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Changing your windows may not be as effortless as you think. There are a number of regulations that control putting in replacement windows that you ought to recognize. Here are some important items to get you started.

Building Rules

If you’re seeking to replace windows and doors (doors which have a 50% or more glazed area), you’re going to need building regulation certifications. There are several documents that pertain to replacement windows and doors within the UK.

Sash Windows -Document B

This document denotes emergency egress by using windows in liveable rooms. Should the second story happen to be 4.5 meters or greater above ground level, no exit is required. If the previous window has a lower sash that opens, the replacement window also has to open in a similar manner.

Document C

This document involves the prerequisite for the humidity resistance of joints connecting walls and windows. Products including sealants and expanding foam are usually used to produce moisture proof joints.

Document F

This document contains requirements for proper ventilation that is needed to avert mould growth and condensation, including trickle vents, vent stops and wall vents. Trickle vents are not suggested for historic buildings as a result of their uninviting appearance. Vent stops can be utilized to hold a window open whilst not risking safety or security. Wall vents are typically used anywhere that gas appliances are in use.

Sash Windows -Document L

This document talks about the national government’s initiative to conserve energy and cut CO2 emissions. Those replacement windows and doors with higher than a 50% glazed area are required to conform to a “U” value of 2.0 watts per square meter per degree Kelvin. U value calculates the rate of the escape of heat through a building by going through the roof, external walls and ground floor. The lower the U value, the less heat that escapes from a building. When discussing houses, the minimum U value is .35 for exposed walls and floors and is .25 for roofs.

Document N

This document denotes that safety glass must be used in crucial areas. Safety glass is a material, that may break but would does not create sharp pieces. Rather it breaks into lesser particles that are much less dangerous.

Other Factors

Replacement windows are commonly required to achieve the specified U value by utilizing double glazed panes. The gap separating the panes is plugged with argon gas. As an alternative, low-E glass like what is available from Pilkington is yet another solution. Low-E glass helps to lower the quantity of energy a home uses, is within the Energy Saving Recommended scheme and is more successful than single or standard double glazed windows. It’s also imperative to acquire replacement windows that are endorsed by the Energy Saving Trust. It’s a wise idea to seek advice from a conservation officer in cases of replacement windows for a listed building or for a building in a conservation area or national park.

When looking for replacement sash windows for your home in the UK, for the best value, be certain that the windows match all national and local laws and conditions.

Technorati Tags: sash window repair, sash windows, sliding sash windows

Tags: sash window repair, sash windows, sliding sash windows

This entry was posted on Saturday, January 30th, 2010 at 4:28 am and is filed under Window Blinds. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.