EXTERIOR COMPOSITE

Window Sill Mouldings

Exterior Composite Window Sill Mouldings

Window sills are essential components of a window structure, placed on the bottom horizontal edge of a window. Traditionally, they serve to support the window frame or glass and protect the structure beneath. At Mouldex, our window sills extend beyond their conventional role, providing not only aesthetic enhancements but also functional benefits such as deflecting rainwater away from the exterior walls, thereby preventing water damage.

Our exterior window sill mouldings are engineered from a high-quality EPS core, encapsulated in a proprietary cement coating. This innovative composition results in a lightweight, versatile composite moulding that stands out in the market for its durability and aesthetic appeal.

WHAT IS THE BEST COMPOSITE WINDOW SILL MATERIAL?

Superior to Wood

Unlike wood, which is susceptible to weather-related damage including warping, rotting, and splitting due to moisture and temperature fluctuations, Mouldex Mouldings are entirely synthetic and impervious to these conditions. Our composite mouldings require no maintenance, unlike wooden counterparts that need regular painting and sealing. Additionally, Mouldex can manufacture larger profiles in a single, seamless piece—an option not feasible with wood, where multiple pieces must be joined, increasing the risk of splitting and decay over time.

Advantage Over Precast/Stonecast

Compared to heavier precast or stonecast alternatives, Mouldex mouldings are remarkably lightweight, eliminating the need for costly support mechanisms or heavy-duty machinery for transport and installation. This not only reduces the overall cost but also simplifies the installation process, making it quicker and less labor-intensive. In terms of cost-effectiveness, our mouldings are approximately 25% of the total cost of stonecast products when considering all aspects from design through to installation.

Comparison to PVC/GFRC/Fiberglass

While PVC, GFRC (glass fiber reinforced concrete), and fiberglass options might initially seem viable, they also require the assembly of multiple profiles to achieve larger mouldings. These materials are prone to damage under environmental stresses such as precipitation and temperature changes, leading to splitting and necessitating eventual replacement. Mouldex mouldings, however, are designed to withstand these elements without the associated wear, maintaining their integrity and appearance over time without the issues of expansion and contraction that affect other materials.

CUSTOMIZATION

Mouldex isn’t just about offering superior products; we’re also leaders in customization. While our catalog features a variety of pre-designed window trim mouldings, our expertise shines in tailoring these to meet the specific needs of our clients. Whether you require slight modifications to existing designs, wish to replicate an historical profile, or need a completely unique moulding crafted, our team of experts is equipped to deliver precise, high-quality custom solutions.

With an average order fulfillment time of just 7-10 days, Mouldex is committed to not only meeting but exceeding the expectations of architects, builders, and property owners alike, ensuring that each project achieves both functional requirements and aesthetic aspirations.

How Exterior Mouldings Are Made

THIS IS HOW WE DO IT

STAGE 1 - DENSE FOAMCORE
We have cut profiles as small as 1" to mouldings as large as 4' since we opened our doors in 2001. This process is completely computer controlled leaving no room for error. 

STAGE 2 - MESH
An adhesive technical mesh is applied by manually pressing it into the shape. This is done for a couple of reasons. The first and most important is that it provides a bond for the cement coating.

STAGE 3 - FIRST COAT
An extrusion process that is controlled by highly skilled operators on our coating line. First coat is generally 3/16" - 1/4" thick, completely engulfing everything except the back of the shape. 

STAGE 4 - SECOND COAT
After a 24 hour cure period, we can begin to apply a second coat to our mouldings. The final coat is strictly skimmed on, making for a smooth finish, ready to apply and paint.