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Specialists In Modern Curtain Walling

Simplex Loft Technical Services LLC offers a comprehensive range of architectural aluminium building products and systems for commercial construction entrances, framing systems, windows and curtain wall systems. Since its beginnings twenty years ago, Simplex has been recognized as an innovator. Through the years, we’ve balanced experience with innovation. We’ve listened to our customers, and we are dedicated to providing the tools our customers need to succeed. Our unrivalled team has a wealth of experience working closely with architects, contractors and clients to develop project solutions from their earliest concepts. We are committed to injecting innovation into new product development to ensure our products meet the most exacting engineering and technical standards whilst overcoming sophisticated design challenges. Simplex’s design expertise, combined with aluminium’s flexibility and recyclability, makes our building systems and products the right solutions for today and tomorrow.

Today’s fast paced construction schedules demand it all – design, innovation, flexibility, high quality, fast installation, simplified fabrication and superior performance. Simplex’s curtain wall systems have been designed and engineered to meet these demands and more. Our curtain wall systems have been assessed in accordance with the relevant BS EN and Centre for Window and Cladding Technology (CWCT) Curtain Wall Standards. Simplex Curtain Wall system provides a unique dry jointed façade solution. We offer the specifier a wide choice in terms of size and shape of shades to suit individual project needs.

Thermal Characteristics

Overall curtain wall thermal performance is a function of the glazing infill panel, the frame, construction behind opaque (spandrel and column cover) areas, and the perimeter details. Curtain wall frame conductance is a function of the frame material, geometry and fabrication (e.g. thermal break).

Thermal Bridging

Aluminum has a very high thermal conductivity. It is common practice to incorporate thermal breaks of low conductivity materials, traditionally PVC, Neoprene rubber, polyurethane and more recently polyester-reinforced nylon, for improved thermal performance.

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Moisture

Water penetration resistance is a function of glazing details (see Glazing), frame construction and drainage details, weatherstripping and frame gaskets, interior sealants (for operable windows, see Windows), and perimeter flashings and seals.

Water penetration resistance

Water can enter the exterior wall system by means of five different forces: gravity, kinetic energy, air pressure difference, surface tension, and capillary action. To mitigate water infiltration, all of these forces must be accounted for in the system design.

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Aesthetics

Key visual features of curtain walls are glazing appearance (see Glazing) and sightlines. Sightlines are defined as the visual profile of the vertical and horizontal mullions.

Visual features

The sightlines are a function of both the width and depth of the curtain wall frame. Lateral load resistance requirements (wind loads, spans) generally dictate frame depth. Where narrow sightlines are desired, steel stiffeners inserted into the hollow frame of aluminum extrusions can help reduce frame depth.

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Acoustics

The acoustic performance of curtain walls is primarily a function of the glazing and internal seals to stop air leakage (covered elsewhere). The sound attenuation capability of curtain walls can be improved by installing sound attenuating infill and by making construction as airtight as possible.

Planning

Incorporating different thicknesses of glass in an insulated glass unit will also help to mitigate exterior noise. This can be accomplished by increasing the thickness of one of the lites of glass or by incorporating a laminated layer of glass with a noise-reducing interlayer, typically a polyvinyl butyral or PVB.

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