Replace Exterior Door Threshold
Why It Matters
A worn threshold lets cold air, rain, and insects flow freely under your door, wasting energy and inviting pests.
Quick Guide
- 1
Gather your tools and materials
You'll need: Pry bar, Hacksaw, Drill, Caulk gun. Materials required: Replacement threshold, Exterior caulk, Screws.
- 2
Perform the replace exterior door threshold
Remove worn door threshold and install a new one with proper weatherseal for energy efficiency. Safety note: Wear safety glasses when cutting.
- 3
Verify and clean up
Check that the work was completed correctly and clean up your workspace. If if door frame needs repair, consider calling a professional.
Tools & Materials
Tools
- Pry bar
- Hacksaw
- Drill
- Caulk gun
Materials
- Replacement threshold
- Exterior caulk
- Screws
Community Tips
Thresholds bear significant foot traffic and moisture exposure; failing to remove old caulk completely before installation invites water infiltration that rots the substructure within 1-2 seasons. Scrape back to bare material and inspect for soft wood before proceeding.
A reciprocating saw or hacksaw proves essential for cutting metal thresholds to exact length, but a DeWalt DCD777C2 Compact Drill ($60-80) with a metal-cutting bit prevents costly measurement errors by test-fitting before final cuts.
Oak and aluminum replacement thresholds range from $25-60 depending on door width and material, but sealing gaps with premium exterior caulk like OSI QUAD ($12-18 per cartridge) adds $15-25 to the project and prevents the majority of threshold-related callbacks within five years. ---