Stairwork

[nightfighter]

Poplar is a more stable wood than pine, and is why I recommend poplar for trim where budget allows. It also holds fasteners better. Stairs have dozens of parts, so they can and do loosen up over time. If it is the front of the tread that squeaks, tighten it up by refastening to the riser it is rubbing against. If it squeaks in the rear, refasten to the stringers. Predrill, angle at approx. 45 degrees from either side of each stringer and be sure to set the nail below the surface. Also helps if you have someone standing on the tread to load it down on the stringer. Single fasteners set straight in will loosen up.

Not sure what his secret part is though....

[Slipknot]

start with a good foundation, the framing can't be done by a hacker. any flex in the framing, will compound it but I agree, tight joints and plenty of glue to do the work. I like PL Premium, but nailed well because that stuff expands.

[Rmarsh]

Originally Posted by Slipknot

start with a good foundation, the framing can't be done by a hacker. any flex in the framing, will compound it but I agree, tight joints and plenty of glue to do the work. I like PL Premium, but nailed well because that stuff expands.

Slip...unfortunately the subcontracted framers, who build the rough stairs, make my job more difficult because of the errors they make. Before the house is drywalled I go and check the rough stair framing.
It's not unusual for me to have to remove them entirely, and reframe them correctly. We have tried getting the framer to correct them, but they usually hack them a second time. I have no interest in teaching, especially to those who speak no English.

Beyond that, there are some techniques I have developed over the years (hundreds of stairways) that strengthen the entire staircase and do prevent squeaks.

[Slipknot]

and you SHOULD keep those techniques you've developed to yourself just like fishing spots, they will help ensure your results and success.
theses days it's best to be wanted for your quality, good for job security. I had a similar case a couple years ago, the framer hacked it, then the homeowner too cheap to pay me to do it right had the framer chop it again and we ended up sistering new framing in in order to do the job. It is similar to the framed walls in kitchens that use any old 2x4 no matter how bowed or out of level, makes cabinet install very challenging to say the least, I've been known to cut into a 2x4 part way the from the other side brace against it, set cabinets , then remove brace. Some of the stuff in new construction you see , you just have to shake your head at.

keep up the good work, looks great