Mr Quyen - Santiago. Posted 03/11/2026
Santiago makes ASA/PVC roofing sheets by co-extrusion. Virgin PVC and ASA are melted and pushed through one die at the same time, forming a single sheet with four layers and no glue. While still hot, the sheet runs through a forming die for the tile, 5, 6 or 11-wave profile. It is then cooled, cut to the length on the order and packed with quality papers for each lot.
Blue ASA/PVC roof tile sheets coming off the forming line at the Santiago factory
What is a PVC roofing sheet made of?
| Layer | Material | Job |
|---|---|---|
| 1. Surface | ASA | Blocks UV, holds the colour, takes sun and rain |
| 2. Protective layer | Virgin PVC | Takes impact and chemicals, slows heat transfer |
| 3. Core | PVC; a dark layer in corrugated sheets, a reinforcing layer in roof tiles | Keeps the sheet stiff, stops light passing through, damps sound |
| 4. Base | Milky-white PVC | Resists moisture from below |
Santiago uses virgin PVC for the body of the sheet, not recycled plastic, and ASA only on the face that sees the sun.
What are the production steps?
- Raw materials: virgin PVC for the body layers, ASA for the surface, colour mixed for the order.
- Co-extrusion: all four layers leave the die together as one sheet, with no adhesive between them.
- Forming: the hot sheet passes through a die that shapes the roof tile steps or the 5, 6 or 11 square waves.
- Cooling and cutting: the sheet is cooled and cut to the lengths on the order; roof tiles are cut in whole 219 mm steps.
- Accessories: ridge, hip and edge pieces, and pre-bent ridge covers, are formed to size.
- Packing: bundles are strapped and labelled, and each lot leaves with a quality certificate (CQ) and certificate of origin.
A dark grey ASA/PVC tile sheet leaving the production line
How is quality checked?
- The factory works under an ISO 9001:2015 quality management system (certificate ICI-23087.D).
- Samples are tested at Quatest, Vietnam's standards and quality testing centres, for burning, soaking in hydrochloric acid, tension and compression.
- The ASA layer went through 2,000 hours of artificial UV with no colour change, and the sheet's bending strength is above 1,000 N.
- Every lot carries a CQ, and export lots also carry a certificate of origin.
Finished green and blue ASA/PVC sheets laid side by side at the factory
Where are Santiago sheets made?
Santiago makes its ASA/PVC sheets and roof tiles at two factories in Vietnam. Importers can ask to visit by appointment; buyers who cannot travel start with free samples (courier paid) and check the cut edge, the thickness and the colour themselves. For export, production and loading take about 5 days after an order is confirmed.
Ridge pieces in orange and dark grey laid out on the factory floor
What does a PVC roofing sheet factory look like inside?
Mr Quyen walks through the Santiago factory in Vietnam and explains it in English: roof tiles and ridge pieces in the yard, a green 5-wave sheet coming off the line, a delivery truck, and the warehouses where a container is being loaded.
Inside the Santiago ASA/PVC roofing factory in Vietnam (Santiago video on YouTube).
More short videos: from the line to the warehouse
Three short clips in English, filmed by Santiago. Tap a video to play it here on the page.
What does a finished sheet look like after it leaves the line?
A short factory clip: a white tile sheet takes a worker's weight on the floor, a torch is aimed at red and blue sheets, and the Santiago team lines up in front of a container.
Santiago tile sheets at the factory (Santiago video on YouTube).
Which ridge pieces are made alongside the sheets?
A 19-second short from the Santiago warehouse: red ridge caps and fittings on pallets, then stacks of red tile sheets ready for export and OEM orders.
Red ridge caps and tile sheets in the Santiago warehouse (Santiago video on YouTube).
What does the extrusion line look like while a sheet is made?
A 14-second clip from the Santiago factory: a long white corrugated ASA/PVC sheet moves along the extrusion line.
A Santiago ASA/PVC sheet on the extrusion line (Santiago video on YouTube).
Santiago – a leading exporter of ASA/PVC roofing from Vietnam
Santiago roofing is produced and loaded into containers at our factory in Vietnam. It has been exported to India since 2023, Thailand since 2024 and the USA since 2025. Every export shipment comes with a commercial invoice, packing list, bill of lading and a certificate of origin (C/O) issued by Vietnam's Ministry of Industry and Trade, which importers use to claim the duty preference of their trade agreement.
| Item | Details |
|---|---|
| HS code | 3925.90.00 (ASA/PVC roofing sheets) |
| Certificate of origin | Form D (ASEAN), Form AI (India), Form AK / VK (Korea), Form AJ / VJ (Japan), Form VC (Chile), CPTPP proof of origin |
| Shipped from | Vietnam, by container |
Certificate of origin Form AI (ASEAN–India) for Santiago ASA/PVC roofing sheets, HS 39259000, certified on 24 September 2026. Buyer details are hidden.
The Santiago team beside a loaded export container at the factory, November 2024
Loading Santiago roof tiles into an export container
Frequently asked questions
How are PVC roofing sheets made?
By co-extrusion: Santiago melts virgin PVC and ASA and pushes them through one die at once, forming a four-layer sheet that is shaped, cooled and cut to length.
Are Santiago PVC sheets made from recycled plastic?
No. Santiago uses virgin PVC for the body layers and ASA for the surface.
Is there glue between the layers?
No. The four layers are extruded together into one solid sheet.
What quality certificates does Santiago have?
ISO 9001:2015 (certificate ICI-23087.D), Quatest test results and a quality certificate (CQ) with every lot.
Read more
- How Santiago loads an export container
- Why the ASA surface layer matters on a PVC roof
- Quotes, samples and OEM orders from Santiago
- About Santiago
Sources for the figures in this article
- Profiles, 2.5–3.0 mm thickness and 10-year warranty: Santiago ASA/PVC product specification.
- HS code 3925.90.00: Harmonized System Chapter 39 (builders' ware of plastics), as applied in Vietnam's export tariff.
- Certificates of origin (Form D, AI, AK/VK, AJ/VJ, VC, CPTPP): issued by Vietnam's Ministry of Industry and Trade under the country's free trade agreements.
- Minimum order of one 40 ft container (about 5,000 m) and about 5 days for production and loading: Santiago export desk, October 2026.
Updated 03/11/2026. Santiago Import Export Co., Ltd, Vietnam. WhatsApp +84 935 391 495 (Mr. Quyen), hotline +84 965 437 316 (Mrs. Ly), email salessantiagoroofing@gmail.com.
