What is Caulk?

Caulk

Caulk
is a soft, flexible material used to seal gaps, cracks, or joints—usually around windows, doors, or where different materials meet—to keep out water, air, and pests.

Why is Caulking Important?

Over time, small cracks and gaps can appear around your home or garden structures. Caulking helps by:

  • Stopping water leaks: Prevents rain or moisture from getting into cracks, which can cause rot or mold.
  • Sealing out drafts: Keeps warm air in during winter and hot air out in summer—helping with energy savings.
  • Blocking pests: Tiny gaps can be entry points for insects—caulk keeps them out.
  • Creating a neat finish: Caulking fills in rough edges and joints, making your project look clean and professional.

Example

Imagine you have a small wooden garden shed. Over time, you notice a small gap where a window frame meets the wall. Rainwater might get in, or bugs could crawl through. To fix it, you can apply a line of caulk along the gap using a caulking gun or squeeze tube. Once it’s dry, the crack is sealed—no more leaks, drafts, or bugs!

💡 Tip for Beginners

Choose outdoor or waterproof caulk for garden projects, and make sure the area is clean and dry before applying. Smooth the line with your finger or a damp cloth for a tidy look.

Stay tuned to The Garden Glossary for more DIY and garden maintenance tips made simple!

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