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How to install ASA resin roof tiles

1. Overview

ASA resin roof tiles are designed for fast installation - wide sheets, light handling and a complete accessory system - but fast does not mean careless. Four details decide whether the finished roof performs for its full design life: purlin spacing, laying direction, lap width and fixing method. This guide sets out the complete sequence used for the Stan tile, from purlin selection to the final ridge check, with the exact figures our installers and agents work to. If you only remember three numbers, remember 660mm, one wave, and 2mm oversize.

2. Standard and Specification

The installation specification is built around the sheet dimensions: 1050mm total width, 960mm effective width, 160mm wave pitch, 30mm wave height, 219mm step pitch, 2.5mm standard thickness or 3.0mm on request, length cut to order in step multiples. Purlin options are square tube 60 x 40 x 3mm, C-channel steel 100 x 50 x 20 x 3mm, or anti-corrosion wood 60 x 40mm, all set at 660mm spacing - the span at which the 150kg load test was performed. Recommended fixings are 6.3mm self-tapping screws, always into pre-drilled holes.

3. Structure and Construction

Work in this order. First, set and level the purlins at 660mm centres across the whole roof. Second, lay main tiles from bottom to top, against the prevailing local wind direction, so laps face away from wind-driven rain, and advance both slopes at the same time so the two sides meet evenly at the ridge. Third, overlap every side joint by one full wave. Fourth, fit the main ridge tile after cutting its first section, then tilted ridges and junction pieces, sawing every ridge joint flush so pieces sit tight.

4. Performance and Test Data

Installation rules exist because the test data assumes them. The 150kg no-cracking load result is measured at a 660mm support span; widen the purlin spacing and that result no longer applies. The waterproofing case - dense non-absorbent resin plus a 960mm effective width with 45 percent fewer joints than traditional tiles - depends on the one-wave lap being maintained at every joint. The impact result, a 1kg steel ball from 3m without cracking, assumes an undamaged sheet; a sheet cracked by an undrilled screw starts its service life already compromised.

5. Buyer FAQ

Why must holes be pre-drilled? The hole must be 2mm larger than the shank so the sheet can expand and contract with temperature without stress around the fixing. Can I fix through the sheet directly? No - that is the most common cause of cracked tiles. Which slope first? Neither: lay both slopes together, bottom up, against the wind. Full rules are also summarised on the installation page for site use.

6. Factory Capability

Good installation starts at the factory: sheets cut to the ordered length module arrive ready to lay, with no site trimming of the stepped profile. Hengyang Stan Trading Development Co., Ltd produces them on 13 automatic co-extrusion lines in a 20,000 sqm Hunan base, 15 million sqm a year, with online thickness measurement and batch inspection of thickness, colour and strength. For agents and project buyers, technical support includes roof layout, accessory count lists and installation training, so the crew on site works from the same figures as this guide. CE and SGS third-party testing available on request.

7. Conclusion

Set purlins at 660mm, lay bottom-up against the wind with one-wave laps on both slopes together, pre-drill every hole 2mm oversize, fix with 6.3mm self-tapping screws, and finish ridges with the first main ridge section cut and all ridge joints sawn flush. Follow those five points and the installed roof matches the tested roof. Download the summary from the installation page, check the parts list on the accessories page, and contact us via trade and contact for layout support on your project.

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