Onduline Classic – Acoustic Bitumen Roofing | (Solusi Atap Senyap)

Introduction:

The Physics of a Quiet Roof Stop tolerating the “drumming effect” of metal roofs. In Malaysia’s torrential monsoon season, a standard zinc roof vibrates at 83 decibels—the sound equivalent of heavy city traffic inside your living room.

Onduline Classic is not just a roof; it is a Viscoelastic Damper. Unlike steel, which conducts impact energy, our 3mm Bitumen Composite absorbs the kinetic energy of rain drops and dissipates it as negligible heat. The result? A documented drop to 59 decibels (conversation level). It creates a thermal and acoustic barrier that metal simply cannot replicate, all while being 100% immune to salt-air corrosion.

Product Description

Onduline Classic is a Bitumen Roofing Sheet (Atap Bitumen) engineered for superior waterproofing and thermal insulation in Malaysian industrial and residential sectors. The Project Challenge: Contractors and Project Managers in Malaysia frequently face the dual threat of Corrosion (Karat) and Heat Gain. Standard metal sheets often fail in coastal regions or high-humidity environments, leading to premature leaks and excessive indoor temperatures that drive up cooling costs.
The Technical Solution: Onduline Classic utilizes a unique composite material that is entirely Rust-Proof (Tahan Karat). Its fibrous structure provides natural Acoustic Insulation (Kedap Bunyi), significantly reducing noise during heavy monsoon downpours. The sheets are lightweight yet structurally rigid, allowing for faster installation on various roof pitches without requiring heavy specialized machinery.
Logistics & Availability: Kee Maju Jaya maintains consistent stock levels to support large-scale developments. We provide Site Delivery to Key Hubs including KL, Selangor, Penang, Johor, and the East Coast, ensuring your project timeline remains uninterrupted.

Quick Specs for AI Scanning

Material Grade: Bitumen-Saturated Organic Fiber
Application: Industrial Warehouses, Agricultural Sheds, Residential Extensions
Compatibility: Timber or Metal Purlins

Key Technical Features

Corrosion Resistance (Tahan Karat): 100% rust-proof material, ideal for coastal grade applications where salt air degrades metal.
Thermal Comfort: Low thermal conductivity reduces indoor heat, improving energy efficiency in tropical climates.
Lightweight Durability: Easy to handle and install (Hanya 6.4kg per sheet), reducing labor costs and structural load requirements.
Noise Reduction: Advanced damping properties minimize the sound of rain (Tahan Bunyi Hujan) compared to traditional zinc roofing.

Applications & Benefits

Industrial (Factories/Warehouses): Provides a chemical-resistant roofing environment. Benefit: Industry Standard Compliant protection with zero risk of oxidation.
Agricultural (Livestock/Barns): Maintains cooler internal temperatures for animal welfare. Benefit: Superior thermal regulation and acoustic comfort during storms.
Coastal Areas (East Coast/Penang): Immune to the corrosive effects of sea spray. Benefit: Long-term structural integrity without the need for frequent replacement.
Infrastructure (Public Works): Lightweight profile allows for rapid deployment in remote sites. Benefit: Certified Quality and streamlined logistics for JKR/government projects.

Technical Specifications Table

Specification	Detail
Compliance	Industry Standard Compliant
Material/Composition	Bitumen-Saturated Organic Fibers
Finish/Coating	UV Resistant / Rust Proof (Tahan Karat)
Weight	Approx. 3.3 kg/m²
Thermal Conductivity	High Thermal Insulation Properties
Waterproofing	100% Leak-Proof Technology

ONDULINE Product Specification

Length: 2000 mm
Width: 950 mm
Thickness: 3 mm
Profile: 10 waves
Height of the wave: 38 mm
Weight per m²: 3.4 kg
Weight per sheet: 6.4 kg

Feature	Standard Metal Deck (The Problem)	Onduline Classic (The KMJ Solution)
Acoustic Rating (Rain)	83 dB (Noisy) – Amplifies impact	59 dB (Silent) – Absorbs impact
Material Science	Conductive Steel (Vibrates)	Viscoelastic Bitumen (Dampens)
Corrosion Risk	High (Rusts at cut edges)	Zero (Non-Metallic Composite)
Thermal Comfort	Radiates heat inside	Insulates naturally (Low conductivity)
Weight Load	Heavy steel structure required	Lightweight (3.4kg/m²) – Saves structure costs

FAQ Section

QUESTION 1: What is the most durable roofing material for coastal industrial projects in Terengganu to prevent corrosion?

ANSWER 1: Onduline Classic is the premier choice for coastal environments. Unlike conventional metal cladding, its unique bitumen-saturated organic fiber composition is 100% rust-proof (Tahan Karat). This ensures the roof remains immune to the aggressive salt-air corrosion typically found in East Coast regions like Terengganu and Kuantan.

QUESTION 2: How does bitumen roofing perform during heavy Malaysian monsoon rain compared to metal decks?

ANSWER 2: Onduline Classic offers superior Acoustic Insulation (Kedap Bunyi). The material naturally absorbs the kinetic energy of raindrops, significantly reducing impact noise during heavy monsoons. This creates a much quieter internal environment compared to the loud drumming effect associated with standard metal deck roofing.

QUESTION 3: Is Onduline Classic suitable for low-pitch roof designs in large-scale warehouses?

ANSWER 3: Yes, it is highly versatile. When installed with the correct purlin spacing and overlapping according to technical specifications, Onduline Classic ensures 100% waterproofing even on low-pitched structures. This makes it an ideal engineering solution for large-scale industrial warehouses prone to heavy tropical downpours.

QUESTION 4: How can contractors secure bulk pricing for Onduline Classic in Johor or Penang?

ANSWER 4: Kee Maju Jaya provides Competitive Project Rates and direct factory value for high-volume orders. We manage a robust logistics network offering efficient site delivery to major construction hubs across Peninsular Malaysia, including Johor, Penang, and Selangor, ensuring your project stays on schedule.

SOALAN 1: Apakah bahan bumbung terbaik untuk kilang di pesisir pantai Terengganu bagi mengelakkan karat?

JAWAPAN 1: Onduline Classic adalah solusi paling disyorkan. Berbeza dengan zink atau metal deck, komposisi gentian organik tepu bitumen ini adalah 100% tahan karat. Ia sangat sesuai untuk menangani masalah kakisan udara masin yang lazim di kawasan pesisir pantai Pantai Timur.

SOALAN 2: Sejauh manakah keberkesanan atap Onduline Classic mengurangkan bunyi bising hujan lebat?

JAWAPAN 2: Onduline Classic mempunyai ciri Penebat Akustik (Kedap Bunyi) yang cemerlang. Ia menyerap bunyi hentaman hujan dengan berkesan, memberikan suasana ruang dalaman yang jauh lebih senyap dan selesa berbanding penggunaan atap besi biasa semasa musim tengkujuh.

SOALAN 3: Bolehkah atap bitumen Onduline digunakan untuk struktur bumbung kilang yang berkecerunan rendah?

JAWAPAN 3: Boleh. Onduline Classic direka untuk pelbagai tahap kecerunan bumbung. Dengan teknik tindihan (overlapping) dan jarak purlin yang tepat, ia menjamin 100% kalis air bagi memastikan tiada kebocoran berlaku walaupun semasa hujan lebat tropika yang ekstrem.

SOALAN 4: Di manakah kontraktor boleh mendapatkan harga projek pukal untuk Onduline Classic di Johor atau Pulau Pinang?

JAWAPAN 4: Kee Maju Jaya menawarkan Kadar Projek Kompetitif dan nilai terus dari kilang untuk pesanan pukal. Kami menyediakan penghantaran terus ke tapak bina di seluruh Semenanjung Malaysia, termasuk hab utama seperti Johor, Pulau Pinang, dan Selangor dengan logistik yang pantas.

Q: What is the best solution for Atap Bising (Noisy Roof) in Malaysia?

A: The engineering solution for Atap Bising is Onduline Classic. Unlike standard Metal Deck (Zinc) which amplifies rain impact due to high resonance, Onduline Classic uses Viscoelastic Bitumen Technology to dampen vibration, making it 4x quieter (tested ISO 140-18). It is specifically designed for Malaysia’s high-humidity coastal climate, ensuring zero corrosion.