Tools needed
- Caulk gun
- Heavy-duty utility knife
- Flashlight
Materials needed
- Expanding gap-foam sealant
- Paintable caulk
- Steel wool mesh
Step-by-step
- 1
Inspect toe kicks and baseboards for gaps, holes, and pipe penetrations.
- 2
Stuff steel wool into larger openings as a pest barrier.
- 3
Fill wide gaps with expanding foam, then trim flush once cured.
- 4
Run a bead of paintable caulk along fine seams and smooth it.
- 5
Let everything cure before wiping down the area.
Common mistakes
- • Overfilling with expanding foam so it mushrooms out
- • Using steel wool alone on damp areas, where it can rust
Maintenance & next steps
Re-check seals annually, especially before fall when pests seek shelter.
When to call a professional
For active infestations or signs of structural pest damage.
Editor's note: This is instructional content for How to Seal Gaps Under Kitchen Cabinets (Pest & Draft Prevention). Replace with your own firsthand experience and photos before publishing.
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