Search thousands of topics on CostHelper.com

BROWSE ALL TOPICS >> appliances babies & children  cars  consumer electronics health & personal care home & garden personal finance  pets  schools small business weddings
CostHelper > Home and Garden  > Flooring, Painting & Remodeling > Repairing Floor Joists

Repairing Floor Joists Cost


How Much Does Repairing Floor Joists Cost?

 
average costMedium: Repair with Sistering $1,000-$3,000 per roomhigh costSupporting the House with Jacks: $10,000-$30,000
post E-mail post Post   Comments (1)

In a typical home, the surface flooring (such as wood, carpet or vinyl) rests on a subfloor, which rests on joists[1] -- a series of closely spaced parallel beams that support the floor or ceiling loads. Joists are usually supported by a sill (a long horizontal timber that's the lowest part of the framework and rests on the foundation) or a girder (a large beam that's the main support of the building). When replacing rotted floor joists it's important to be sure the girder and sill are still intact.

Typical costs:

  • If only a few joists are rotted primarily at the bottom, they can be repaired using a process known as "sistering" -- after the rot is cleaned away and the timber treated to prevent more problems, a new joist is laid beside the old one and fastened to it. Total costs will depend on the extent of the damage and the ease of access to the joists (through a basement or crawlspace), but in general sistering averages $100-$300 or more per joist, and could run $1,000-$3,000 or more to repair a tilted, wavy or bouncy floor under an average room.
  • If the floor joists are extensively damaged, it will be necessary to support the house with jacks while the joists are removed and replaced. In many cases, the sill may also be rotted and need replacing. Costs can run $10,000-$30,000 or more for a typical home, depending on its size, the extent of the extent of the damage and the ease of access to install jacks and replace the timbers. If the damage is limited to just one section of floor joists, the project could run $5,000-$10,000.
Related articles: Foundation Repair, Hardwood Floors, Tile Flooring, Vinyl Flooring, Refinishing a Hardwood Floor

What should be included:
  • Joists carry the weight of walls, furniture, people, appliances and anything else placed on the flooring they support. Usually wooden floor joists are 2"x8", 2"x10" or 2"x12" timbers -- their size depends on their length, the amount of "load" they're designed to carry and the building codes in effect when the house was constructed. The Family Handyman explains how joists work[2] .
  • If there is sufficient access through a basement or crawlspace, floor joists can be repaired or replaced without significant impact on the rest of the house. However, if there is limited access, all furniture and appliances must be removed from the affected area and the flooring and subfloor torn out. The Family Handyman explains how to "sister" damaged joists[3] and HammerZone.com describes using a jack to raise a slightly sagging floor[4] .
Additional costs:
  • Floor joists can be damaged by boring insects such as termites or extended exposure to water. Before you replace damaged floor joists, you must exterminate the insects or improve the drainage and ventilation so the problem won't reoccur. Costs will vary widely depending on the extent and nature of the original problem.
  • Typically floor joists are repaired or replaced working from below, in a basement or crawl space. But if there's limited access to the joists, it may be necessary to work from above, removing the flooring and subflooring to repair or replace any damaged floor joists. Costs will depend on the extent of the damage and the type of replacement subflooring and flooring chosen.
Discounts:
  • Skilled do-it-yourselfers can sister floor joists with $200-$500 worth of materials.
Shopping for repairing floor joists:
  • ThisOldHouse.com provides tips for hiring a contractor[5] .
  • Get several estimates, making clear what is (and isn't) included in each quote. Request and check references; ask about the contractor's length and type of experience; and be sure they're properly bonded, insured and licensed in your state[6] . See if there are any complaints with the Better Business Bureau[7] .
post E-mail post Post   Comments (1)
CostHelper News


Forgotten Expenses In a Home Addition Budget
Items like construction costs, permit fees or debris removal aren't the only expenses to consider when calculating the total costs of a home remodeling project. || Posted August 5 2013


7 Ways to Stretch Your Reduced Food Budget
End of the year budgets are tight for everyone, especially in this economy.It's especially hard for the millions of Americans who depend on government programs like food stamps to help make ends meet. || Posted November 11 2013

‣ All CostHelper Blog Posts


What People Are Paying - Recent Comments
Floor Joist, Shower Stall Reno and Floor Repairs, Honolulu, HI.
Amount: $6,500.00
Posted by: Dave R. Honolulu in Honolulu, HI.Posted: August 15th, 2013 11:08AM
Contractor: CRU KUSTOM WORKZExtent of Damage: Bad wood rot under Shower Stall & Toilet
Cal with CRU KUSTOM WORKZ came out to our Honolulu rental property and submitted a bid to repair our shower stall floor. This is an old 1930's home and we knew it would be some water damage. After getting several bids from other contractors we decided to go with CRU KUSTOM WORKZ because they were within our budget. We live on the Mainland and have a property management company handle our home, but from what Cal has shown use in his pictures that he sends periodically, I am glad we didn't go with the contractors from our property management company. In the photos of Cal's work this guy knows his stuff and we are secured to know that his work is backed. The repairs turned out great and he guaranteed that the house would fall before the repairs he has made. He is humorous and a very great guy, very professional and upfront. Call him if you need any home repairs on Oahu, he is the preferred Handyman there. Thanks Cal for a job well done.
Was this post helpful to you?   yes     no Report prohibited or spam


 

Comment On Your Experience With Repairing Floor Joists
 
Subject:  *
Amount Spent:  *
Contractor: Extent of Damage: 
Comments: 
Purchased:  Year: 
City:  * State:  *
 
Information about you:
Email:  * Email addresses are not displayed.
Name:  This is the name we'll display with your post.
me on this computer
*=required field.
 



External Resources:
  1.  www.fhwa.dot.gov/environment/recreational_trails/publications/fs_publications/01232833/...
  2.  www.familyhandyman.com/
  3.  www.familyhandyman.com/
  4.  www.hammerzone.com/archives/framecarp/supplement/floor/joist1/raising.htm
  5.  www.thisoldhouse.com/toh/photos/0,,20539027,0000.html
  6.  www.contractors-license.org/
  7.  search.bbb.org/
More Home and Garden Topics
Check Out All Costs for Home and Garden How Much Does Replacing a Water Heater Cost? How Much Do Replacement Windows Cost? How Much Does a Storm Shelter Cost?

Search Thousands of Topics on CostHelper.com




Today's Featured Cost Articles

About CostHelper
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.

CostHelper Community
simple re-keying turned into outrageous replacements
Paid: 1100.00
I wanted locks rekeyed for a purchased home. I found a locksmith who runs his own business and is a one man team. $40 fee, $25 each lock for labor, and parts. Fair enough. I told him I wanted 3 locks rekeyed and one broken lock replaced... [more]
-expensive lesson
Door Lock Cost
Braces 12 yr old son
Paid: 5100.00
Insurance will pay 2000. Try not to deal with a office accepting Horizon NJ Health /Medicaid. Your child may end up waiting over 30 minutes over the scheduled appointment because Medicaid pts. need to be seen first... [more]
-LavenderBlue
Braces Cost
Child 2 surface Cavity Fill
Paid: 170.00
My dentist charges $170 for a 2-surface filling on an elementary aged child. Total bill for 9 cavities and 6 sealants is $1900... [more]
-
Cavity Filling Cost
Shingles Vaccine
Paid: 162.50
Presented at Dr. Office with mild shingles diagnosis. Was given vaccine to treat possible post shingles neuralgia. Poster in exam room showed CDC FDA protocol guidelines changed from age 60 to age 50... [more]
-Flyngator
Shingles Vaccine Cost
Air duct and furnace cleaning
Paid: 320.00
Found a deal on groupon for $59, for duct cleaning. Two guys came out a week later. They cleaned all the vents then stuck a vacuum in the main vent, they said, and let the machine go to work... [more]
-Torro
Duct Cleaning Cost
timing chain replacement
Paid: 2000.00
2001 F150 timing chain, I'm getting quoted a grand more everyone on this site, why is that?... [more]
-Chris Clingshoff
Replacing a Timing Chain Cost