Mr Quyen - Santiago. Posted 03/11/2026
A container house or 농막 (farm hut) stops collecting rain on its flat steel top once a pitched roof of Santiago ASA/PVC tile sheet is built over it on a light steel frame. In Santiago's tests the space under the tile sheet stays 6 – 8 °C cooler than under bare metal sheet, and rain noise is about 80% lower. A 20 ft container with a gable roof takes 14 sheets of 1.752 m, about 24.5 m in total.
Aerial view of a red tile-sheet roof with flat roof sections beside it, Vietnam
A shipping container makes a fast site office, a weekend room or a 농막 on a farm plot. Its weak point is the top. This guide is for owners and builders in Korea who want to put a sloped roof with a tile look over a container, a farm hut or a flat-roof annex, and need the frame rules and the order quantities before they ask for a quotation.
Why does a container roof leak, heat up and drum in the rain?
The top of a standard container is thin corrugated steel laid almost flat. Rain does not run off quickly. It sits in the dents left by lifting gear and in the corners, and that is where rust starts and pinholes open. Sealant on the seams usually buys a season or two. In summer the same steel takes the sun all afternoon and passes the heat straight into the room, and in a downpour the whole top sounds like a drum.
A second roof with a real slope changes the situation, because the rain and the sun land on the new roof first and the container top stays in shade. Owners in Korea usually choose between a sandwich panel roof (컨테이너 지붕 판넬) and a lighter sheet roof on a steel frame. This article covers the second option with Santiago's ASA/PVC tile sheet, which gives a container, a 농막 or a flat-roof annex the look of a tiled roof.
How does a pitched roof over a container keep the room cooler?
The new roof shades the steel top, and the space between the two lets hot air move out. Leave the gable ends and the sides under the eaves open (insect mesh is fine) so the air under the sheet can escape instead of building up.
In Santiago's tests the space under the tile sheet stays 6 – 8 °C cooler than under bare metal sheet, and rain noise is about 80% lower. Those figures compare the sheet with metal roofing. Inside a container the result also depends on the gap, the airflow and any insulation, so read them as the sheet's own performance, not a promise for your room. The tile sheet is not an insulation panel either: if the 농막 is used in winter, insulate the ceiling and walls inside as a separate job.
The sheet is made in Vietnam from four co-extruded layers with no glue: an ASA top layer that carries the colour and blocks UV, a virgin PVC layer, a PVC core and a milky-white PVC base. There is no metal in it, so there is nothing to rust. Thickness is 2.5 or 3.0 mm (2.5 mm is the minimum for a roof), and it weighs about 5.4 kg per m² of roof.
Grey tile sheets being laid on a steel-frame roof, with an installer on the roof, Vietnam
What frame, slope and purlin spacing does a container roof need?
A light steel frame carries the roof: posts fixed to the container or to their own footings, rafters, and purlins across the rafters. Your local builder sizes the steel and the anchors for the wind and snow where the container stands. Santiago's rules start at the purlins:
- Purlins less than 700 mm apart: 440 or 660 mm for the tile sheet, one purlin under the foot of a tile step
- Top purlin 15 – 18 cm below the ridge, so the ridge cap has something to screw into
- Roof slope between 20% and 45%
- Pre-drill 6 mm holes and drive 70 mm screws with ASA caps through the top of the wave over a purlin, 4 – 5 sets per m²
- Never screw in the valley, where the water runs
- Lap each sheet over the next by one wave
Fix any rust holes in the old container top before the new roof goes on. Once the frame and sheets are in place, you will not reach them easily.
How many sheets does a 20 ft container roof need? A worked example
Take a 20 ft container used as a 농막, with a roof frame 6 m long and 3 m wide and the ridge along the 6 m side. Two choices keep the order simple. First, let the roof run 36 cm past each gable end, so the ridge is 6.72 m long: that is exactly 7 sheets of 0.96 m cover width, and the overhang shades the door at the end. Second, use a 40% slope. Over a 1.5 m half-width the slope length is about 1.62 m; let the eave overhang about 13 cm further and each face becomes 1.752 m, exactly 8 tile steps of 219 mm. The ridge then sits about 60 cm above the eave line.
| Step | Working | Result |
|---|---|---|
| Sheets per face | 6.72 m ÷ 0.96 m | 7 sheets |
| Sheet length | 8 tile steps × 219 mm | 1.752 m |
| Sheets for the roof | 7 × 2 faces | 14 sheets, about 24.5 running metres |
| Roof area | 6.72 m × 1.752 m × 2 | about 23.5 m² |
| Screw sets with ASA caps | 23.5 m² × 4 – 5 per m² | about 95 – 120 |
| Ridge | Length of the ridge | 6.72 m of ridge cap and 2 ridge terminals |
| Eave sealing tile | Both eaves | 2 × 6.72 m = 13.44 m |
| Purlins (local supply) | 440 or 660 mm spacing on a 1.75 m face | about 4 – 5 rows per face, 6.72 m each |
| Sheet weight | 23.5 m² × 5.4 kg | about 127 kg |
The sheets add about 127 kg to the frame. The frame still needs proper anchoring, because a roof with open gable ends catches wind from below; that calculation belongs to your builder.
What does Santiago supply, and what does the Korean builder do?
| Job | Who does it |
|---|---|
| Tile sheets cut to length in 219 mm steps | Santiago |
| Ridge cap, ridge terminals, eave sealing tile, wall flashing and ASA screw caps in the roof colour | Santiago |
| Installation videos for the installer | Santiago |
| Quality certificate (CQ) with every lot | Santiago |
| Steel frame, posts, anchors and purlins | Local builder |
| Screws, drilling and fixing on site | Local installer, following Santiago's videos |
| Permit or reporting questions for a 농막 or container | Owner, with the local 시·군청 |
Santiago sells for export by the container. The minimum order is one 40 ft container, about 5,000 m of sheet, with colours, profiles and accessories mixed in one load, and production takes about 5 days. One container roof uses about 24.5 m, so a single owner normally buys through a Korean importer, dealer or container-house maker. The goods ship under HS code 3925.90.00 to Busan or Incheon. The Korea–Vietnam FTA (VKFTA) and the ASEAN–Korea FTA may give a duty preference with a certificate of origin; check the rate with your customs broker (관세사).
Prices are quoted per order in writing. Samples are free; the buyer pays the courier. The factory works under ISO 9001:2015 certificate ICI-23087.D and has Quatest test results, and the 10-year warranty covers 2.5 mm and thicker sheet installed as Santiago recommends.
Why do metal roofs get hot and loud, and what changes with a PVC tile sheet?
Mr Quyen holds a white tile sheet in the Santiago factory in Vietnam and explains in English, with captions, why bare metal roofs are hot, noisy in rain and costly to repair. The short then moves to a red tile roof on a house and a walk along a finished grey tile roof beside the gutter.
Heat and rain noise: Santiago ASA/uPVC roofing explained (Santiago video on YouTube).
Short videos for container and farm-hut roofs in Korea
Three more English shorts from the Santiago YouTube channel. Each one is about a minute or less.
How do the sheets react to heat on a sunny roof?
A flame is put to a stack of grey and red tile sheets, Mr Quyen crouches on grey sheets in the factory, and the short ends on a blue warehouse roof where installers lay new sheets. A flame test is a demonstration, not a fire rating.
Heat test and a warehouse re-roof with uPVC sheets (Santiago video on YouTube).
How tough is a tile sheet before it goes on a container roof?
A Santiago delivery truck drives over a blue ASA/PVC tile sheet and a blue corrugated sheet laid on the factory yard in Vietnam. It is a demonstration only; on a roof the sheet still needs purlins less than 700 mm apart.
Truck test on Santiago ASA/PVC sheets (Santiago video on YouTube).
What does fixing a grey tile roof on a frame look like?
Installers screw grey Santiago tile sheets down on a roof while Mr Quyen and a colleague walk along the finished section near the gutter. The short opens in the factory with a green sheet.
Santiago uPVC tile roofs on site (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
Can I put a tile roof on top of a shipping container?
Yes, on a light steel frame built over the container. The tile sheet needs purlins less than 700 mm apart (440 or 660 mm) and a slope of 20 – 45%. A 20 ft container with a gable roof takes 14 sheets of 1.752 m.
Will a second roof stop my container roof leaking?
The new roof sheds rain before it reaches the flat steel top, so water no longer sits in the dents. Repair any rust holes in the old top before the new roof goes on, because they are hard to reach afterwards.
Is the ASA/PVC tile sheet an insulation panel?
No. In Santiago's tests the space under it stays 6 – 8 °C cooler than under bare metal sheet and rain noise is about 80% lower, but for a 농막 used in winter you still insulate the ceiling and walls inside.
Can I buy the roof for one container directly from Vietnam?
Santiago's minimum export order is one 40 ft container, about 5,000 m of sheet with colours and accessories mixed. One container roof uses about 24.5 m, so owners usually buy through a Korean importer or container-house maker. Samples are free; the buyer pays the courier.
Read more
- Roof heat and rain noise: metal vs ASA/PVC (Korean)
- Importing roofing from Vietnam to Korea (Korean)
- How to install PVC roof tile sheets
- Santiago heat, noise and corrosion tests
- ASA/PVC roof tile sheet
한국어 버전
컨테이너나 농막의 평평한 철판 지붕 위에 가벼운 철골 프레임을 세우고 Santiago ASA/PVC 기와형 지붕재로 경사 지붕을 얹으면, 빗물이 새 지붕에서 바로 흘러내려 상판에 고이지 않습니다. Santiago 시험에서 이 지붕재 아래 공간은 맨 금속 지붕보다 6~8 °C 낮았고 빗소리는 약 80% 줄었습니다. 20피트 컨테이너 한 동의 박공 지붕에는 1.752 m 시트 14장, 약 24.5 m가 들어갑니다.
컨테이너 지붕 누수는 왜 생기나요?
컨테이너 상판은 얇은 골철판이 거의 수평으로 놓인 구조입니다. 빗물이 빨리 빠지지 않고, 지게차나 크레인 작업으로 생긴 움푹한 곳과 모서리에 고입니다. 녹은 거기서 시작되고 작은 구멍이 생깁니다. 실리콘으로 이음부를 막아도 오래가지 않는 경우가 많습니다. 여름에는 같은 철판이 오후 내내 햇볕을 받아 열을 실내로 전하고, 소나기가 오면 상판 전체가 북처럼 울립니다.
경사 지붕을 하나 더 올리면 비와 햇볕을 새 지붕이 먼저 받고, 컨테이너 상판은 그늘에 들어갑니다. 기존 상판의 녹슨 구멍은 새 지붕을 올리기 전에 보수해 두세요. 지붕을 덮은 뒤에는 손이 닿기 어렵습니다.
컨테이너 지붕 단열, 지붕을 하나 더 올리면 달라지나요?
새 지붕이 철판 상판에 그늘을 만들고, 두 지붕 사이 공간으로 더운 공기가 빠져나갑니다. 박공 양쪽 끝과 처마 아래 옆면은 막지 말고 방충망 정도만 두는 편이 좋습니다. Santiago 시험 수치(지붕재 아래 6~8 °C 낮음, 빗소리 약 80% 감소)는 금속 지붕과 비교한 값입니다. 컨테이너 안의 실제 온도는 두 지붕 사이 간격, 통풍, 실내 단열에 따라 달라집니다.
기와형 지붕재는 단열 판넬이 아닙니다. 겨울에도 쓰는 농막이라면 천장과 벽 단열은 실내에서 따로 해야 합니다. 컨테이너 지붕 판넬(샌드위치 판넬)은 단열재가 붙은 제품이고, 기와형 시트는 기와 지붕 모양과 빗소리 감소가 장점입니다. 단열까지 지붕에서 해결할지, 단열은 실내에서 하고 지붕은 외관과 빗물 처리를 맡길지에 따라 고르면 됩니다.
시내 건물 옥상 위에 만든 주황색 기와 지붕과 시공자들, 베트남
컨테이너 지붕 설치, 20피트 한 동에 자재는 얼마나 필요한가요?
길이 6 m, 폭 3 m 프레임 위에 박공 지붕을 올리고 용마루는 6 m 방향으로 둔다고 해 봅시다. 양쪽 박공 끝을 36 cm씩 내밀면 용마루가 6.72 m가 되어 유효폭 0.96 m 시트 7장이 딱 맞고, 출입문 쪽에 그늘도 생깁니다. 경사는 40%로 잡습니다. 폭의 절반 1.5 m에 40% 경사면 경사 길이가 약 1.62 m이므로, 처마를 13 cm쯤 더 내밀어 한쪽 면을 1.752 m(기와 피치 219 mm × 8)로 맞춥니다. 용마루는 처마선보다 약 60 cm 높아집니다.
| 항목 | 계산 | 결과 |
|---|---|---|
| 한쪽 면 시트 | 6.72 m ÷ 0.96 m | 7장 |
| 시트 길이 | 219 mm × 8피치 | 1.752 m |
| 전체 시트 | 7장 × 2면 | 14장, 약 24.5 m |
| 지붕 면적 | 6.72 × 1.752 × 2 | 약 23.5 m² |
| 피스(ASA 캡 포함) | 23.5 m² × 4~5세트 | 약 95~120세트 |
| 용마루 | 용마루 길이 | 용마루 6.72 m, 마구리 2개 |
| 처마 마감 | 양쪽 처마 | 2 × 6.72 m = 13.44 m |
| 중도리(국내 조달) | 440 또는 660 mm 간격 | 한쪽 면 4~5줄, 줄당 6.72 m |
| 시트 무게 | 23.5 m² × 5.4 kg | 약 127 kg |
시공 기준은 이렇습니다. 중도리 간격은 700 mm 미만(기와형은 440 또는 660 mm, 기와 피치 발 밑마다 중도리 하나), 맨 위 중도리는 용마루에서 15~18 cm 아래, 경사는 20~45%입니다. 6 mm로 먼저 구멍을 뚫고 70 mm 피스를 ASA 캡과 함께 골 머리(산 부분)에, 중도리 위에만 박습니다. 물이 흐르는 골에는 절대 박지 않고, 옆 시트와는 한 골 겹칩니다.
옥상 태양열 온수기 옆의 빨간색 기와형 지붕, 베트남
농막 지붕, 누가 시공하고 Santiago는 무엇을 보내나요?
Santiago는 219 mm 단위로 재단한 시트와 용마루, 마구리, 처마 마감, 벽체 후레싱, ASA 피스 캡을 같은 색으로 공급하고 시공 영상을 보냅니다. 직접 시공은 하지 않습니다. 철골 프레임, 고정, 중도리, 현장 시공은 국내 시공자가 맡고, 눈과 바람에 맞춘 프레임 설계도 시공자의 일입니다. 농막이나 컨테이너 위에 지붕 구조물을 올리기 전에는 신고나 허가에 영향이 있는지 시·군청에 먼저 확인하세요.
수출 최소 주문은 40피트 컨테이너 1대, 시트 약 5,000 m이며 색상, 형태, 부속을 한 컨테이너에 섞을 수 있습니다. 컨테이너 한 동 지붕은 약 24.5 m이므로 보통 국내 수입업체, 대리점, 컨테이너 하우스 제작사를 통해 구매합니다. HS 코드는 3925.90.00이고 부산항이나 인천항으로 들어옵니다. 한-베트남 FTA(VKFTA)나 한-아세안 FTA는 원산지증명서가 있으면 관세 혜택을 줄 수 있으니 세율은 관세사에게 확인하세요. 가격은 주문별로 서면 견적을 드리며, 샘플은 무료이고 택배비만 구매자가 부담합니다.
자주 묻는 질문
컨테이너 위에 기와 지붕을 올릴 수 있나요?
네. 컨테이너 위에 가벼운 철골 프레임을 세우고 중도리를 700 mm 미만(440 또는 660 mm) 간격으로 걸어 경사 20~45%로 시공합니다. 20피트 한 동 박공 지붕에는 1.752 m 시트 14장이 들어갑니다.
지붕을 하나 더 올리면 누수가 멈추나요?
빗물이 새 지붕에서 흘러내리므로 평평한 상판에 물이 고이지 않습니다. 다만 기존 상판의 녹슨 구멍은 새 지붕을 올리기 전에 보수해 두세요.
기와형 지붕재로 단열이 되나요?
단열 판넬은 아닙니다. Santiago 시험에서 지붕재 아래가 맨 금속 지붕보다 6~8 °C 낮고 빗소리가 약 80% 줄었지만, 겨울에 쓰는 농막은 천장과 벽을 실내에서 따로 단열해야 합니다.
지붕 색은 무엇이 있나요?
진회색, 빨강, 파랑, 주황, 초콜릿이 기본색이고 초록, 흰색, 보라는 주문 생산합니다. 용마루와 마구리도 같은 색으로 나옵니다.
Sources for the figures in this article
- Profiles, 2.5–3.0 mm thickness and 10-year warranty: Santiago ASA/PVC product specification.
- About 6–8 °C cooler than bare metal sheet and about 80% less rain noise: Santiago's own comparisons on finished roofs in Vietnam.
- 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.
