Windows can be an important source of natural energy, letting in both light and heat from the sun. At the same time, they can let energy out of the buidling if they are not draught-proof and insulated.

 Often, old buildings have beautiful feature windows. These will be retained and adapted to modern standards of insulation. They may be used for ventilation, with trickle vents or controlled openings. Ventillation is important for health and for the fabric of the building.

Buildings may also overheat if too much solar energy enters through windows. This is best prevented using movable shading, blinds or coatings on the glass. Shutters are a traditional way of preventing overheating and also insulating windows at night or in winter.

 We will not fit uPVC windows, but will use timber windows made from wood from sustainable sources. Windows will be insulated and draught-proof. They will be double- or triple-glazed if possible Double-glazed windows will have an insulating inner pane (such as Pilkington K-glass). Argon-filled cavities between panes increases the thermal insulating properties of the window - argon-filled double-glazing is as effective as air-filled triple-glazing.