ASA Spanish Roof Sheet has good waterproof performance, is dense and does not absorb water. Under normal circumstances, there is no need to lay a waterproof layer. The waterproof technical level of ASA Spanish roof sheet can also meet the waterproof design requirements of class III roofing engineering. If it is used together with waterproof membrane, it can meet the requirements of the second-level roof waterproof quality rating system, so there are many heavy spots of rain and the areas with heavy rainfall all year round like to purchase ASA Synthetic Resin Roof Sheet together with the waterproof layer. Then how to make a waterproof layer for the Synthetic Resin Roof Sheet rooftop?

The roofs of some permanent buildings such as villas generally require secondary waterproofing, which requires adding a waterproof layer under the ASA Synthetic Resin Roof Sheet. The secondary waterproofing method of ASA Synthetic Resin Roof Sheet roof is: structural roof + cement mortar leveling layer + waterproof layer + insulation layer + leveling layer or protective layer + hanging tile.

 
When using a wood base layer, a layer of coils are laid on the base layer with a lap width of 10cm. The coils and water lines are nailed to the wood base layer together with a water line spacing of 500mm. The waterproof layer of the drainage ditch and gutter should be made of 1.2mm thick synthetic polymer or 3mm thick polymer modified bitumen waterproofing membrane.

Precautions:
-1. The leveling layer of the waterproof layer of the coiled material should meet the quality requirements and reach the specified dryness (the inspection method for the degree of dryness is to lay a 1 square meter coil on the leveling layer, let it stand for 3-4 hours, and then lift it for inspection The coil can be laid on the leveling layer and the area covered by the coil without watermark).
-2. At different parts of important nodes such as roof corners, gutters, downfalls, roof ridges, coiled material overlaps, heads, etc., carefully study the paving and tightness, compaction, and heads that are securely closed to meet the requirements of teaching design and improve the waterproofing of the roof. System engineering information technology management regulations and other relevant laws stipulate that additional layers of coiled materials shall be laid on roof corners, gutters, water downs, roof ridges and other places.
-3.The coil workshop should avoid excessive tension and wrinkles, the exhaust between the base layer and the coil should be sufficient, and the exhaust rollers on both sides should be flat and firm after use.

 
-4. The overlap width and paving of the coiled material should be straight, and the construction should be strictly in accordance with the marking line of the base layer.
-5. Protect the entire waterproof layer when laying the material insulation layer.

  
In addition, special attention needs to be paid to waterproof materials, which must meet the requirements; secondly, the construction technology, the base layer must be treated, the joints must be treated, and the detailed structure must be treated well; after the completion, a water storage test must be carried out to check whether there is water seepage.
For more detail about installing ASA Spanish roof sheet, welcome to contact XROOF.

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