Choosing the Right Exterior Door Threshold for a Better Seal

A properly fitted exterior door threshold plays an important role in keeping your home or building protected from the elements. High-quality thresholds and optional extenders from Hartford Building Products can help reduce drafts, limit water infiltration, improve durability, and create a clean transition between indoor and outdoor spaces.

Whether you are replacing an existing threshold or completing a new door installation, choosing the correct style and size is essential for achieving the best fit and weather protection.

Inswing vs. Outswing Thresholds

The first step is determining how your exterior door operates.

Inswing Thresholds are designed for doors that open into the building.

Outswing Thresholds are designed for doors that open toward the outside.

Before selecting a threshold or extender, always measure the width of your door opening carefully to ensure you choose the correct size.

Key Features

Composite Adjustable Cap

Each threshold features a composite adjustable cap that provides a stable top surface while allowing for fine-tuning during installation.

The cap can be raised or lowered to better align with the door's bottom sweep or weatherstrip. This adjustability helps create a tighter seal and improves protection against drafts and moisture.

Durable Composite Base

The composite base is engineered for exterior applications and is designed to resist moisture, prevent rot, and provide dependable long-term performance.

Oversized for a Custom Fit

Hartford Building Products thresholds are supplied slightly oversized, giving installers the flexibility to trim them on site for a more precise fit.

Why Choose These Exterior Door Thresholds?

Long-lasting materials: Composite caps and bases combined with anodized or mill-finish aluminum provide excellent resistance to moisture, wear, and everyday exposure.

Adjustable installation: On-site trimming and an adjustable cap make it easier to achieve a customized fit for your door system.

Improved sealing performance: When properly adjusted and paired with a door sweep or weatherstripping, these thresholds help reduce drafts and improve weather resistance.

Multiple size options: Several widths and lengths are available to accommodate many common residential exterior door applications.

Available Finishes

Thresholds are available in two attractive aluminum finishes:

• Mill Extruded Aluminum — Silver
• Dark Bronze — Anodized Aluminum

All thresholds feature a composite adjustable cap and composite base.

Inswing Thresholds with Composite Oak Cap

For doors that open into the building, Composite Oak Cap thresholds are available in 36-inch and 72-inch lengths.

Available widths include:

• 4 9/16" — Composite Oak Cap and Composite Base; Mill or Dark Bronze
• 5 5/8" — Composite Oak Cap and Composite Base; Mill or Dark Bronze
• 7 13/16" — Composite Oak Cap and Composite Base; Mill or Dark Bronze

Available lengths: 36" and 72"

Inswing Thresholds with Composite Walnut Cap

For select inswing applications, Composite Walnut Cap thresholds are available in 60-inch lengths with a Dark Bronze finish.

Available sizes include:

• 5 5/8" x 60" — Composite Walnut Cap and Composite Base; Dark Bronze
• 7 13/16" x 60" — Composite Walnut Cap and Composite Base; Dark Bronze

Outswing Thresholds

For exterior doors that open toward the outside, Hartford Building Products offers outswing thresholds featuring a Composite Oak Cap and Composite Base.

Available width:

• 5 5/8"

Available lengths:

• 36"
• 72"

Finish options:

• Mill
• Dark Bronze

Get a Better Fit and Better Weather Protection

The right threshold can make a noticeable difference in the performance of an exterior door. With moisture-resistant composite components, durable aluminum construction, adjustable caps, and multiple size options, Hartford Building Products thresholds provide installers and homeowners with the flexibility needed to create a cleaner, tighter, and longer-lasting installation.

Before ordering, remember to determine whether your door is inswing or outswing and carefully measure the opening to select the appropriate threshold width and length.