5 Tips for Subfloor Removal and Replacement

As the stable foundation for surface flooring and underlayment, the subfloor is an important part of installing new flooring. The subfloor lies between the joists and the surface level, making it much easier to install any type of flooring, from carpet to hardwood or vinyl. Subfloor makes the flooring more level, smooth, and comfortable.

Common Signs of Subfloor Damage

Wondering when to replace subfloor from water damage? A full subflooring removal and replacement are usually necessary after too much exposure to moisture. This may come in the form of extreme humidity or flooding. Here are some of the most common signs you’ll need subfloor removal and replacement:

  • Uneven flooring

  • Sunken flooring

  • Squeaking floorboards

  • Musty smell

Young beautiful woman wearing casual t-shirt smelling something stinky and disgusting, intolerable smell, holding breath with fingers on nose. Bad smells concept.

  • Shifting or bouncing floors

Installing laminated floor, detail on man hands fixing one tile with hammer, over white foam base layer.

  • Cracked tile

Old and broken floor tiles

  • Loose toilet

Repairman hands installing flush toilet, toilet bowl in the bathroom

  • Cupping hardwood

  • Bubbling linoleum

  • Leaky ceiling

Stains on the ceiling after water leakage

How to Replace Your Subfloor

Now that you know when to replace your subfloor from water damage, you may decide you’re ready to tackle the job yourself. Here are the steps to do so:

  1. Remove any damaged surface level flooring. This may require special tools, depending on the type of flooring you have.
  2. Remove the damaged subflooring. Remove the subflooring using a circular saw set to 1-inch depth. Cut until you hit the structural frame.
  3. Add support framing. Use 2×6 lumber as needed alongside the current framing, with the tops of the two boards level. This is used to shore up a weak board and create a solid base for the subflooring.
  4. Cut new plywood for the subfloor. Purchase ⅝ inch CDX plywood and measure it out to cover the area you’re replacing. Leave a ⅛ inch gap for the wood to expand over time.
  5. Fasten plywood using galvanized 8d nails. A rapid-load screw gun could speed up the process if you’re replacing subfloor across a large area.

Let Removal Tech Do the Dirty Work

Subflooring removal and replacement is a big undertaking. If you’d rather let the professionals handle the job, contact our team of experts at Removal Tech. We’re happy to take care of the heavy duty work and help restore your home or business. And if you’re not sure when to replace your subfloor from water damage, we can come check out your flooring. 


Contact Removal Tech

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