Optima Range
SPIRAL BALANCES



Heritage Design with Modern Engineering
The Optima Window by Timber Sash Co is a stunning choice for period homes, carefully crafted to replicate the classic beauty of Georgian and Victorian sash windows. With refined details such as slim sash profiles, narrow meeting rails, ovolo mouldings, and decorative horns, the Optima Window upholds the character and charm of historic architecture. Made from 100% Accoya timber, it guarantees exceptional durability, resisting decay for a lifetime of reliable performance. Each window is expertly prefinished in your chosen colour, with a low-maintenance coating designed to last 12–15 years.
Combining traditional design with innovative features, the Optima Window is equipped with modern spiral balances, ensuring smooth and effortless operation while maintaining a traditional appearance. High-performance double glazing and triple-sealed sashes deliver outstanding thermal efficiency, while secure locking mechanisms and fully coordinated furniture provide added peace of mind. Custom-made to your exact specifications, the Optima Window offers a seamless blend of heritage aesthetics and modern convenience, preserving the beauty of your home while enhancing its functionality.



Why Choose the Optima Range
The Optima sliding sash window is thoughtfully designed to replicate, with meticulous detail, the proportions and elegance of larger sash windows typical of Victorian and Georgian homes. While maintaining the authentic aesthetic of period architecture, the Optima range features a modern design optimised for practicality and performance.
With a slimmer box construction of 140mm (5 ½''), the Optima Window offers versatility for both traditional properties and modern builds. The 50mm (2'') deep sashes accommodate 20mm double glazing while retaining a decorative ovolo moulding on the interior, blending traditional charm with modern efficiency.
The 20mm Low-E, Argon Filled Double Glazing delivers excellent thermal performance, achieving a U-Value of approximately 1.4W/m²k, making it one of the most efficient options in its class. The Optima range is perfectly suited for properties with tighter depth-of-reveal spaces and complies with modern building regulations, making it a versatile choice for period renovations and contemporary projects alike.
Technical Specifications
Timber
Accoya Sustainable Timber (Grade 1, 50 year warranty)
Double Glazing
4/12/4 Clear Tough Low-E Argon (Optional Duplex Bar/Grill)
4/12/4 Clear Float Low-E Argon (Optional Duplex Bar/Grill)
Finish
Teknos 3 Coat System
Security
'Secured By Design' Locking Heritage Fitch Fastener
'Secured By Design' Locking Restrictors
Features
50mm sash depth
153mm box section
Colour matched parting bead with integral brush seal
2 x AQ21 seals to sash perimeter
Brush seals to meeting rails
External glazing bead with security glazing tape
Removable 'TSC Easy Fit' staff beads for easy maintenance and installation.
Concealed fixings for pre-glazed fixed sashes
All sashes factory glazed
Optional decorative horns internal and external
Optional moulded meeting rail
Ovolo moulded sash sections & astragals
Narrow 22mm astragal
Narrow 48mm sash sections
Optional 40mm Mid Rail
Deep 96mm bottom rail
Fully suited furniture
Spiral Balances

Optima Range
SPIRAL BALANCES