DIY Network

How to Lay a Tongue and Groove Subfloor

Older houses have plank subfloors. If you are remodeling your house and find that some areas of the subfloor are damaged, you may choose to replace them with new tongue-and-groove boards that fit with the character of your house.

Excerpted from Do It Yourself Home Improvement

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  • Position First Board of Tongue and Groove
  • Place Nail Where Tongue Meets Vertical Edge
  • Place Groove over Nailed Tongue Covering Nails
  • Position Rows of Tongue and Groove Boards
  • Laying Final Board of Tongue and Groove Flooring
  • Flooring-grade Chipboard
  • Screw Tongue and Groove Chipboard in Place
  • Apply Wood Glue Along Tongue of Chipboard
  • Create Tight Joint Along Edge of Tongue and Groove
  • Wipe Away Excess Glue When Boards are Tightened
  • Continue to Lay Chipboard Across Room Floor
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Place Nail Where Tongue Meets Vertical Edge
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DK - Do It Yourself Home Improvement © 2009 Dorling Kindersley Limited

Nail Board Into Place

Place the nail where the board’s tongue meets the vertical edge. Position nail at 45-degree angle. Using a nail punch, tap it in place, until it sits below the surface.

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