New thinking on house insulation and roof waterproof in cold regions
The New Thinking of House Insulation and Roof Waterproofing in Cold Area" WANG Ya-lun1, SHA Li-jun2, XU Fu-gui3 (1. Heilongjiang Provincial Building Materials Industry Planning & Design Institute, 1500802 Heilongjiang Provincial Architectural Design Institute; 3. Mudanjiang Institute of Architecture (II) The actual situation of the new and old structure of different practices, put forward the three blankets four oil waterproof perlite insulation in the old transformation of the conditions, and analyzed the shortcomings of this old method, and suggested the use of benzene board insulation.Galvanized iron sheet waterproof cold District roof insulation waterproof new practices.
〔〕 Insulation in cold areas perlite benzene plate galvanized iron sheet For many years, the old practice of using the former Soviet Union to maintain the thickness of the wall of the former wall of the Soviet Union thick wall roof, three felt four oil waterproof, perlite insulation has been gradually replaced by new energy-saving roof, This article analyzes the shortcomings of the old practice after analyzing the shortcomings of the old practice. 1 The old practice of roofing is almost the same as the flat roof in the northeastern region. The parapets, three felts, four oils, and perlite are used for insulation. Almost two or three years maintenance. Take the example of 6-storey roof with 80m long and 12m wide, which was demolished in 1987. The original design is based on the standard drawing, three felts and four oils waterproofing, and 7 layers of 15cm thick perlite insulation is practiced. The split section is marked as 1 original. Layer 3 cement mortar protective layer, the actual thinnest 8cm, the thickest 15cm was wavy flat thin flat thick. The original drawings marked 15cm perlite insulation, the thinnest at 2cm, the thickest at 8cm, also showed wave-like ups and downs, and a large amount of water after the maintenance layer split 1.2 calibration: repair 5 times, layer by layer of linoleum , Space cement mortar, total thickness up to 10cm 2 4 weeks around the bottom of the wall of the daughter, the original floor of the building, the first floor of the tenant, the cross wall of the first floor, and the first wall of the outer wall, the distance of 1cm. The second and the third roof panel seams are gradually smaller. The moldy roof.
The reasons for these shortcomings are summarized as follows: the plaster layer with a thick (up to 12cm) roofing layer (approximately 12cm in average) and a thickness of nearly 1000m2 forms a shell with no expansion joints. In summer, the thermal expansion stress infers the parapet and pushes away the roof slab. This gap between the shell plates has shrunk.
Insulation perlite construction quality factors The original insulation perlite in order to have the strength of the wet practice, namely: 1 10 cement perlite directly on the roof but in fact the operator step on the car pressure, the process can not be adjusted, then fill with the furnace Flat, fill, the next step and then step on, and then pressure, and finally filled with cement mortar protective layer. The entire roof is water-bearing, and it heaves in winter, destroying the plastering surface and the waterproof layer, making it leaky.
Another kind of dry method: the use of Zhejiang green perlite blocks finally failed for the same reasons as the cement perlite effect.
Another way to spread perlite is even worse.
3 Several Effective Practices 1 Street-fronted houses: Promenades are required to decorate or decorate their daughters' walls. When using the roof, two 5-cm thick benzene boards can be used to make a staggered seam. High-strength, non-absorbent, each paving can be used during construction. A benzene plate, the upper layer of the furnace to find the slope back to avoid construction interference and damage, to achieve quality requirements This method should be the best way to flat roof insulation waterproof material to switch to new materials will fully guarantee the quality of the roof 3.2 back Houses on street houses can be considered as sloped roofs and tin roofs.
The standard design life cycle in our country is 50 years. According to experience, galvanized iron sheet can meet this requirement. If the roof is not seen from a distance, it can be considered as an imitation European-style roof with arc-shaped polygons. Each unit is equipped with a roofing tiger window. The entire roof becomes a landscape. This type of roof uses an organized gutter drain.
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