How to caulk between floor boards

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How to caulk between floor boards
Seal the space in between floor boards using silicone caulk. (wood background image by MAXFX from Fotolia.com)

Hardwood, laminate and other prefabricated types of flooring often feature spaces in between the floorboards. If there are gaps in the installation that are particularly large, dirt and other residue can easily become trapped within them. A quick and simple solution to fixing this problem is to caulk between the floor boards. Silicone caulk is an airtight sealant that is water-resistant and very subtle when applied. The compound can withstand drastic temperature changes and exposure to household cleaning materials.

Skill level:
Moderate

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Things you need

  • Vacuum
  • Mop
  • Detergent
  • Scissors
  • Silicone caulk
  • Wire
  • Caulking gun
  • Rag

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Instructions

  1. 1

    Thoroughly vacuum the floor boards that require treatment. Clean up any traces of dirt or grime using a mop soaked in a mild cleaning detergent, then allow the floor to air dry.

  2. 2

    Use a sharp pair of scissors to cut the tip on a cartridge of silicone caulk. Leave an opening that will allow you to dispense a bead of caulk no more than 0.6 cm (1/4 inch) wide.

  3. 3

    Puncture the foil seal within the tip of the cartridge using a stiff wire, then load the tube into a caulking gun. Align the tip with a seam in between the floorboards and hold the gun at a 45 degree angle.

  4. 4

    Squeeze the trigger to apply the silicone caulk, with the tip of the cartridge touching the targeted space. Maintain consistent pressure and draw the gun along the length of the seam to fill it with the sealant.

  5. 5

    Repeat the same procedure for other desired cracks in the floor. Quickly wipe any excess silicone with a damp rag before it begins to harden. Otherwise, allow the sealant to cure completely over a full 24-hour period.

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