Wood Stairs – Identifying Wood Type for Broken Stair Treads and Installing New Risers

stairstreadswood

We have wooden basement stairs that are probably 20+ years old and several of the treads are starting to split down the middle (underneath) lengthwise.

I'm debating replacing the cracked ones or just replacing all of them, but I'm having a tough time figuring out what would the treads are made of:

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In case I decide to replace the cracked ones, I'd like the replacements to be the same type of wood as the others, so it looks more or less consistent (I understand new boards will not be as faded as older ones, but they'll still be the same type of wood, have the same grains, patterns, etc.). Any ideas what wood those treads are made from?

In case I decide the to replace all of them, I'm interested in what type of wood (and dimension) is generally recommended for basement stairs. The existing treads measure 1 1/2" x 9 1/4" so I'm guessing they're all 2x10s.

If you notice in the photo there are also no risers and I'd like to add some. Any recommendation for type of wood (and dimension) that are recommended for risers?

Thanks in advance!

Best Answer

The wood looks like and probably is fir or pine. This is typical in many basements and transitional areas from house to garage for example where only a short stair is needed. It's hard to tell from the pic how long those stairs are.

In any event, if you decide to replace them there are code requirements that need to be met. Although they vary somewhat by jurisdiction below is a typical configuration that I believe will meet code in most areas - but you want to check locally before you build.

If you decide to repair the steps and want to add risers you do need to make sure that you don't compromise tread depth/run to less than that required.

Additionally, you will want to maintain 1" nosing on the stairs. You can use fir for the risers or 1/2" plywood is also suitable.
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