Stairs Structure

[Louisp]

We are replacing the treads and risers on our enclosed stairway. At this point the old treads and risers have been removed leaving the initial bare stairs. I have two questions.

1. NEW STAIRTREADS - We want our stairs to match our living rooms Armstrong Grand Canyon Hickory Engineered Hardwood flooring. The flooring is 3/8" thick. Matching Armstrong stair nose is to be used on the treads.
QUESTION: In your opinion, is it okay to install the described treads over bare stair treads?

2. I am looking at new precut and finished risers. The risers are 0.3437 thick. According to the decription these risers are designed to be installed over existing risers.
QUESTION: In your opinion, is it okay to install the described risers over the bare stair risers?

Here is a photo of the bare stairs.

 

[vinn]

I could say a number of things about your stairs but what you need is a professional carpenter to have a look on site.

You cannot just add nosings to treads - all stair calculations are matters of great safety importance - rise and runs must fit the Code formula's.

 

[Louisp]

I could say a number of things about your stairs but what you need is a professional carpenter to have a look on site.

You cannot just add nosings to treads - all stair calculations are matters of great safety importance - rise and runs must fit the Code formula's.

A stair professional has inspected the stairs after stuctual repairs were made. The new stair treads with noses are designed and installed to meet building codes. Thank your for your comments.