| Key Takeaways |
|---|
| Average Cost: $2.20 to $4.75 per square foot installed |
| Total Cost for 200-250 SF: $440 to $1,200 |
| Total Cost for 800-1,500 SF Basement: $1,750 to $7,100 |
| Main Factors: Size of area, material type, location, labor, and additional repairs such as floor joist replacements |
Average Cost To Replace A Subfloor
Replacing a subfloor is a significant renovation task that homeowners may face. A subfloor is the layer of flooring situated directly over the floor joists and beneath the finished flooring. The cost to replace a subfloor can vary greatly depending on several factors such as area size, material used, labor costs, and the room’s location.
Subfloor Replacement Cost By Size
The table below breaks down the average cost to replace a subfloor by different area sizes:
| Area Size (square feet) | Average Cost |
|---|---|
| 50 | $110 – $240 |
| 100 | $220 – $475 |
| 200 | $440 – $950 |
| 500 | $1,100 – $2,400 |
| 750 | $1,650 – $3,550 |
| 1,000 | $2,200 – $4,750 |
| 1,200 | $2,650 – $5,700 |
| 1,500 | $3,300 – $7,100 |
| 2,000 | $4,400 – $9,500 |
| 2,500 | $5,500 – $11,900 |
Subfloor Price By Material
The type of material used for replacing the subfloor significantly impacts the overall cost. Below are the average costs for various subfloor materials:
| Material | Average Cost Installed (per square foot) |
|---|---|
| Plywood | $2.50 – $3.00 |
| Oriented Strand Board (OSB) | $2.20 – $2.80 |
| Advantech | $2.75 – $4.50 |
| Amdry | $2.80 – $4.75 |
| Barricade | $2.80 – $4.75 |
| DRIcore | $2.75 – $4.00 |
| DRIcore R+ | $3.20 – $4.50 |
Plywood Subfloor
Plywood is a widely-used material for subfloors due to its strength and affordability. Typically, it costs between $2.50 and $3.00 per square foot installed.
Oriented Strand Board (OSB)
OSB is another common choice for subfloors. It’s slightly cheaper than plywood, ranging from $2.20 to $2.80 per square foot installed.
Subfloor Panel System
Subfloor panel systems such as Advantech, Amdry, Barricade, and DRIcore are more advanced and come with additional features like moisture resistance. These systems usually cost more, ranging from $2.75 to $4.75 per square foot installed.
Cost To Replace Subfloor By Location
Where you’re replacing the subfloor in the house can also impact the labor and material costs. Below is the cost breakdown for different rooms:
| Room | Size (square feet) | Average Cost Installed |
|---|---|---|
| Bedroom | 100 – 180 | $220 – $850 |
| Primary Bedroom | 180 – 250 | $400 – $1,200 |
| Living Room | 250 – 350 | $550 – $1,400 |
| Bathroom | 40 – 80 | $100 – $380 |
| Primary Bathroom | 80 – 120 | $180 – $570 |
| Kitchen | 100 – 200 | $220 – $950 |
| Basement | 800 – 1,500 | $1,750 – $7,100 |
Cost To Replace The Subfloor In A Bathroom
Replacing the subfloor in a bathroom can be particularly tricky due to plumbing and potential water damage. It’s common to see costs ranging from $100 to $380 for smaller bathrooms and $180 to $570 for more significant primary bathrooms.
Cost To Replace The Subfloor In A Mobile Home
In mobile homes, the cost can fluctuate based on the structure and accessibility. Generally, the subfloor replacement cost aligns closely with that of traditional homes but can vary based on labor and material specifics.
Subfloor Replacement Cost Calculator
To give a more accurate estimate, we can use the following cost calculator which factors in materials and labor:
| Factor | Average Cost (per square foot) |
|---|---|
| Materials | $1.60 – $3.25 |
| Labor | $0.60 – $1.50 |
| Total Cost | $2.20 – $4.75 |
Labor Cost To Replace Subfloor
Labor costs will vary depending on whether the job is simple or requires extensive repair and preparation. On average, labor costs range from $0.60 to $1.50 per square foot.
Cost To Replace Floor Joists
If your subfloor damage extends to the floor joists, additional costs will be incurred. Replacing floor joists can cost anywhere from $100 to $300 per joist depending on the complexity of replacement and material type.
Subfloor Repair Cost
In some cases, the subfloor might only need repairs rather than a full replacement. Repairing spots or sections of the subfloor is generally less expensive. Costs typically range from $200 to $500 for minor repairs depending on the extent of the damage.
Signs A Subfloor Needs Replacing
It’s crucial to recognize the signs that indicate your subfloor needs replacement. Some common signs include:
- Squeaking or creaking floors
- Uneven or bouncy floors
- Persistent musty odors
- Visible water damage or mold
- Floors that sag or feel spongy underfoot
Subfloor FAQs
What Is A Subfloor?
A subfloor is the structural surface over the floor joists that provides support for the final floor covering. It ensures a level and stable base for various flooring types such as hardwood, tile, or carpet.
How Long Does A Subfloor Last?
With proper installation and maintenance, a subfloor can last anywhere from 30 to 50 years. Longevity is influenced by factors like material quality, exposure to moisture, and environmental conditions.
How Long Does It Take To Replace The Subfloor?
The time required to replace a subfloor depends on several factors such as the size of the area and the extent of damage. On average, a subfloor replacement can take anywhere from a few days to a week.
Can You Put A New Subfloor Over An Old Subfloor?
While it is possible to install a new subfloor over an old one, it is not generally recommended. Overlapping subfloors can conceal underlying issues and add unnecessary height to the flooring.
Can You Repair Or Replace The Subfloor From Underneath?
Repairing or replacing a subfloor from underneath is feasible but can be complicated. This approach typically requires access to the floor’s underside, often possible in basements or crawl spaces. It is best done by professionals to ensure structural integrity.
Who Fixes Subfloors?
Licensed contractors and specialized flooring professionals commonly perform subfloor repair and replacement. It is crucial to hire a certified and experienced professional for this complex task to ensure safety and quality.
Getting Estimates From Subfloor Contractors Near You
When it comes to subfloor replacement or repair, getting multiple quotes from reputable contractors is essential. This helps ensure you receive a fair price and quality service.
Questions To Ask
Before hiring a contractor, consider asking the following questions:
- Are you licensed and insured?
- Can I see references or reviews from past projects?
- What is the estimated time frame for this project?
- Are there additional costs for unforeseen issues like mold or water damage?
- Can you provide a detailed written estimate?
Making an informed decision can save you both time and money while ensuring a durable and safe subfloor.
