The Advantages of GRC Board as a Roof Overhang Material in Tropical Climates

A roof overhang is an extension of the roof that protrudes beyond the wall. Its function is to protect exterior walls from rain splashes, minimize the amount of sunlight entering the room, and serve as an aesthetic element of the home. In this context, a material is needed that can withstand UV exposure, heavy rain, and daily temperature fluctuations.

One material suitable for roof overhang applications is GRC board. The base material of GRC board is cement that has undergone pressing and durability testing as a building construction material. Its denser structure provides GRC board with extra strength. When heavy rain flows over the GRC board roof overhang, the water will run off and dry without damaging the board’s structure. Additionally, the material is mold-resistant, termite-resistant, and weather-resistant. This contrasts with some other materials that may experience delamination when used in weather-exposed areas.

Aesthetically, GRC boards used as roof overhangs come in a variety of designs. These range from standard roof overhang types with a smooth surface to those with textured surfaces resembling wood grain details. An example is the 8 mm thick x 200 mm wide x 3000 mm long GRC Ecoline Mahogany.

GRC boards are a suitable and recommended choice for roof overhang applications, particularly in tropical climates. Their advantages including resistance to rain exposure, UV resistance, fire resistance, mold resistance, and ease of finishing make GRC boards a long-term investment for building owners. So, consider using GRC boards as the primary material for your next construction or renovation project. 

Proper Installation of GRC Mahoni Deck with the Right Screed Base

Outdoor areas such as yards, balconies, and gardens are synonymous with the feel and look of wood. Now, home owners can rest easy thanks to the availability of materials that are more durable and easier to maintain. GRC Mahoni Deck offers a solution for those who desire the luxury of a wood like texture combined with weather resistant material quality.

GRC Mahoni Deck: Wood Textured Balcony Flooring with the Strength of Cement Boards

GRC Mahoni Deck material is designed to replicate the visual appeal of wood grain. This product is the top choice and recommendation for use in pool decks, gardens, and balconies. Some of its advantages:

Termite Resistant, Mold Resistant, and Rot Resistant

Unlike other materials, GRC Mahoni Deck is specifically designed for outdoor deck use, making it stronger and more durable.

Premium Aesthetics

In addition to its material strength, the textured appearance of GRC Mahoni Deck creates an elegant and neat look when installed.

However, there is one technical factor that determines the deck’s lifespan: the quality of the screed layer. GRC Mahoni Deck offers various installation methods, such as on a frame or directly onto the screed layer. Proper screeding application is essential for optimal results. Key considerations include:

Perfect Leveling

Uneven flooring can cause GRC Mahoni Deck to crack when walked on. Ensure the base floor surface is perfectly level with a flawless screed.

Drainage Planning

A slope must be incorporated into the screed layer in open areas. This creates a drainage path to prevent water pooling beneath the deck structure.

Load Calculation

A sturdy screed provides support across the entire surface of the GRC Mahoni Deck. This prevents sections of the deck from sagging.

Complete Drying

Ensure the screed layer is completely dry to prevent moisture from being present during the installation of the GRC Mahoni Deck.

Use the Right Adhesive

Adhere the GRC Mahoni Deck to the screed using high-quality instant cement for optimal results.

Pay Attention to Joints

Leave a gap between GRC Mahoni Deck planks to allow for safe expansion and contraction. 

GRC Board’s Collaborative Innovation Presents Garden Reinforced Coffee at ARCH:ID 2026

GRC board returns to Indonesia’s prestigious architecture exhibition, ARCH:ID 2026. This year, we present an installation themed ‘Garden Reinforced Coffee,’ the result of support and participation from visionary architects and expert collaborators in their respective fields.

The successfully constructed work, enjoyed by visitors, proves that construction materials like cement boards aren’t always rigid. Visitors can experience and witness firsthand the flexibility of GRC board material in an aesthetically pleasing garden installation, accompanied by a cup of coffee.

Garden Reinforced Coffee exists thanks to the contributions of experts. One of the visionary architects, Arti Design, conceived this open-air space with the hope that it would serve as a respite amidst the city’s hustle and bustle. Visitors can sit on all sides to rest for a moment and slow down their pace. This installation was designed with an emotional approach, allowing visitors to connect with the environment and feel the atmosphere within it.

This space was built from pieces of GRC board construction material and repurposed into a work of art. In this case, the architect successfully fulfilled their role by viewing raw materials as the starting point for further exploration. A warm and tranquil atmosphere is also created by the lighting elements and landscaping that complement this space. The lighting design was supported by Lighting Designer Erreluce and Lighting Support Centralite. The landscaping was supported by Landscape Designer Kroma Lab. Other expert collaborators, including Ellogrin and the initiators of Wonder of Weaving (WOW), were key to the success of this space’s journey.

The GRC board proudly extends its gratitude to all the experts for their participation and hopes to continue contributing to the future of construction in Indonesia. 

Modern Living Room GRC Board Wall Inspiration

The living room serves as the face of a home—a central gathering spot for both guests and family. Many homeowners are now racing to find wall materials that are not only visually stunning but also durable and low-maintenance. One material currently surging in modern interior design trends is the GRC board.

While GRC boards were previously known primarily for ceilings or room partitions, they have now transformed into multi-application decorative elements capable of delivering a luxurious aesthetic.

3 GRC Board Wall Inspirations for the Living Room

• Wall Batten Style Panels By arranging GRC cement boards vertically with specific spacing, you can achieve the "wall batten" look that is currently trending. Finishing the boards with earth tone paints—such as cream or light gray—can create a sense of spaciousness in your living room.
• Exposed Industrial Accent GRC boards can be installed without thick plastering. Simply apply a transparent coating to highlight the raw, natural cement color. Pair this look with wooden furniture to reinforce an elegant, industrial vibe.
• Luxurious TV Feature Wall The area behind the TV is the perfect spot for decorative GRC applications. Empty spaces can be enhanced using fluted (grooved) GRC decorative panels or smooth-surfaced boards for a sleek, minimalist finish.

Tip for Best Results

To achieve a high-quality finish, it is recommended to use the correct frame dimensions, pay close attention to the joints (seams), and select the appropriate paint type for cement boards. For more detailed material information, please visit the Brochure menu on this website.