Timber Sash

All our timber box sash windows come with fantastic guarantees giving you the assurance that our products are made to last. Every window we make is engineered using the highest quality materials and will require minimum routine maintenance.

Designed to replace the originals found in many Georgian and Victorian houses, weights & pulleys ensure the windows are easier to open, energy efficient, secure and soundproof without looking out of place for the style of the property.

As the whole process from design to manufacture is with Windows Doors London, we can ensure the finished product accurately replicates the original style.

Our box sash window operates on sash cords, pulleys and sash weight

  • Weights and Pullies – traditional design where weights counter balances the weight of the sash.
  • Independently tested
  • Guaranteed performance
  • The smoothest operating sash window system
  • Internal beading
  • Double draught sealed to maximise thermal performance and weather proofing
  • Lockable fitch catch, traditional in its appearance, when closed it pulls the two sashes together to engage the seals fully


We use high quality hardware from renowned companies: Maco and Roto. Latches with integrated handles mechanisms are made of high quality materials. Functionality and durability has been confirmed by CE certificates.


Rebate vents allow micro-ventilation providing controlled airflow. Fresh air is supplied into the space between a frame and a sash forcing temperature compensation. Warmer air rises to the top and through the specially shaped vent enters the building. At the same time used air is vented out of the building. The use of vents allows smooth room ventilation without a risk of a draft or sudden temperature differences.


High-quality EPDM (ethylene-propylene-diene) is weather-resistant offering effective protection against ozone, water and high temperatures (up to +110 ° C). It also retains elasticity at low temperatures (down to -40 ° C). Sealing units are available in gray and black colour.


Georgian bars are a decorative element that gives windows a unique and elegant look. They perfectly complement classic or rustic style windows. However architects increasingly choose georgian bars while designing facades of modern buildings. We offer a wide range of georgian bars that allow windows to be individually divided into designed quarters. Glued over or mounted inside the glazing unit


Botanical name: Pinus sylvestris, family PINACEAE
Distribution: Europe (up to Asia Minor and northwestern Siberia)
Other important trade names: Kiefer, Föhre, Nordische Kiefer, Scots pine, redwood (GB), pin commun (FR); pino silvestre (IT, SP)
The abbreviation in accordance with DIN EN 13556: PNSY


Botanical name: Shorea spp., Section Rubroshorea, family Dipterocarpaceae
Distribution: Thailand, Laos, Vietnam, Cambodia, Indo-Malaysia
Other important trade names: Dark red meranti, Seraya, lauan (D), kawang, Seraya, bunga, Red Seraya, obar suluk (MAL.SAB.)
The abbreviation in accordance with DIN EN 13556: SHDR 


Botanical name:  Quercus (in) spp., family FAGACEAE
Distribution:  Europe, around the Mediterranean, moderate parts of Asia, North America
Other important trade names: European oak (GB), European white oak (USA), Stieleiche, Sommereiche, Traubeneiche, Wintereiche, Spessarteiche (D)
The abbreviation in accordance with DIN EN 13556: QCXE = Q. petrea, Q. robur; QCXA = Q. alba and other white oaks from North America

Paint Options

Using only a water-based painting system which allows timber to “breathe” and adapt to climatic changes, our finishes provide maximum protection against weathering, fungal attack and UV degradation. The water-based application significantly reduces harmful emissions and disposal issues associated with solvent based systems.

We can finish our windows in any RAL colour, stain, or match against all well known paint ranges and brands. With the ability to have different internal and external finishes, your windows and doors can be finished just as you require.

Our factory is audited quarterly to ensure that the finished product has the highest quality paint finish and performance you would expect.


Glass Options

Nobody takes glazing more seriously than Windows Doors London. That’s why we offer multiple high-performance glass options that will suit … Client


Low Emission Glass

Thermal protection is the basic task of glazing units designed for windows. Thanks to our partnership with suppliers, resulting in development of new glass coats, PRESS GLASS is able to offer glass panes with even lower heat transfer coefficient Ug= 0,4 W/m2K. This value is close to the value of heat transfer coefficient of walls. Cold feet near the window are in the past.


Warm Edges Glazed Units

It should be emphasised that the actual effect of a thermal bridge on the edges of glass units mounted in windows depends on the type of spacer bar, heat insulation of the central part of the glass unit and the depth of the pane seating in profile and the coefficient of heat penetration Uf of profile. Together with the increase in seating depth of the pane the proportion of heat loss of windows through the edge is reduced and minimises the possibility of the occurrence of water vapour.

Safety glass protects against injury at breakage, making it less possible to break the glass when lamming a door or window.
Types of safety glass:

  • tempered,
  • laminated,
  • wire mesh reinforced patterned,
  • wire mesh reinforced polished


Solar Control Glass

It offers quality and beauty, helps save energy, and allows for easy assembly. Among its various qualities, there is one which is especially useful for offices and public facilities, namely solar protection. Solar control glass adds character to a building and reduces undesirable heating of the elevation regarding a type of coating.


Acoustic Glazed Units

Our subjective perception of noise is subject to the following principle: if the level of noise in a room is reduced by 10 decibels with relation to that outside, we get the impression that it is reduced by half. Noise protection must be applied everywhere where noise cannot be completely eliminated. In such applications we are faced with acoustic double glazed units.


Fire Resistant Glass

We offer a wide range of fire-resistant glass options with varying levels of protection to suit your needs. Protection levels are measured in defined time periods (30, 60, 90, 120 and 180 minutes) and in terms of either integrity and insulation or integrity only, as designated by the European Standards.


Ornamental Glass

In multiple design solutions it is required that glass panes are perfectly transparent and ensure intimacy at the same time. Right selection of ornamental structure of glass can enhance or aggravate transparency and image deformation properties. Windows Doors London offers tens of types of ornamental glass.

Windows Doors London Limited

02 08226 4820


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