WeatherBloc Gypsum Board
Home > Products > Boards > Elephant Gypsum > WeatherBloc Gypsum Board
- Durable
- Export Quality
WeatherBloc Gypsum Board
WeatherBloc Gypsum Board is a durable, export-quality board designed for superior water resistance and long-lasting performance in humid or damp environments. Its specially treated core reduces water absorption, while a protective cover prevents moisture penetration, keeping surfaces mold-free and stable.
The lightweight construction ensures easy and quick installation, making it ideal for residential, commercial, and industrial interiors. WeatherBloc Gypsum Board is available in two types: plain and with ventilation holes, providing flexibility for different applications such as ceilings, partitions, and exterior-facing interiors.
Manufactured with health-safe and environmentally friendly materials, it poses no health hazards and is fully recyclable, delivering a sustainable and reliable solution for moisture-prone areas.
Standards & Tests
- TIS 219-2552
- ASTM C1396
- ASTM D3273
Working Properties
For Orders & Queries
- Support 24/7
- Nationwide Delivery
Size & Thickness
1200 x 2400 x 9 mm
1200 x 2400 x 9 mm
1200 x 2400 x 9 mm
Share on Social Media:

Marine Decking

Architectural Builds

Housing
Social Responsibility
Fully cognizant of our Corporate Social Responsibility, we take all possible measures for the safety and security of our employees, their health, working conditions and environment in and around the place of work. This includes compliance with standard operating procedures (SOPs) for industrial safety; and conscious avoidance of hazardous materials.
Frequently Asked Questions
Find answers to commonly asked questions about our products, including specifications, installation, usage, product features, and everything else you need to know.
What is WeatherBloc Gypsum Board?
WeatherBloc Gypsum Board is a specialized gypsum board designed for applications where resistance to water and moisture is important. It is particularly suited to damp environments and external ceiling applications where conventional interior gypsum boards may not be appropriate.
The board is available in both plain and ventilated versions, allowing it to be selected according to the requirements of the installation.
What are the main benefits of WeatherBloc Gypsum Board?
WeatherBloc is designed to provide water resistance and reduce water absorption, making it suitable for environments exposed to higher levels of moisture.
It is also described as mold-free and designed for quick and easy installation. The availability of plain and ventilated versions provides additional flexibility for different ceiling applications.
How does WeatherBloc resist water and moisture?
WeatherBloc uses a material formulation that reduces water absorption together with a special covering designed to prevent water from being absorbed into the board.
This makes it suitable for applications where moisture resistance is required. However, water-resistant gypsum board should still be installed as part of a properly designed system and should not be treated as a replacement for waterproofing where direct or prolonged water exposure is expected.
Is WeatherBloc Gypsum Board suitable for exterior ceilings?
Yes. WeatherBloc is designed for applications including external or eave ceilings where moisture exposure is a concern. The manufacturer’s specifications identify WeatherBloc as an external ceiling gypsum-board solution and provide both standard and punched/ventilated patterns for these applications.
The supporting framing and installation system should be selected according to the requirements of the particular exterior ceiling.
What is the difference between plain and ventilated WeatherBloc?
WeatherBloc is available in two versions: plain and ventilated, with the ventilated version incorporating ventilation holes.
The appropriate version depends on the requirements of the ceiling design and ventilation arrangement. For external ceiling applications, the ventilation pattern can be used where the design calls for a ventilated surface.
Does WeatherBloc Gypsum Board resist mold growth?
WeatherBloc is described as mold-free and is designed for use in damp and moisture-prone environments.
Its moisture-resistant construction can help reduce conditions associated with mold growth on the board. However, controlling persistent moisture, condensation and water leakage remains important for maintaining the overall condition of the installation.
Can WeatherBloc be used for walls and ceilings?
WeatherBloc is primarily suited to applications where increased resistance to moisture and water is required, with the manufacturer’s information specifically highlighting external/eave ceiling applications.
For conventional interior walls and ceilings where weather or significant moisture exposure is not a concern, other products in the Elephant range may be more appropriate. For example, Standard Gypsum Board is designed for general interior wall and ceiling applications.
What size and thickness is WeatherBloc Gypsum Board available in?
WeatherBloc Gypsum Board is available in a 1200 × 2400 mm format with a 9 mm thickness. The board has a tapered edge and an average unit weight of approximately 16.7 kg according to the manufacturer’s specifications.
The required quantity should be calculated according to the total ceiling area, while allowing for cutting, joints and installation requirements.
How is WeatherBloc Gypsum Board installed?
WeatherBloc is installed as part of a suitable ceiling system using appropriate framing and fixing components. For external ceiling applications, the supporting structure and hanging system need to be selected to provide adequate support for the finished ceiling.
The manufacturer’s installation guidance specifies the use of an appropriate framing and hanging system for external ceiling applications.
For the finished surface, Elephant Easy Joint can be considered where joint treatment is required for compatible gypsum-board applications.
How do I choose the right gypsum board for moisture-exposed areas?
The right board depends on the type and level of moisture exposure and whether the installation is indoors or outdoors.
WeatherBloc is specifically suited to applications requiring water resistance, including damp environments and external/eave ceilings. For moisture-prone interior spaces, MoldBloc Gypsum Board is designed with mold-resistant properties, while other specialized Elephant boards address requirements such as fire resistance, acoustic performance and heat reflection.
The board should therefore be selected according to the actual environmental conditions and performance requirements of the complete installation.