On a warm deck I would use 105mm plus 100 quilt between rafters with 50mm air gap. A warm roof, on the other hand, has insulation added above the joists, with a waterproofing layer added on top. There are no products in your shopping cart. For roof decking which may need replacing if not in a satisfactory condition, we would install a suitable material like plywood to provide a strong platform for the warm roof. The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing. In pitched roof construction thermal insulation can be placed horizontally at ceiling level (cold roof); 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. The Warm Roof conservatory roof conversion system is an ideal solution to consider when replacing your conservatory roof with a solid roof. Lecture 2.3. Ventilation is required for these roofs. If you have been considering a new roof installation, looking into adding insulation to your home, or are planning to build a new house, you may have heard people talk about “hot roof” and “cold roof” systems. 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. If the temperature dips below freezing, frost, ice and snow become a serious safety factor on the roof. Insulating a pitched roof above the rafters is the common method chosen for new builds and re-roofing existing detached buildings as it provides superior thermal performance for the building. Just like working under the hot sun, working in the cold takes a lot of physical exertion, so workers should also remember continue to drink plenty of fluids to prevent the risk of dehydration. THE TRADITIONAL METHOD of constructing a low-slope, membrane roof is to install insulation between the rafters, leaving an air space between the insulation and the roof deck above (see Figure 1). Converting from a cold roof to a warm roof . Rigid type insulation just above the ceiling, 3-4” gap and then plywood decking on top. There are two types of flat roof; cold roofs and warm roofs. A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold … Section 3 0/4. Instead, the attic has insulation on the floor that separates air between the conditioned and attic spaces. A final view of the cracked and pooling roof before the new system goes on, The system forms perfectly even around quite unusual details (note stepping), All chimney stacks and vents are seamlessly protected, And the tapering of the roof ensures good surface run off. The membrane is then attached to the insulation. It is obvious that this cold roof space should be decoupled from the internal, conditioned building space. In cold climates, roofs can accumulate moisture through condensation, and it is possible that cool roofs might be more susceptible to accumulating moisture than dark roofs of the same design. We work ALL over the UK (including the Highlands and Islands), work quickly and professionally, aiming to minimise hassle and mess for you and to give you a great, high spec roof fast. Flat Roof Insulation Some areas, including the easily exposed joist areas, required cold bridging with insulation in order to prevent through draft once the roof's conversion was complete. Warm roofs and cold roofs can take different forms depending on the nature of the roof form. A warm roof has many benefits over a cold roof installation. feedback. This roof construction, called a cold roof, does have some disadvantages: Ventilation of the ceiling space is required as there is a risk of condensation forming on the underside of the roof … Alternatively simply follow the links in the left and top navigation bars to learn more about the polymer system and its versatility. What I need to know if i wished to change my polycarbonate conservatory roof to a tiled roof. Some ice melt chemicals damage roofing materials, so be sure to use ice removal products that are designed for roofs. All our conservatory warm roofs are perfectly designed to turn these rooms from a cold one in winter and sweltering hot one in summer into liveable rooms. On a warm deck I would use 105mm plus 100 quilt between rafters with 50mm air gap. Void is ventilated. I am looking to find out what planning I would need to investigate should I wish to go down the route of changing my polycarbonate... © 2008-2020 MyBuilder Limited Hi I have a flat roof that is a cold roof. Thanks, Acton • Member since 5 May 2011 • The structural deck and the supporting structure are at … This video will demonstrate how to install a Cure It GRP Waterproofing System in a warm roof build up. Roof workers should also wear layers of warm clothing that is breathable but provides ample coverage, hides exposed skin, and insulates against wind. I want to convert to warm roof by removing existing roof covering to ply deck, fitting vapour barrier, insulation and then new felt system. This was however a trickier than usual job as the existing roof needed to remain entirely in situ and there was a very large area requiring insulation. A cold roof implies that the attic is not within the conditioned space of the home. Namely the insulation layers. 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