To Build Stairs
Next>Staircase Treads -
Stairway Risers -
Handrailing -
Guardrail
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