Windows

Fixed Frame and Picture Windows

Fixed frame windows offer the highest thermal performance and maximum glazed area of any window type. Whether specified as a single large picture window to frame a view, a Passivhaus-grade thermal unit, or a glass-to-glass corner, Nordvest fixed frames are available in any shape or size, in timber or aluminium-clad.

  • Maximum light, minimum frame
  • Passivhaus-compatible thermal performance
  • Triple glazing as standard option
  • Glass-to-glass corner units
Fixed Frame Windows
Key features

Designed for performance and longevity

Every detail engineered to the Norwegian standard, where windows must perform in extreme climates for decades without failure.

  • Maximum light, minimum frame

    Without an opening mechanism, the frame profile is as slim as structurally possible — maximising glazed area, natural light, and the view beyond.

  • Passivhaus-compatible thermal performance

    Fixed frames accept deeper rebates and thicker glazing units than opening windows, making them the natural choice when chasing the lowest U-values for Passivhaus or EnerPHit certification.

  • Triple glazing as standard option

    The deep rebate accommodates triple glazing units achieving U-values below 0.8 W/m²K. Solar control and acoustic laminate glazing are also available.

  • Glass-to-glass corner units

    Two fixed frames can be joined at the corner creating a near-seamless glazed corner available in double and triple glazing.

  • Any shape or size

    Rectangular, arched, circular, raked, or fully custom profiles. Fixed frames are the most flexible window type for non-standard openings and architectural feature glazing.

  • Timber or aluminium-clad

    Available in natural Nordic pine for period and contemporary interiors, or aluminium-clad for a maintenance-free exterior with a warm timber reveal inside.

Made in Norway since 1957

Nordvest has been manufacturing windows and doors in Norway since 1957. The UK operation brings that product range directly to British builders, architects, and homeowners, with bespoke manufacturing, UK-based sales, and full technical support.

Specifications

Technical data

Standard specification shown. Triple glazing and aluminium-clad options alter U-values. Contact us for a site-specific calculation.

Fixed frames and picture windows

A picture window is a fixed frame window specified for its view and light rather than its ventilation. Because there is no opening sash, the entire frame area is glass — giving an unobstructed view and the maximum possible daylight. Nordvest supplies both standard fixed frames and large-format picture windows from the same product range.

Construction

Frames are manufactured from slow-grown Nordic pine — dense, stable, and factory-primed before finishing. The absence of hinges, stays, and locking hardware means fewer components and a lower long-term maintenance requirement than any opening window type.

Glazing

The fixed frame rebate accepts glazing units up to 52mm deep, accommodating high-performance triple glazed units with warm-edge spacer bars. Standard double glazing is also available. U-values as low as 0.6 W/m²K are achievable with the correct unit specification.

Corner glazing

Nordvest can supply glass-to-glass corner configurations where two fixed frames meet at a 90° corner with no vertical post obstructing the view. Available in double and triple glazing, and suited to contemporary residential and commercial projects where an open, panoramic feel is required

Shapes and sizes

Standard rectangular profiles are available in a wide range of sizes. Bespoke shapes — arched heads, raked, circular, and fully custom profiles — are manufactured to drawing. Minimum and maximum frame dimensions are available on request.

Passivhaus applications

Fixed frames are frequently specified on Passivhaus and low-energy projects where maximising thermal performance is the priority. The combination of triple glazing, warm-edge spacer, and a well-insulated timber frame contributes directly to the building's energy balance.

Finishes

Available in a full range of RAL colours (aluminium-clad variants) or factory-stained natural timber. Internal and external finishes can be specified independently.

Ready to specify or get a quote?

Our team works with contractors, architects, local authorities, and self-builders across the UK. We supply to any UK postcode.