Improve Your Entryway with the Right Exterior Door Threshold
Hartford Building Products offers high-quality inswing and outswing thresholds, as well as compatible threshold extenders . Whether you are replacing a worn threshold or completing a new installation, selecting the correct style, width, length, and extender helps provide a secure fit and dependable weather protection.
What Is an Exterior Door Threshold?
An exterior door threshold is installed across the bottom of an entry door opening. It creates a sealing surface for the door sweep or bottom seal and provides a smooth transition between the interior floor and exterior surface.
A properly installed threshold can help:
- Reduce drafts beneath the door
- Limit water infiltration
- Improve the effectiveness of door sweeps and weatherstripping
- Protect the bottom of the doorway from everyday wear
- Give the entryway a clean, finished appearance
Our thresholds combine moisture-resistant composite materials with durable aluminum components for reliable performance in exterior applications.
Inswing and Outswing Thresholds
Before ordering, determine whether the exterior door opens into or away from the building.
- Inswing thresholds are made for exterior doors that open into the building.
- Outswing thresholds are made for exterior doors that open toward the outside.
The two styles are designed differently to accommodate the direction of the door and manage water correctly. Choosing the appropriate threshold is important for proper fit, drainage, and weather protection.
Measure Carefully Before Ordering
Measure the doorway and existing threshold before selecting a replacement. Confirm the required length, overall width, door swing, and finish.
Our thresholds are supplied slightly oversized so they can be trimmed during installation. This gives the installer greater flexibility and helps create a more precise fit within the opening. If the threshold does not cover the full depth of the sill or wall, a compatible threshold extender may be added.
Features of Our Exterior Door Thresholds
Adjustable Composite Cap
Each threshold includes an adjustable composite cap. The cap can be raised or lowered to meet the door’s bottom seal more precisely, helping reduce gaps and improve weather protection.
The cap should be adjusted so the door closes securely without excessive resistance. Proper adjustment creates firm contact with the sweep while allowing the door to operate smoothly.
Moisture-Resistant Composite Base
The composite base is designed to resist moisture and rot, making it well suited for exterior doorways exposed to changing temperatures and weather conditions. Unlike untreated wood, composite material does not absorb moisture in the same way, helping support long-term performance.
Durable Aluminum Finishes
Available finish options include:
- Mill-extruded aluminum with a silver appearance
- Dark bronze anodized aluminum
Both options provide a durable, professional-looking surface that complements a variety of entry doors and exterior finishes.
Why Choose Hartford Building Products Thresholds?
Our exterior door thresholds are designed for durability, adjustability, and easier installation.
Key advantages include:
- Moisture-resistant composite caps and bases
- Adjustable caps for improved contact with the door seal
- Durable aluminum construction
- Oversized lengths that can be trimmed for a custom fit
- Multiple widths, lengths, and finish options
- Compatible extenders for wider sill conditions
When combined with a properly fitted door sweep and quality weatherstripping, a new threshold can help reduce air leakage and improve the overall weather resistance of an exterior doorway.
Available Inswing Threshold Options
Our inswing thresholds are designed for exterior doors that open into the building.
Available Lengths
- 36 inches
- 72 inches
Available Widths
- 4-9/16 inches
- 5-5/8 inches
Available Finishes
- Mill-extruded aluminum in a silver color
- Dark bronze anodized aluminum
Available Configurations
- 4-9/16-inch threshold with a composite oak-style cap and composite base
- 5-5/8-inch threshold with a composite oak-style cap and composite base
Available Outswing Threshold Options
Our outswing thresholds are designed for exterior doors that open toward the outside.
Available Lengths
- 36 inches
- 72 inches
Available Width
- 5-5/8 inches
Available Finishes
- Mill-extruded aluminum in a silver color
- Dark bronze anodized aluminum
Available Configuration
- 5-5/8-inch threshold with a composite oak-style cap and composite base
Complete the Installation with a Threshold Extender
Some entryways require additional width to cover the entire sill area. In these situations, a threshold extender can provide the extra coverage needed for a clean, finished installation.
Choose an extender that is compatible with the width and style of your threshold. Always verify the dimensions of the opening and product before ordering.
Create a Better Seal at the Bottom of Your Door
A damaged, poorly fitted, or incorrectly adjusted threshold can allow drafts and moisture to enter beneath an exterior door. Replacing it with the correct threshold—and adding an extender when necessary—can improve the fit, appearance, and weather resistance of the entire entryway.
Explore Hartford Building Products’ selection of exterior inswing and outswing door thresholds to find the right option for your project.