Light Gauge Steel Villa Thermal Insulation Structure

Light Gauge Steel Villa Thermal Insulation Structure

 

1) The thermal insulation of the outer wall of the light steel villa can be filled with fiber thermal insulation materials in the wall cavity and/or laid hard board thermal insulation materials outside the wall. When the wall cavity is filled with fiber thermal insulation materials, the thermal resistance calculation should consider the influence of thermal bridge components such as columns. The width of the thermal insulation material should be equal to or slightly larger than the spacing between the columns, and the thickness should not be less than the height of the vertical column.

2) The thermal insulation of the light steel villa roof can adopt the method of spreading the thermal insulation material diagonally along the slope roof or tiling on the top ceiling. When the insulation material is laid flat on the top ceiling, the continuity and airtightness of the insulation material, vapor barrier and moisture barrier should be ensured at the top of the top wall and the connection between the wall and the roof system.

3) In order to ensure that the thermal insulation material filled in the wall cavity of the light steel villa will not collapse, the thermal insulation material should be lightweight and have good resilience, and the thickness should be the same as or slightly thicker than the thickness of the light steel column, usually glass wool felt, etc. Lightweight fibrous insulation products.

4) The main purpose of the hard board thermal insulation material laid on the outside of the light steel villa wall is to reduce the influence of the thermal bridge of the steel column to prevent condensation and condensation on or inside the light steel villa building wall. Since the heat transfer capacity of cold-formed thin-walled steel columns of light steel villas is much larger than that of the cavity insulation material between the columns, the thermal bridge effect will have a great influence on the heat transfer of the building envelope. Calculate the thermal resistance of the external wall When considering the performance reduction of insulation materials, refer to the American ASHRAE90.1-2001 standard. Table 1 is the correction coefficient of the thermal resistance of common cavity insulation materials.

5) The thermal resistance value correction coefficient table of the external wall cavity insulation material of light steel villa

6) In order to reduce the thermal bridge effect of the light steel villa columns and prevent condensation inside the walls and black shadows of the columns on the wall, it is advisable to continuously lay hard board-like thermal insulation materials on the outside of the light steel columns of the outer wall, such as extruded polystyrene foam. Board etc. For residential buildings in severe cold areas, it is advisable to continuously lay hard board-like thermal insulation materials with thermal resistance not less than 1.40 square meters *K/W on the outside of the light steel columns on the outer walls; for residential buildings in cold areas, they should be outside the light steel columns on the outer walls. Continuously lay hard board-like thermal insulation materials with a thermal resistance value of not less than 0.60 square meters *K/W; for public buildings in severe cold and cold areas, it is advisable to continuously lay the thermal resistance not less than 0.50 square meters *K/ on the outer side of the light steel column on the outer wall Hard plate-shaped thermal insulation material of W.

6) The roof insulation materials of cold-formed thin-walled steel buildings (light-steel villas) generally have two methods: tiled on the suspended ceiling and inclined with the sloped roof. Thermal insulation materials (generally fiber insulation materials such as glass wool) are laid flat on the suspended ceiling to save thermal insulation materials, and there are ventilated and thermal insulation spaces on them, which can improve the thermal insulation performance of the roof. Taking into account the low heat storage performance of cold-formed thin-walled steel roofs of light steel villas, when the insulation materials are laid obliquely along the roof, the thermal resistance of the insulation materials should be increased according to the standard requirements to meet the roof insulation performance of the national thermal standards Requirements. In the structural design, the continuity of the roof insulation material and the wall insulation material should be ensured to prevent heat transfer loss and condensation caused by the discontinuity of the insulation material.

7) In order to reduce the thermal bridge effect of the roof steel components of light steel villas, prevent condensation inside the roof and the appearance of black shadows on the interior side of the roof, the thickness of the fiber roof insulation material flat above the top suspended ceiling should not be less than the section height of the roof steel components. 200mm; Insulation materials laid obliquely along the sloping roof, in cold and severe cold areas, it is advisable to add continuous hard board-like insulation materials to prevent condensation on the roof surface of light steel villas and dark shadows on the indoor side.

Tips: C Purlin Roll Forming Machine ; Light Gauge Steel Framing Macchine