Warm Lead Roof Construction

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Warm lead roof construction.

Others would treat even steeper pitches as flat roofs. The membrane is then attached to the insulation. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.

Be it a cold or warm roof construction the primary function of a vcl is to keep warm moist air from inside the building inside the building. Correctly laid lead roof greyfriars roofing note the height of steps between bays the rolled joints and adequate overlaps problems. More about lead as a building material. It s the first line of defence against high vapour pressure air entering the roof structure and causing interstitial condensation.

Inclined along the line of rafters warm roof or positioned within the roof structure to form an insulated void room in roof which can result in warm and cold roof areas. Put simply a warm flat roof has insulation of some kind packed into every available void and a cold flat roof allows air to circulate. In pitched roof construction thermal insulation can be placed horizontally at ceiling level cold roof. Lead is commonly used for flat roofs because of it s long life and ability to be formed to fit many positions lead must be laid and formed correctly to achieve this long life however.

Flat roof construction can come in the form of a warm roof or cold roof depending on the requirement of the owner and architect as they relate to the building regulations regarding heat loss and insulation. Warm leads is your introduction to just about any kind of construction lead that you may be looking for including but not limited to. Where a warm roof is used a ventilation void should be provided between the insulation and the timber decking supporting the lead if there is sufficient height available. This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up.

The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. It is usually the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. For guidance on the amount of ventilation required reference should be made to british standards 5250 and 6229. It should also be noted that a warm roof adds height to a flat roof and so cannot be used on balconies and extensions with doors that lead onto the roof.