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.
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