Glass Roof Extension Building Regulations

A glass roof is essential to grow plants and will make the space a true extension of the outdoors.

Glass roof extension building regulations.

However this sleek and transparent look desired by homeowners can be at odds with building regulations part l which sets targets for the building envelope s energy efficiency. Building regulations part l1b and glass extensions there are various rules and guidelines for the use of glass in renovations and extensions as stipulated by part l1b. There are plenty of design options when it comes to your glass box extension as there are many other structural components involved in building it. The floor the roof and the walls must all be insulated correctly and the floor area of your extension dictates the area of glass that can be incorporated into your design.

Glass extensions and building regulations even when using specially formulated glass in double or triple glazed systems more heat tends to be lost through glass than through a solid construction. Modern building regulations require quite high levels of thermal efficiency and it can be difficult to get a completely glass extension to comply. Adding a tile roof costs between 3 000 and 8 000. Read below for an outline of the building regulations requirements for glazing on your new build house project.

This includes the thermal performance requirements of the glazing and considerations for design. A long length of glass or a series of rooflights ideally leading the eye towards a window at the far end of your small extension will help exaggerate not just its length but the ceiling height too. Tiled most garden rooms have glass roofs which range between 6 000 and 12 000 to install. Part l limits the total area of openings or glazed elements such as windows roof windows and doors to a maximum of 25 per cent of the extension s floor area.

Replace solid roofing with a length of glass to exaggerate the extension s size. You can also lower the price. Glass roofs frameless rooflights sliding glass doors and bifolding doors can be used to maximise the natural light into the new space. If there is a dispute regarding an extension subject to the building regulations and the local authority then determinations can be used to decide.

If the amount of glazing to the extension exceeds more than 25 of the floor area section 4 2 this is then classed as an over glazed extension. A determination is made by the secretary state for transport if you are building in england or the national assembly if you are in wales. For information about the glazing performance to an extension or renovation read our article building regulations part l1b for glazing.