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What is an ASA synthetic resin roof tile?

1. Overview

An ASA synthetic resin roof tile is a factory-made roofing sheet that combines a traditional tiled profile with modern polymer materials. Instead of fired clay or cast cement, the sheet is co-extruded from synthetic resins: a weather-resistant ASA skin on top and an anti-corrosion PVC body underneath. The result is a light, wide sheet that covers a roof quickly, keeps its colour for decades, and needs no painting or sealing. Importers choose it for housing, factories, warehouses and renovation work where clay is heavy, cement is porous, or thin metal rusts and drums in the rain.

2. Standard and Specification

The standard Stan specification is consistent across every guide on this site. Thickness is 2.5mm, with 3.0mm available on request. Total width is 1050mm and effective width after lapping is 960mm. The wave pitch is 160mm, wave height is 30mm and step pitch is 219mm. Length is not a fixed stock size: sheets are cut to order in multiples of the 219mm step pitch, so a buyer orders the exact slope length the roof needs. Six standard colours are stocked, including Brick Red, Maroon, Sea Blue, Deep Blue and Golden Gray.

3. Structure and Construction

Structure explains performance. The ASA surface layer is the working face of the tile: ASA is an ultra-weatherable resin that resists UV, humidity and temperature cycling, which is what keeps colour stable outdoors. The PVC base layer provides stiffness and corrosion resistance through the body of the sheet. Because the two layers are co-extruded in one pass, they leave the line as a single bonded sheet. A full accessory system - main ridge, tilted ridge, ridge ends and two-way and three-way junctions - is made in the same material so the whole roof behaves as one system.

4. Performance and Test Data

Manual test data gives buyers verifiable numbers instead of adjectives. At a 660mm support span the sheet carries a 150kg load without cracking. A 1kg steel ball dropped freely from 3m causes no cracking. After 24 hours immersed in salt, alkali or acid below 60 percent, there is no chemical reaction. Thermal conductivity is 0.325 W/m.K. The dense resin does not absorb water, the surface self-cleans with a lotus-leaf effect in rain, and the material is a flame-retardant material, V-0 grade - a material rating, not a building-code claim.

5. Buyer FAQ

Is it a plastic tile? It is a synthetic resin tile: an ASA and PVC co-extrusion engineered for roofing, very different in weathering and strength from a plain plastic sheet. Is it heavy? No - it is a lightweight sheet, which is why it suits renovation and flat-to-sloped conversion. Who makes it? Hengyang Stan Trading Development Co., Ltd, in its own factory; see the factory capability section below and the factory page for detail.

6. Factory Capability

Hengyang Stan Trading Development Co., Ltd is the manufacturer and exporter of this product, with based in Hengyang, Hunan, at its own production base covering 20,000 sqm. Thirteen fully automatic co-extrusion lines give an annual capacity of 15 million sqm. Production uses computer-controlled temperature, automatic batching and online thickness measurement, and every batch is inspected for thickness, colour and strength before release. CE and SGS third-party testing available on request. That combination - own factory, batch inspection, direct export - is what a buyer is actually purchasing beyond the sheet itself.

7. Conclusion

In one sentence: an ASA synthetic resin roof tile is a co-extruded ASA-over-PVC roofing sheet, 1050mm wide and cut to length, designed for a 30-year service life with 20 years without fading in normal outdoor use. If you are comparing roofing materials, start with the specification and test data above, then read the ASA vs UPVC comparison and request samples via trade and contact to judge the surface and colours in hand.

Related guides

• ASA vs UPVC roof tiles: what is the difference?
• How long do ASA roof tiles last?
• ASA roof tile thickness and size guide