Passive Windows Scotland Ltd

WINDOW SYSTEMS

Three materials. One performance-led approach.

We select window systems around the building, the energy target, the architectural intent and the budget — not around a single manufacturer.

TIMBER ALUCLAD

Natural warmth inside. Weather-resistant aluminium outside.

Timber aluclad windows combine an engineered timber frame with an external aluminium skin. The result is a premium window that feels warm and natural internally while the aluminium protects the weather-facing surface from rain, UV exposure and everyday wear.

They are particularly well suited to design-led homes, exposed sites, coastal locations, low-energy projects and renovations where appearance matters as much as long-term performance.

Thermal performanceTimber is naturally insulating, and selected triple-glazed aluclad systems can achieve whole-window U-values around 0.8 W/m²K, depending on size and specification.
Low maintenancePowder-coated aluminium shields the external timber, reducing the regular repainting associated with traditional all-timber windows.
Design flexibilityChoose from contemporary or more traditional profiles, extensive exterior colours and a range of timber finishes internally.
Long-term valueA robust combination of materials designed to deliver comfort, durability and a high-quality architectural finish.

Contemporary timber aluminium style glazing

ALUMINIUM WINDOWS

Slim, strong and made for contemporary architecture.

Modern thermally broken aluminium windows combine strength with slim sightlines, making them ideal where generous glass areas, crisp detailing and long-term durability are priorities.

The inherent strength of aluminium allows larger openings and narrower-looking frames than many conventional alternatives. High-quality powder-coated finishes resist fading, warping and routine weather exposure with very little upkeep.

Slim sightlinesMore glass and less visible frame can create brighter interiors and stronger connections to the outside.
Thermally brokenInsulating sections separate the inner and outer aluminium faces to reduce heat transfer through the frame.
DurabilityAluminium does not rot and is highly resistant to distortion, making it suitable for demanding residential and commercial applications.
Design choiceAvailable in a broad range of powder-coated colours, opening styles and large-format configurations.

Slim architectural aluminium windows and doors

FIBREGLASS COMPOSITE

High insulation with advanced composite reinforcement.

Our composite window options use advanced reinforcement technology to deliver strong thermal performance without relying on heavy conventional steel reinforcement throughout the frame.

This helps create slimmer, more efficient profiles with excellent dimensional stability, while supporting larger elements and highly insulated glazing packages. Selected systems are available with whole-window U-values in the region of 0.7 W/m²K, subject to final size, glazing and configuration.

Energy efficientOptimised frame construction and deep glazing platforms support very low heat loss and triple-glazed configurations.
Strong & stableComposite reinforcement can reduce the need for conventional steel while retaining the stiffness required for larger window and door elements.
Lower-impact thinkingModern profile manufacture increasingly incorporates recycled content, closed-loop recycling and renewable-energy production.

High performance fibreglass composite window

Contemporary designClean profiles, flush aesthetics and modern finishes suit both new-build and refurbishment projects.

WHY HIGH-PERFORMANCE WINDOWS?

More than a lower U-value.

Energy savings

Reducing heat loss through the glazing and frame can lower space-heating demand and improve whole-building efficiency.

Comfort

Warmer internal surface temperatures and better airtightness help reduce cold downdraughts and uneven room temperatures.

Quieter interiors

Appropriate glazing and well-sealed frames can significantly improve acoustic comfort, particularly in busy urban locations.

Lower carbon impact

Better fabric performance reduces operational energy demand, while durable and recyclable materials can improve whole-life performance.

ALUPLAST • ENERGETO NEO

Advanced performance. Architectural simplicity.

Energeto NEO is Aluplast's high-performance window platform, combining clean contemporary design with advanced insulation and reinforcement technology.

The system is designed around energy efficiency, strength and a refined appearance. Flush and non-flush configurations, triple glazing and a broad choice of modern surface finishes allow Energeto NEO to work across low-energy new-builds, renovations and design-led residential projects.

Aluplast Energeto NEO high performance window system
0.69Uw down to 0.69 W/m²K*
76 mmSystem construction depth
RC2Security capability
3Advanced inside technologies

TECHNOLOGY INSIDE

Engineered to reduce heat loss without compromising strength.

Powerdur Inside

Composite reinforcement technology provides stability while reducing reliance on conventional steel reinforcement, helping improve the thermal performance of the frame.

Bonding Inside

Bonded glazing technology connects the glass unit to the sash, contributing to structural stability and supporting larger, highly insulated glazed elements.

Foam Inside

Insulating foam within selected profile chambers further reduces thermal transmission through the frame in the highest-performance configurations.

Energeto NEO technical profile
Energeto NEO
Energeto NEO Flexa technical profile
NEO Flexa

DESIGN OPTIONS

Flush or defined. Contemporary in either form.

Energeto NEO offers different sash and frame expressions so the window can be matched to the architecture rather than dictating it.

Energeto NEO flush window profile
Flush designA clean, near-planar exterior for a restrained architectural appearance.
Energeto NEO non-flush window profile
Non-flush designA more defined sash expression while retaining the NEO system's modern proportions.

WOODEC • ALUDEC • COLOUR

Surface finishes that change the character of the window.

From deep architectural tones to realistic timber effects, the finish range allows the same high-performance platform to sit comfortably in both contemporary and more traditional buildings.

Woodec surfaces reproduce the visual depth and tactile character of timber, while Aludec finishes provide an aluminium-inspired appearance. The result is greater design freedom without changing the underlying window technology.

Energeto NEO frame finishes in dark and wood effectContemporary Energeto NEO window

*Uw performance depends on window size, glazing, spacer, reinforcement and final configuration. Project-specific values should be confirmed at specification stage.

WHY HIGH-PERFORMANCE WINDOWS?

More than a lower U-value.

Energy savings

Reducing heat loss through the glazing and frame can lower space-heating demand and improve whole-building efficiency.

Comfort

Warmer internal surface temperatures and better airtightness help reduce cold downdraughts and uneven room temperatures.

Quieter interiors

Appropriate glazing and well-sealed frames can significantly improve acoustic comfort, particularly in busy urban locations.

Lower carbon impact

Better fabric performance reduces operational energy demand, while durable and recyclable materials can improve whole-life performance.