• Skip to main content
  • Skip to header left navigation
  • Skip to header right navigation
  • Skip to after header navigation
  • Skip to site footer
  • Start Here
  • Money Pit Podcast
  • Leave a Review
The Money Pit house logo

The Money Pit

Home Improvement Tips & Podcasts

  • Media Kit
  • Affiliates
  • Ask a Question
  • Spaces
    • Outdoor Living
    • Kitchens
    • Bathrooms
    • Garages & Sheds
    • Basements & Crawlspaces
    • Home Exteriors
  • Reno/Repair
    • Air Conditioning
    • Windows
    • Floors
    • Roofs & Gutters
    • Insulation
    • Lighting & Wiring
  • Popular Topics
    • Storage & Organization
    • Painting & Decorating
    • Cleaning
    • Pests & Wildlife
    • Buying or Selling a Home
  • Features
    • Green Home
    • Pet Friendly
    • Kid Spaces
    • DIY
    • Quick Tips
  • Podcasts
    • The Money Pit Home Improvement Podcast
    • Money Pit Minute Podcast
    • Your Calls, Our Answers Podcast
    • Top Products Podcast
    • ProFiles Podcast
Man painting a white kitchen

How to Add Support to Floor Joists

How to Add Support to Floor Joists

GeneralPodcasts Your Calls, Our Answers Podcast
FacebookTweetPinLinkedInEmail
The Money Pit Your Calls Our Answers Podcast Logo
Leslie Segrete & Tom Kraeutler, Hosts of The Money Pit by The Hosts Leave a Comment
  • iTunes logo
  • Google Podcasts logo
  • Spotify logo
  • Chartable logo

LESLIE: Alright. Now we’ve got Kurt in North Carolina on the line who’s working on a restoration. Tell us about the project.

KURT: So I’ve got 2×6 floor joists spanning 15 feet. And I’d like to know if I rip some ¾-inch plywood and sister it up against the 2x6s and glue and screw it, if that would be sufficient. My crawlspace has six vents under the floor and I want to seal them up. I read it doesn’t need cross-ventilation. It’s kind of old-school. And I put six-mil poly on the ground. Your thoughts, please.

TOM: Alright. Well, first of all, in terms of beefing up the floor joists, sistering the floor joists by doubling them – I don’t necessarily think I would use plywood on them; I would double them. Well, I mean it may not be flimsy but the thing is, if you want to sister a floor joist and help support it, you need to go from bearing point to bearing point. So if it’s going from a girder to an exterior wall, the sister beam has to go the same length.

KURT: Yeah.

TOM: You know, another thing that you could do, Kurt, is you could run another girder, at the midpoint of that 15 feet, from end to end. Now, it doesn’t necessarily have to be – has to be as strong as the main girder for the house, because you’re really just taking the flex out of it. So if you poured a small footing underneath it and just got something in there to kind of stiffen the floor, that would take the bounce out.

KURT: Right. Yeah, I thought about that on the main floor but my second story, I didn’t want to – if I put a glulam in, I only have 7 feet, 5 inches to ceiling height.

TOM: I understand. So, doubling them is a solution, as well as using a mid-span girder.

KURT: Alright, sir. I appreciate the information.

TOM: You’re welcome, Kurt. Thanks so much for calling us at 888-MONEY-PIT.

GeneralPodcasts Your Calls, Our Answers Podcast

Related Posts

Repair for Sagging Floor Joists

Floor Joist Support: How to Eliminate Bounce

The Money Pit Tips & Tricks text logo with lightbulb

Tips for Converting Your Attic into Living Space

Attic flooring added to increase storage space

How to Floor Your Attic for Storage Without Wrecking Your Roof

Installing floor tile

How to Install Floor Tile

cooling options for hot months

30 Home Fixups You Can Get Done in Under 30 Minutes

Related Podcasts

The Money Pit Podcast

Sleek Kitchen Designs, Easy Ways to Refinish Furniture and How to Test Your A/C System

The Money Pit Podcast

How to Recycle Your Electronic Waste, Winter Tree Care Tips, How to Avoid Ice Dams

The Money Pit Podcast

Choosing New Kitchen Countertops, Adding a Skylight that Won’t Leak, and Design Trends to Avoid

Positive Energy Homes #1120172

How to Get Ready for Any Storm

The Money Pit Podcast

Get Outdoor Spaces Ready for Entertaining, How to Clean Your Wood Deck, How to Find and Fix Rotted Wood, How to Fly the American Flag and more

FacebookTweetPinLinkedInEmail

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Sidebar

Trending Posts

Get Ready for the Game with The Money Pit’s $1,000 Tailgate Treasures Sweepstakes!

Attic flooring added to increase storage space

How to Floor Your Attic for Storage Without Wrecking Your Roof

Best Garage Floor: Tiles, Mat or Paint?

Garage Heater Dyna-Glo 30,000 BTU Natural Gas Blue Flame Vent Free Wall Heater, White

Best Heaters for a Garage: Forced Air, Infrared or Portable?

Stock your DIY liquor dispenser!

How To Make A Liquor Dispenser | Video

Ask Us Anything

Ask A Question

Favorite Posts

Attic flooring added to increase storage space

How to Floor Your Attic for Storage Without Wrecking Your Roof

How to Get Rid of Thousand-Leggers Without Getting Grossed Out

Get Ready for the Game with The Money Pit’s $1,000 Tailgate Treasures Sweepstakes!

Best Garage Floor: Tiles, Mat or Paint?

Popular Podcasts

Repair Crumbling Cinder Block

Electric Meter

Service Entry Cable and Electric Meter: Who is responsible for repair?

dirt to use around house foundation

Type of Dirt to Use Around House Foundation

What Smells Like Burning Rubber in My Home?

Newsletter

Get weekly updates with the latest tips and tricks to save money in your home.

As Us Anything

Ask A Question

Social Media

  • Facebook
  • Instagram
  • Twitter
  • YouTube
  • LinkedIn
  • About
  • Media Kit
  • Partners
  • Posts
  • Endorsement Policy
  • Terms & Conditions
  • Privacy Policy
  • Cookie Policy & Solution
  • Radio Stations

Copyright © 2001–2023 · The Money Pit · All Rights Reserved · Powered by Mai Theme

Ask A Question