when did cavity wall insulation become part of building regulations
1990s
title: Cavity wall text: the two leaves of the cavity wall together, while in the 20th century metal ties came into use. Initially cavity widths were extremely narrow and were primarily implemented to prevent the passage of moisture into the interior of the building. The widespread introduction of insulation into the cavity began in the 1970s with it becoming compulsory in building regulations during the 1990s. A cavity wall is composed of two masonry walls separated by a continuous air space in between the outer and the inner wall. The outer wall is the brick wall that faces the outside of the building structure.[1] title: Cavity wall insulation text: Cavity wall insulation Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with material that inhibits heat transfer. This immobilises the air within the cavity (air is still the actual insulator), preventing convection, and can substantially reduce space heating costs. During construction of new buildings, cavities are often filled with glass fiber wool or rock wool panels placed between the two leaves (sides) of the wall, but many other building insulation materials offer various advantages and many others are also widely used. For existing buildings that were not built with insulated title: Cavity wall insulation text: cavities, a fibrous material such as cellulose insulation or glass wool is blown into the cavity through suitably drilled holes until it fills the entire wall space. Foam can also be used for this purpose. Although some foams used in the past, such as urea-formaldehyde, are no longer used (some people are allergic to this material, which is very difficult to remove once inside the wall), others, such as polyurethane, have taken their place. Cavity wall insulation also helps to prevent convection and can keep a house warm by making sure that less heat is lost through walls; this can title: Noise Control Act text: "See" Noise regulation. Noise Control Act The Noise Pollution and Abatement Act of 1972 is a statute of the United States initiating a federal program of regulating noise pollution with the intent of protecting human health and minimizing annoyance of noise to the general public. The Act established mechanisms of setting emission standards for virtually every source of noise, including motor vehicles, aircraft, certain types of HVAC (heating, ventilation, and air-conditioning) equipment and major appliances. It also put local governments on notice as to their responsibilities in land-use planning to address noise mitigation. This noise regulation framework comprised a broad title: Building regulations in the United Kingdom text: comply with building regulations and as such the homes affected by the snow were not defective in any way.” Some Insulating Materials inserted into (existing) cavity walls can give off toxic fumes. Preventative measures must be taken to stop these fumes reaching occupants of the building. However now largely obsolete as injected materials are now mostly blown chopped fiber and not mixed on-site "chemical reaction" based methods. See Part C for controls on toxic hazards from "ground contaminants" and/or "brownfield" development. Approved Document E 2003 plus amendments 2004 should be read in conjunction with supplemental document 'Robust Details Part E