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彩钢板防水施工方案的优缺点

返回列表 来源: 发布日期: 2019.08.14

彩钢板防水施工方案的优缺点

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1:国外流行的施工方法

防水层结构:自粘层+聚酯无纺布+防晒涂层
施工方法:将自粘层直接粘贴在彩板上,然后涂高档防晒漆+聚酯无纺布+两种高档防晒漆。
防水原理:用自粘层将原色板上所有裂缝、钉子和孔洞密封。无纺布能抵抗色板的剪切力和膨胀力。防晒涂料既能抵抗太阳紫外线,又对防水层起到保护作用。
优点:防水层作为一个整体,油漆层可以改变成各种颜色,以达到与原有住宅屋顶相同的颜色。使用寿命长。
缺点:施工时间长,工程造价高。
2:国内设计院普遍采用的施工方法
防水层结构:PE膜+PVC防水膜
施工方法:将聚乙烯薄膜作为防潮层放置在彩板上,铺设保温板,用自攻钉固定PVC防水膜,用焊机焊接边缘接缝。
PVC防水膜无缝覆盖整个屋顶。
优点:屋顶防水层成为一个整体。
缺点:防水层采用自攻钉固定,宽度大于2米。整个屋顶的防水层是空的。防水层一旦损坏一点,平时就要通风,屋顶的整个防水层都会被彻底破坏。施工要求高,难度大。
4:常用的传统施工方法
防水层结构:聚酯非织造布+防晒涂料
施工方法:油漆施工时,先铺上聚酯无纺布,再刷上防晒漆,定型后再刷防晒漆。
防水原理:涂料直接封闭在彩板屋顶上,聚酯无纺布起到张力作用,防水层表面成为一个整体。
优点:成本低,施工方便。
缺点:
首先,由于市场上生产屋面专用防水涂料的厂家很少,施工单位大多采用普通防水涂料。因此,防水层很快失去防水功能。

其次,市场上没有聚酯无纺布,施工单位只能用普通无纺布代替,普通无纺布基本上没有抗拉力,只是填充。

1: Foreign popular construction methods
Waterproof layer structure: self-adhesive layer + polyester non-woven fabric + sunscreen coating layer
Construction method: Self-adhesive layer is directly pasted on the color board, and then painted with high-grade sunscreen paint + polyester non-woven fabric + two high-grade sunscreen paint.
Waterproof principle: self-adhesive layer to seal all cracks, nails and holes in the original color board. Non-woven fabrics can resist shear force and swelling force from color board. Sunscreen coating can resist the sun's ultraviolet rays, but also plays a protective role on the waterproof layer.
Advantages: Waterproof layer as a whole, paint layer can be changed into a variety of colors, to achieve the same color with the original residential roof. Long service life.
Disadvantage: The construction time is long and the cost of the project is high.

2: Popular Construction Method in Domestic Design Institutes
Waterproof layer structure: Pe film + Pvc waterproof membrane
Construction method: Place PE film on the color board as moisture-proof layer, lay insulation board, fix the PVC waterproof membrane by tapping nails, and weld the edge seam with welding machine.
Waterproof principle: PVC waterproof membrane covers the whole roof seamlessly.
Advantages: The roof waterproof layer becomes a whole
Disadvantage: The waterproof layer is fixed by self-tapping nails, and its width is more than two meters. The waterproof layer of the whole roof is empty. Once the waterproof layer is damaged a little, it will be ventilated in peacetime, and the whole waterproof layer of the roof will be completely destroyed. The construction is demanding and difficult.
Suggestion: Use our company's three-in-one product (self-adhesive polymer Eva) instead
4: Common traditional construction methods
Waterproof Layer Structure: Polyester Nonwoven + Sunscreen Coatings
Construction method: When painting paint, lay polyester non-woven fabric, then brush sunscreen paint on it, and then brush sunscreen paint after shaping.
Waterproof Principle: Coatings directly enclosed the color board roof, polyester non-woven fabric plays the role of tension, the surface of waterproof layer becomes a whole.
Advantages: Low cost, convenient construction.
Disadvantages:
Firstly, because there are few manufacturers producing special waterproof coatings for roofing in the market, the construction units mostly use ordinary waterproof coatings instead. As a result, the waterproof layer loses its waterproof function very quickly.
Secondly, there is no polyester non-woven fabric on the market, so construction units can only use ordinary non-woven fabric instead, and ordinary non-woven fabric basically has no pull resistance, just filling 


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