Abstract
The article outlines the basic requirements for pitched roof insulation systems. The analysis of the properties of thermal insulation materials used in insulation systems was conducted. It is substantiated that the thermal resistance of such structures on the surface of the roof is formed taking into account the thermal conductivity of thermal insulation, thermal conductivity of wooden rafters and heat loss through the leakiness of joints and mounting devices. An assessment was made of the effect of loads of various types on the heat-insulating layer, namely: the effect of the air flow in the ventilated gap; the movement of the vapor-air mixture in the material; condensation of water vapor and penetration of drip liquid; exfiltration of air at the joints of the plates and on the surfaces of contact with the supporting structures. The expediency of using products on the basis of unstitched polyethylene foam in the construction of pitched roofs with a wooden roof system, taking into account the advantages and features of this material, as well as taking into account the possibility of creating a seamless insulating shell, is substantiated.
Highlights
Tasks of roofing systems are protection of a design of a roof and a roof from penetration of moisture and other atmospheric influences, from an overheat of designs and rooms in the hot period, that is minimization of thermal losses, and, expenses on heating in the cold periods of a year
An important factor affecting the thermal resistance of the structure is the operational resistance of the thermal insulation material
Thermal resistance of insulation depends on the thermal conductivity of the insulation and formability insulation products
Summary
Tasks of roofing systems are protection of a design of a roof and a roof from penetration of moisture and other atmospheric influences, from an overheat of designs and rooms in the hot period, that is minimization of thermal losses, and, expenses on heating in the cold periods of a year. In most ways insulation is used in a constructive solution, when insulation is placed between rafters at their full height (Fig. 1a) or with partial filling on height (Fig. 1b). It is necessary to use vapor barrier on the part of the room and waterproofing and wind protection on the part of the roof covering (on the outside of the insulation facing the roof ventilated gap) [5,6,7,8,9,10,11]
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