How to Caulk Cracked Hardy Plank

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HardiPlank is a major brand of siding made for houses. The product is a combination of wood and cement called fiber-cement. This material is an affordable alternative to completely renovating your existing siding, and it is more appealing than standard vinyl planks. Although it is convenient, HardiPlank siding is still susceptible to cracks, which requires a caulking treatment to repair.

Things You'll Need

  • 2 rags
  • Denatured alcohol
  • Scissors
  • Silicone caulk
  • Metal wire
  • Caulking gun
  • Dampen a dry rag with denatured alcohol and wipe the area surrounding the crack. This cleans all visible dirt and residue from the surface and prepares a clear foundation for caulking.

  • Cut the plastic tip on a tube of silicone caulk. Break the seal within the nozzle using a stiff metal wire or nail. Some caulking guns come equipped with a puncturing tool for this purpose.

  • Secure the tube into a caulking gun. For the best application, use a gun that has smooth trigger and no-drip features.

  • Insert the tip of the caulking tube into the crack in the HardiPlank. Holding the gun at a 45-degree angle, squeeze the trigger to dispense the silicone.

  • Draw the gun smoothly along the siding as it fills the crack. Wipe the excess caulk from the plank with a dry rag.

  • Allow the sealant to cure for 24 hours.

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References

  • Photo Credit house siding 3 image by Psycience from Fotolia.com
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