Window Aprons

Window aprons provide a clean architectural transition beneath interior windows. While subtle, they play an important role in completing a trim package and enhancing overall design cohesion. Woodwork Manufacturing & Supply offers both stock and fully custom apron profiles to match your project’s style.

What is a Window Apron?

A window apron is the horizontal moulding installed directly beneath the interior window sill. It covers potential gaps between wall and framing while visually anchoring the window within the trim assembly.

We offer a range of pre-designed apron profiles and can also custom-mill new designs to meet specific aesthetic or historical requirements. Whether matching existing trim or creating something entirely new, we ensure precision and consistency.

White window apron moulding installed beneath a window sill

Window Apron Profiles

3D profile diagram of Style A window apron moulding

Style "A"

3D profile diagram of Style A4 window apron moulding

Style "A4"

3D profile diagram of Style B window apron moulding

Style "B"

3D profile diagram of Style B1 window apron moulding

Style "B1"

Window Apron Wood Species

African Mahogany wood species sample

African Mahogany

Alder wood species sample

Alder

Ash wood species sample

Ash

Beech wood species sample

Beech

Birch wood species sample

Birch

Cherry wood species sample

Cherry

Eastern White Pine wood species sample

Eastern White Pine

Hard Maple wood species sample

Hard Maple

Hickory wood species sample

Hickory

Knotty Alder wood species sample

Knotty Alder

Maple wood species sample

Maple

Oak wood species sample

Oak

Poplar wood species sample

Poplar

Primed wood material sample

Primed

Radiata Pine wood species sample

Radiata Pine

Sapele wood species sample

Sapele

Soft Maple wood species sample

Soft Maple

Southern Yellow Pine wood species sample

Southern Yellow Pine

Walnut wood species sample

Walnut

White Oakwood species sample

White Oak

Where to Use Window Aprons

Beneath Interior Windows

Complete the window trim assembly with a cohesive, finished detail.

Living and Dining Areas

Enhance visible window spaces with upgraded architectural moulding.

Bedrooms and Offices

Maintain consistency in trim packages while adding subtle character.

Coordinated Whole-Home Trim Packages

Pair aprons with matching casing and base for a seamless interior design.

Architectural render of a white double-hung window with custom window apron moulding

Frequently Asked Questions

Can you replicate an existing window apron?

Yes. We can match samples or mill new profiles based on drawings.

Are custom sizes available?

Absolutely. Width, thickness, and profile shape can be tailored.

What wood species are offered?

Available species include red oak, maple, knotty alder, poplar, and others upon request.

Do you offer finishing services?

Yes. Pre-finishing is available to reduce jobsite labor.

Connect with a Moulding Expert

Have questions or interested in working with us? Contact us today to get started.

Types of Moulding Profiles

Choose Your Perfect Moulding Profiles

Casing Moulding in a doorframe

Used to frame doors and windows, casing moulding provides a clean transition between the wall surface and openings while adding architectural definition.

Base moulding

Installed where the wall meets the floor, base moulding protects walls from impact and creates a finished, cohesive look throughout the room.

Crown moulding

A decorative element installed where walls meet the ceiling, crown moulding adds depth, dimension, and elegance to any interior.

Jambs moulding

Door jambs form the vertical and horizontal framework that supports a door within its opening, ensuring a precise fit and smooth operation.

Stop moulding

Door stops are fitted within the jamb to control the door’s closing position, preventing damage and creating a snug, finished seal.

Base shoe moulding

A small, rounded trim piece installed at the bottom of base moulding to conceal gaps between the floor and wall, often used with hardwood or tile flooring.

Cove moulding

Curved and smooth in profile, cove moulding is perfect for soft transitions between surfaces or as a decorative detail in cabinetry and ceilings.

Firing casing moulding

Specially designed to meet fire-resistance requirements, fire-rated casing provides both safety and a clean, consistent appearance around rated door openings.

Panel moulding

Panel moulding adds depth and texture to walls or ceilings, ideal for wainscoting, feature walls, or creating custom architectural detailing.

Glass stop moulding

Used to hold glass securely within a door or frame, glass stop moulding ensures a safe, neat, and professional finish.

Miscellaneous moulding

Additional trim profiles and specialty mouldings designed to meet unique design, installation, or restoration needs — available in a variety of materials and styles.

Door & Window Toppers

Decorative header elements that can be selected from our specialty designs or built entirely from scratch.

Window Aprons moulding

Custom-milled apron profiles that coordinate seamlessly with casing and base selections.

Tongue-and-Groove moulding

Specialized T&G moulding created to meet specific width, reveal, and edge detail preferences.

Custom moulding profiles

Precision-milled specialty and fully custom wood profiles crafted to elevate your project from concept to completion.