How Much Does a Floor Joist Cost?
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Floor joists, the shafts that support floors, often rot or have to be repaired or replaced. Joists are typically built from two-inch thick lumber, and most species of softwood framing lumber are acceptable for floor joists as long as they are in compliance with the size and grade specifications for the span. The most commonly used dimensions for floor joists are 2” x 10” and 2” x 12.” Prices for dimensional lumber vary from supplier to supplier and are usually dependent on several factors.
How much does it cost?
- On average, a typical 2 x 12 x 12 piece of lumber is going to cost anywhere from $12 to $17 per piece. Like mentioned above, the price is going to depend on the type of wood and company selling it.
- For instance, at Lowe’s, the cost of a 2 x 12 x 12 Douglas-Fir dimensional lumber is $13.64 per piece, while a 2 x 10 x 10 dimensional lumber of the same species cost $8.98 per piece.
- HomeDepot.com has a 2 x 10 x 10 Prime Kiln-Dried Southern Yellow Pine Lumber that costs $9.79 each, while a 2 x 12 x 12 Prime Southern Yellow Pine Lumber costs $14.46 per piece.
- Bernard-Daniels Lumber Co. the cost of a 2 x 12 x 12 dimensional/treated lumber is $15.75, while a 2 x 10 x 10 costs $9.79.
- The American Wood Council provides an Online Span Calculator to calculate all species and grades of commercially available lumber. The “span options” calculator allows selection of several species and grades for evaluation purposes.
- If the floor joist is damaged and and you need to have it repaired by a professional, the costs can vary anywhere from $150 to $400 per joist. For the average room that is titled, the price can easily soar into the thousands. To find an exact quote, free quote search engines such as HomeAdvisor.com can help.
- If the home has to be hoisted up and the entire joints have to be replaced, each section of floor joists could run $5,000 to $15,000, depending on the size.
- Overall, the actual lumber for the floor joist will cost $12-$17 per piece, the price for repair could be $200-$1000 or more, and the price for a completely new floor joist will be up to $15,000.
What is going to be included?
- Dimensional lumber for your floor joists can be bought by piece or in bulk. Before buying the materials, be sure to go through a few preliminary steps, which include choosing the kind of wood you will be using for your floor joists, measuring the joist span length, determining the deflection limit, and calculating the live load.
What are the extra costs?
- When repairing floor joists, you may also need to purchase other items to be used when in the process of renovating. These may include joist hangers, joist hanger nails, joist pocket liners, floor joist ties, and floor joist insulation.
- Calculate the delivery fees. If you are having multiple floor joists delivered, the costs will greatly depend on the distance they have to drive.
Factors that influence the price:
- Dimensions. The measurements of the dimensional lumber have different pricing structures. The greater the dimensions, the higher the price. However, the larger the dimensions are, the fewer boards you will need.
- Location. Some retailers vary the pricing of their stocks according to location of the buyer.
- Supplier. Whether you purchase your lumber from a local home improvement store, a lumber mill, or online, the prices will vary.
Tips to know:
- Dimensional lumber prices can fluctuate over a short period of time.
- If required and if the store allows it, you can have the lumber cut at the store according to the size you need.
- Not all dimensional lumber measurements are accurate. If you want to get the real size, you can opt to purchase the rough cut from a mill and saw the lumber yourself.
- Check the quality of the lumber and inspect it for cracks, splinters and knots before buying it.
- Because the floor joist provides all the support and structure for the floor, it is extremely important. If you are going to work on it yourself, make sure you measure very precisely. Hiring a professional for this job is highly recommended.
How can I save money?
- Do a comparison check. Get at least five price quotes from various home centers and lumber yards and compare their prices. Base your decision on who gives the most reasonable price.
- Buy in bulk or wholesale to obtain discounts. Most of the time, the hardware store will have their prices listed on their website.
- Check for special deals like free shipping for minimum orders or a particular percentage off.
- If you are going to hire a professional to do your repair or replacement, have them provide the lumber and supplies for you. You will pay less for the installation and parts from the same company over paying for the two things separately.