What Are They?
A drop seal is a clever mechanism fitted to the underside of your door. It’s rebated into the bottom edge, making it completely invisible once installed. When the door closes, a concealed bar automatically drops down to seal the gap at the threshold. When the door opens, it retracts — so there’s no dragging, no scuffing, and nothing you can see from the outside. It’s neat, invisible, and highly effective.
Why Install Drop Seal Doors in Your Home?
- Energy Efficiency – Reduce drafts and heat loss by sealing the gap under the door, keeping your home more comfortable and lowering power bills.
- Noise Control – Dramatically cut noise transfer between rooms or from outside.
- Dust & Allergy Protection – Keep dust, pollen, and smoke from creeping under the door.
- Privacy & Comfort – Adds an extra layer of privacy for bedrooms, offices, and nurseries.
How Much Do Drop Seals Cost?
Adding a drop seal is surprisingly affordable:
- Standard doors: from $150 (supply & install)
- Larger or oversized doors: from $250
Compared to the cost of a new door, this small upgrade pays itself off quickly in energy savings, noise reduction, and comfort.
Why Aren’t More Suppliers Talking About Drop Seal Doors?
Drop seals have been standard in commercial builds for years, but the domestic market has lagged behind. Most door suppliers focus on the door slab itself, ignoring performance upgrades that make a home quieter, cleaner, and more energy-efficient. This is where Doors Replaced is different. We believe in bringing commercial-grade innovation into everyday homes.
Where Should You Use Drop Seals?
- Front doors – seal against weather and noise.
- Internal doors – for bedrooms, offices, or any space where sound control matters.
- Garage-to-house doors – stop fumes, drafts, and dust entering the living space.
The Bottom Line
A door isn’t just a door — it’s part of your home’s comfort, efficiency, and security. Adding a drop seal is a small, invisible upgrade that pays off for years to come.
At Doors Replaced, we don’t just supply and install doors — we help homeowners unlock hidden upgrades that make a real difference.
Want to add drop seals to your next door replacement? Contact us today and we’ll make sure your door is not just new, but better than ever.
Or, use our online door finder to get a personalised quote based on your choice of doors!