Heritage Sash Box Windows - Timber Sash Window

Our Heritage Box Sash window is specifically crafted to serve as an enhanced replacement for original period windows commonly found in listed Georgian, Victorian, and Edwardian historic properties and conservation areas. This window is double glazed with ultra slim double-glazed units, solid glazing bars, putty fronted and incorporating concealed draught exclusion to keep the aesthetics of the original window but with much greater performance, typically achieving U-values of 1.8–1.4 and acoustic ratings of 38–30 dB depending on the make-up of the glass unit.

Constructed with slim frame and sash profiles, the Heritage Box Sash window functions with a classic system of cords, weights, and pulleys. A spring balance option is also available. These windows are typically installed within a check reveal, allowing the box to remain largely concealed behind external brick or stonework, although it can also be fitted flush with the brick face, where the box remains visible and is often finished with an architrave.

TRC’s Heritage Box Sash can be supplied fully finished with a 3-coat spray applied microporous water-based paint system or can be supplied primed only for a topcoat to be applied on site by others.

All of our windows come with a choice of sash lifts, fasteners, locks and pulley wheels with a wide range of finish options including antique brass sash, polished chrome, satin nickel, polished brass, matt bronze and polished nickel.

Features and benefits:

• Traditional putty is used externally to secure high-performance Slim Sightline double glazing.
• Available single or double glazed, the authentic-looking Slim Sightline double glazing has good acoustic and thermal performance.
• Solid glazing bars are supplied as standard.
• Bespoke windows and doors are available; consult manufacturer for details.
• Echo the style of historic windows.

Guarantees:

TRC Contracts Ltd offers robust guarantees on all TRC window ranges we supply and install. The following general terms apply on all new windows:

• Expected Lifespan: All our windows are designed with a 60-year service life guarantee.
• Manufacturing and Material Defects: ten-year guarantee.
• Finishes: The standard three-coat opaque finished joinery is guaranteed for ten years, and the stain finishes are guaranteed against blistering or flaking for six years.
• Seals: The seals on double-glazed units are guaranteed for ten years (from the date of delivery).
• Ironmongery: Functional failure is guaranteed on ironmongery for two years.