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


3 Ways to Have the Government Pay You Back for Your Energy Efficient Upgrades
Any renovations or upgrades made to your home this year that included energy-efficient appliances could be eligible for some federal energy tax credits. But it's not just appliances. || Posted December 9 2013


7 Lesser-Known Discounts for the 50+ Crowd
As they age, members of the Baby Boomer generation don't like to admit that they're senior citizens, but they love getting discounts. It's kind of a quandary, because some of the best deals available are reduced prices for older folks. || Posted October 21 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
COST OF EXAM, EUTHANASIA & GROUP CREMATION
Paid: 160.00
Exam $48, Euthanasia of our Cat Grasshopper $84, Aftercare group cremation $28, total of $160. Location Southern California / San Diego County on 8/28/2014. Tried to take her to our Vet of 15 years and they could not see her for a week... [more]
-Crisy
Pet Euthanasia Cost
Yearly trust payment
Paid: 12000.00
I pay about $12,000 a year to my trustee's New Mexico office, However I've often wondered if I was being excessively charged... [more]
-paying more then earning
Trust Cost
ER w/belly ache
Paid: 9988.00
Went in & 2 other cases came in later but had 2 be served 1st. Gave me a pain killer & never saw a doctor. Each thing they did was hurry up & wait... [more]
-charles pace
Emergency Room Visit Cost
Bone graft injection
Paid: 7700.00
The dentist said I needed 7cc's of bone @ $1100 per cc. Is this a reasonable amount? This was to secure an implant the was infected... [more]
-Gala Dali
Dental Bone Graft Cost
wheel balance (front tires)
Paid: 38.00
They busted 1 of my wheel studs, didn't tell me, and replaced it with a really crappy looking lugnut. Oh, and the ride quality is worse. I paid them to do this... [more]
-Hue Janus
Wheel Balancing Cost
Deep cleaning and extractions
Paid: 90.00
When we got our 4-year baby from someone she had horrible breath and our vet recommended a deep cleaning for $175. I checked around and the SOHFGA did the same procedure for $80. So I had them do it at the same time we had her spayed... [more]
-Cocoa's Mom - Phyllis Rios
Dog Teeth Cleaning Cost