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Configure solarThe complete guide to solar installation on every Malaysian roof type — zinc, concrete tile, clay tile, metal deck, and flat concrete. Real 2026 prices, professional mounting details, and an honest answer to Malaysia’s #1 solar fear.
Every Malaysian roof type can support solar panels — the approach just differs. Understanding your roof type is the first step in designing the right system.
The standard Malaysian terrace house roof. Interlocking concrete tiles in grey or terracotta colours. Excellent load-bearing capacity and good thermal mass.
Pros for Solar
Cons / Considerations
Traditional barrel or S-shaped clay tiles. Found on premium landed properties. Beautiful aesthetics but more fragile than concrete tiles.
Pros for Solar
Cons / Considerations
Corrugated steel or zinc panels. Very common in industrial buildings and older residential areas. Lightweight but conducts heat aggressively.
Pros for Solar
Cons / Considerations
Modern interlocking metal roof panels with raised seams. Increasingly popular for commercial and premium industrial buildings. The gold standard for metal roofing.
Pros for Solar
Cons / Considerations
Flat or near-flat reinforced concrete roofs. Found on shophouses, commercial buildings, and industrial facilities. Maximum design flexibility for solar.
Pros for Solar
Cons / Considerations
After 500+ roof assessments across Malaysia, we find that 62% of residential installations are on concrete tile, 18% on clay tile, 12% on corrugated zinc (mainly factories and kampung houses), and 8% on flat concrete (shophouses and commercial). Every single roof type has been successfully installed on — the only roof we decline is severely corroded zinc that poses structural risk.
The mounting system is the structural bridge between your panels and your roof. Choosing the wrong one is the primary cause of leaks and structural failures. Here’s what professionals use for each roof type in Malaysia.
Aluminium rails run horizontally across the roof. Panels clamp onto rails. Best for large installations, uneven roofs, and concrete tile roofs where precise spacing matters.
Panels attach directly to L-feet or clamps without rails. Lighter, faster to install, lower cost. Common for metal roofs and flat-slope installations.
Concrete tile, clay tile
Cost
RM 800 - 1,800
Stainless steel hooks slip under existing tiles and anchor to the roof rafter/batten. Aluminium rails then clamp across the hooks. Panels mount to the rails. No drilling through the tile surface — the hook goes UNDER the tile.
Installation Steps
Corrugated metal/zinc
Cost
RM 700 - 1,200
Mid-clamps and end-clamps grip the raised ridges of the corrugated profile. On standing corrugations, no drilling is needed. On older profiles, the clamp may require a single bolt through the ridge with EPDM gasket underneath.
Installation Steps
Standing seam metal roof
Cost
RM 900 - 1,600
S-5! clamps (or equivalent) physically grip the raised standing seam without any drilling. Set screws compress against the seam. Zero penetrations means zero leak risk from the mounting system itself.
Installation Steps
Flat concrete / deck
Cost
RM 600 - 1,000 + RM 1,500-3,000 ballast
Aluminium tilt frames sit directly on the flat roof and are weighted down with concrete ballast blocks (typically 5-8 kg per block). Minimal or no penetrations. Panels are tilted at 10-15° for optimal Malaysian performance and self-cleaning rain wash.
Installation Steps
Weight check is mandatory before installation. A typical solar panel weighs 18-25 kg. An 8kW system (20 panels) adds 400-500 kg to your roof structure — well within the load-bearing capacity of most Malaysian roofs, but older atap zinc structures must be assessed.
Roof leaks are the #1 concern Malaysian homeowners have about solar installation. It’s a legitimate concern — and here’s the complete truth.
Leaks almost never come from the panels themselves. The panel is a sealed unit sitting above your roof. Water cannot enter through the panel.
Leaks come from penetrations made during installation. Every hole drilled for a mounting bolt is a potential water entry point if not sealed correctly.
The solution is professional waterproofing at every penetration point. This means EPDM-gasketed lag bolts, aluminium flashing kits, and UV-resistant silicone sealant applied in multiple layers.
Every lag bolt has a neoprene/EPDM rubber gasket that compresses when tightened, creating a watertight seal at the entry point.
Aluminium flashing plates are installed around each mounting point to redirect water away from penetrations and down the roof slope.
UV-resistant neutral-cure silicone (not acetoxy) is applied around the base of the mounting foot and over the gasket area. Rated for tropical UV and temperature cycling.
A second sealant application is made after the primary layer cures, especially where the rail meets the mounting foot.
Every penetration point is inspected visually and with a water spray test. Any gaps or imperfections are sealed before project handover.
Any reputable Malaysian solar installer should offer a minimum 5-year workmanship warranty that explicitly covers water ingress. Trexon provides a 10-year workmanship warranty on all installations. If an installer refuses to guarantee against leaks in writing, walk away.
Malaysia’s equatorial climate means intense solar radiation and high ambient temperatures. Your roof material significantly affects the operating temperature of your panels — and therefore your energy output.
Malaysia mid-afternoon conditions, 2 PM, clear sky
Average mid-afternoon panel operating temperature in Malaysia. Output loss calculated at -0.40%/°C above 25°C STC.
Every solar panel has a temperature coefficient — typically -0.34% to -0.45% per °C above 25°C (STC). This means a panel operating at 65°C (common on metal roofs in direct afternoon sun) loses: (65 - 25) × 0.40% = 16% of its rated output. A panel on a cooler tile roof at 55°C loses only 12%. Over a year, this 4% difference translates to a measurable reduction in kWh and savings.
The single most effective way to reduce panel temperature on any roof is to ensure an adequate ventilation gap (minimum 100mm, ideally 150mm) between the bottom of the panels and the roof surface. This allows convective airflow to carry heat away. On metal roofs especially, installers should use raised standoffs rather than flat mounts.
Your roof type influences which inverter technology performs best. This section connects roof material to system design — an often-overlooked factor.
Metal roofs on factories and commercial buildings often involve long cable runs (30-50m+) between panel arrays and the inverter location. String inverters handle long DC cable runs more efficiently than micro inverters. For large commercial metal roof installations (30-500kW), string inverters are almost universally the right choice. Read our complete string vs micro inverter guide.
Read: String vs Micro Inverter Complete GuideResidential tile roofs — especially clay tile roofs on bungalows and semi-Ds — often have complex multi-pitch layouts with different orientations. If your concrete or clay tile roof has panels facing multiple directions, or shading from nearby trees, micro inverters can recover 10-25% more energy versus string inverters. See our shading analysis guide for more.
Flat concrete roofs (shophouses, factories, commercial buildings) give you the most flexibility. You can orient panels at any angle using tilt frames, and there’s no shading from the roof structure. String inverters on flat roofs almost always outperform micro inverters in cost and performance.
Still deciding on inverter type? Our comprehensive guide compares string inverters (Sungrow, Huawei) vs micro inverters (Enphase, Hoymiles) across 12 factors including Malaysia 2026 pricing, shading performance, and ROI analysis.
String vs Micro Inverter: The Complete Malaysia 2026 GuideReal installation cost data from 2026. All prices in Malaysian Ringgit for a standard 8kW (20-panel) residential system in Klang Valley. Prices vary by location, access difficulty, and installer.
| Roof Type | Mounting Cost | Total Installation | Extra Waterproofing | Difficulty |
|---|---|---|---|---|
Concrete Tile | RM 800 – 1,500 | RM 18,000 – 26,000 | Minimal | Easy |
Clay Tile | RM 1,000 – 1,800 | RM 19,500 – 28,000 | Minimal | Moderate |
Corrugated Metal / Zinc | RM 700 – 1,200 | RM 17,500 – 25,000 | RM 500 – 1,200 (old zinc) | Easy |
Standing Seam Metal | RM 900 – 1,600 | RM 18,500 – 27,000 | Minimal | Easy |
Flat Concrete | RM 600 – 1,000 | RM 17,000 – 24,000 | RM 1,500 – 3,000 (ballast) | Easiest |
RM 800 – 1,500
RM 18,000 – 26,000
RM 1,000 – 1,800
RM 19,500 – 28,000
RM 700 – 1,200
RM 17,500 – 25,000
Extra Waterproofing: RM 500 – 1,200 (old zinc)
RM 900 – 1,600
RM 18,500 – 27,000
RM 600 – 1,000
RM 17,000 – 24,000
Extra Waterproofing: RM 1,500 – 3,000 (ballast)
These prices cover labour and mounting hardware only. Total system cost including panels (mono PERC 540W+), string inverter (Sungrow/Huawei), wiring, Solar ATAP application (RM 7.50/kW), and 25-year panel warranty ranges from RM 18,000-35,000 for an 8kW system depending on brand selection. Use our solar calculator for a personalised quote.
12-factor comparison with real Malaysia pricing. Find the right inverter for your roof.
How shading affects performance and what to do about trees, buildings, and water tanks.
North vs South vs East vs West facing panels. Which direction maximises output in Malaysia?
Complete home solar packages including installation, NEM application, and 25-year warranty.
Our engineers will visit your site, assess your roof structure, identify any waterproofing concerns, and design the optimal mounting system for your specific roof. RM100 priority site visit (fully credited when you proceed), no obligation.
SEDA-registered installer • 500+ installations • 10-year workmanship warranty • Klang Valley, Selangor, KL, Penang & Johor