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Re-caulking Cracked Stair Stringer Seams (DIY at Home April)

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This post shares how to caulk hardwood stairs, specifically how I re-caulked cracked stair stringer seams and trim for a beautiful finished look.

How to Caulk Hardwood Stairs & Repair Cracked Caulk

Hey guys, just sharing a quick little tip on how to caulk hardwood stairs, specifically how to re-caulk cracked stair stringer seams and trim. Although we hired out the job of refinishing our carpeted stairs to wood treads, I took on the job or re-caulking the stair stringers and trim. The caulk was cracking, and I couldn’t have that next to my beautiful new staircase!

This topic also lines up nicely with this month’s DIY at Home theme of home improvement. After you check this project out, definitely check out the other projects at the end of the post!

how to caulk hardwood stairs

how to caulk hardwood stairs

Here’s what I used:

(This post contains affiliate links. You can read more about that here. Thanks!)

And here’s how to caulk that wooden staircase!

Step 1: A lazy way would be to just run a bead of caulk over the existing cracked caulk. Although I do some things the lazy way, this was not one of them. I wanted the new caulk to last, so I removed all of the old caulk first.

I did that using a utility knife to slice down the middle of the caulk seam and then used the pliers to pull out a starting point. Most of the caulk came out pretty easily, which was a nice surprise. I expected to be picking bits out for a while.

How to remove old caulk from wooden staircase

How to remove old caulk from wooden staircase

How to remove old caulk from wooden staircase

How to remove old caulk from wooden staircase

Step 2: Once the existing caulk was gone, I applied FrogTape to create the outline of where I wanted to caulk. This was honestly the most time-consuming part of the process. But I’m not a professional caulker, so I always feel like I need the training wheels to get a perfect line.

how to re-caulk cracked stair stringer seams

how to re-caulk cracked stair stringer seams

how to caulk hardwood stairs

Step 3: I began applying the caulk at the top of the stairs on one side and stopped about halfway down. Then I went back to the top, dipped a gloved finger in a bit of water, and ran it along the bead of caulk to press it in to the seam and smooth it out. Just a bit of water helps here. I wiped excess caulk on to a paper towel.

How to caulk wooden staircase

how to caulk hardwood stairs

Step 4: I removed the tape from the caulked area immediately (and carefully) and repeated steps 3 and 4 until all areas were caulked. I also caulked the area between the trim and the wall and then the area between the treads/risers and the stringers using the same method. (Lots. of. tape.)

how to re-caulk cracked stair stringer seams

how to caulk hardwood stairs

After everything was sufficiently dry, I gave the stringers and trim a coat of white paint to match the existing color, and they look brand new! And there ya go.

how to caulk hardwood stairs

how to caulk hardwood stairs

How to caulk wooden staircase

How to caulk wooden staircase

how to caulk hardwood stairs

Share my tips on how to caulk hardwood stairs and repair old cracked caulk on Pinterest:

how to caulk hardwood stairs

how to caulk hardwood stairs

how to caulk hardwood stairs

See more DIY Home Improvement Projects


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Eileen

Monday 22nd of April 2019

Such a great tutorial for how to do this. Love all the details! Your stairs are gorgeous by the way - we still have carpet :(

Cussot

Monday 22nd of April 2019

You did a wonderful job! I have done mine, but I find it cracks again pretty quickly. Perhaps I should have used a more flexible caulk because of the stress a staircase undergoes. It would be great to hear how your lovely result holds up.

Kenya Rae

Thursday 18th of April 2019

I want to remove the carpet from the stairs in my house, but I scared of what might be under there. This has me feeling like I want to find out. That stairway gets all the heart eyes from me....

That Sassy Life coach

Thursday 18th of April 2019

How fab!!

Anam

Tuesday 16th of April 2019

What a huge difference a small little DIY project can make, this turned out Great!

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