It's hard to say what you should really do to 'fix' your problem, but let me go at it from a different angle.
Idealy, a home's humidity level should be set to between 35 +/- and 40 +/- percent humidity. (Higher-setting in Winter, lower-settin in Summer ...) With that, the floor will move but slightly. That shouldn't cause too much movement but maybe enough for a little character.
Now, IF the floor was installed when the humidity was high, beings that you managed to lower the humidity, the flooring has decided to 'shrink'. You have a few choices, which you will do based on the outcome you desire.
1) Leave the floor alone. You are willing to live w/the lower humidity AND the separation in the floor. 2) Re-install the floor now that the humidity is at a desired level, which will eliminate the gaps. 3) Leave the floor alone BUT remove the barrier so the flooring re-expands, and you'll be willing to live w/the floor and the house as it was originnally 'set'.
I don't suggest you use any rope or filler to fill the gaps UNLESS you've managed to stabilize the humidity levels in the house. I'd stay away from filler and consider rope. You can pre-stain it and it will 'move' a just enough to keep the gaps 'filled'. If the floor moves TOO much, no matter what you put in there, it will come out. Yes, roping is a 4th option but I would install a humidifier first, then let the floor go through 4 seasons, then fill w/rope (assuming you like this option.) Be sure to measure/monitor the gaps through the 4 seasons so you know what the floor is 'doing'.
My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless America!
- 15 Old House Features We Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- 15 Fast Facade Fixes for Instant Curb Appeal
- 9 Expert Furniture Arranging Tips
- 16 Inventive Beds You Can Make Yourself
- 5 Ways to Repurpose Old Window Screens
- 13 Lanterns For Your Porch, Patio, or Garden
- 133 Smart Storage Ideas for the Whole House
- 30 Things Every Adult Should Know How to Do
- 16 New Ways to Store Kitchen Necessities
- 12 Garden Sheds You Could Live (or Work) In
- 17 Jaw Dropping Deck Designs for Your Home
- 10 Woodworking Projects for Beginners
- 283 Great DIY Project Ideas
- DIY Plumbing Pipe Vase
- Decorating "Rules" Meant to Be Broken
- 17 Backsplashes for a Unique Kitchen
- Assembly Required: 15 DIY Kit Homes
- 16 Creative Cabinet Updates
- 10 Ways to Bring Typography Style Home
- Capitalize on Your Attic: 10 Inspirations
- Make Your Own Kitchen Island: 12 Designs
- 10 Creative New Ways to Use Old Bottles
- Small Bedrooms, Huge Amounts of Style
- 22 Tiny Houses We Love
- Tiny Bedroom? 10 Space-Saving Solutions
- Uses for Beer & Booze Around the House
- 1 Dozen Ways to Maximize a Small Yard
- 20 Ways to Make a Small Bathroom Big
- 5 Easy and Creative DIY Lamps