4 Types of GRC Screws and Their Functions
Have you ever experienced cracked GRC boards while drilling, or screw heads that protrude and are difficult to cover with compound during finishing? These common issues often occur when using regular screws or those that are not suited to the specific thickness of the board.
Choosing the wrong screws does not only compromise aesthetics but also risks reducing the structural integrity of GRC boards in ceiling, wall, floor, and decking applications. Since GRC boards come in various sizes and thicknesses, GRC board accessories—including specialized screws—are available in multiple dimensions to ensure a sturdy and long-lasting installation.
To ensure optimal locking and a perfect flush finish, GRC board offers four types of specialized screws. Here is a complete guide to their functions:
4 mm GRC Screw
This screw is specifically engineered for installing 4 mm thick GRC boards, which are commonly used for economical ceiling applications. Due to the board's thin profile, specific technical requirements are needed to prevent the edges from cracking.
- Key Features: It features a thinner head and a single-thread system, allowing it to grip the frame firmly without putting excessive pressure on the delicate surface of the board.
5–8 mm GRC Screw
Designed for medium-thickness GRC boards (5–8 mm), these screws are the standard for wall and sturdier ceiling partitions.
- Key Features: The head is equipped with fins and a double-thread system. This design is intended to "scrape" the board as it enters, allowing the screw head to be easily countersunk without damaging the surrounding surface.
- Note: These are not recommended for 4 mm boards as the size is too large and may cause breakage.
9–20 mm GRC Screws
These screws are used for heavy-duty GRC boards with a thickness of 9 mm to 15 mm. Generally used for board applications such as partition walls, floors, decks, and outdoor cladding that require high stability. Using standard screws for this thickness is ineffective. These specialized screws provide the maximum fastening power needed to support the weight and pressure typically found in flooring structures.
- Key Features: They provide a deeper reach and stronger pull-out resistance, ensuring the panels stay secure even in high-traffic or outdoor environments.
Using the correct screw size is the key to a smooth, secure, and professional result. Original GRC board accessories are designed to speed up the installation process through their practical countersunk feature, saving you time and effort during the finishing stage.
Don't let the wrong hardware ruin your project. Ensure your installation is sturdy by matching your screw type to your board thickness.
Need expert advice for your project? Consult now with the GRC board expert team by clicking the WhatsApp feature on this website!
The Aesthetic Blend of GRC board at Salim Kamil Mosque, Jagakarsa
The Jagakarsa area in South Jakarta has recently welcomed a striking new landmark for the Muslim community The Jagakarsa area in South Jakarta now has a new place of worship for Muslims that is attracting attention. The Salim Kamil Mosque is a mosque project initiated by a public figure in collaboration with a visionary architect. It features a modern and contemporary architectural style.
Located on Jalan Nangka, Jagakarsa, this mosque serves as both a serene place of worship and a source of architectural inspiration. One of its most captivating features is its soaring, circular structure. Unlike conventional mosques that typically feature a large central dome, Salim Kamil adopts a minimalist aesthetic with clean, bold lines that maintain a sense of grace and softness.
The Secret Behind the Sturdy Circular Facade
To achieve a precise and durable circular form, the mosque utilizes GRC board as its primary facade foundation. This material was specifically chosen for its exceptional resistance to extreme weather and high humidity—essential factors for outdoor structures in Jakarta.
To give it an artistic and natural finishing touch, the GRC board is finished with rough cement. This combination offers several advantages:
- Enhanced Protection: The textured finish provides an extra layer of durability for the walls.
- Modern Aesthetic: The chosen gray palette delivers a minimalist, calm, and elegant impression that perfectly complements the building's shape.
Redefining Sacred Spaces
The Salim Kamil Mosque proves that a place of worship can embrace modernism without losing its sacred essence. The versatility of GRC board empowers architects to explore complex geometric shapes that would be difficult to achieve with traditional masonry.
Whether you are planning a public building, a modern office, or a private residence, the combination of GRC board and textured finishing can elevate your project's design.
Ready to bring your architectural vision to life? Consult with the GRC board expert team today via the WhatsApp feature on this website for professional guidance on your next project!
How to Paint Exterior GRC Boards for Maximum Durability and Longevity
Exterior applications present unique challenges, primarily due to direct exposure to sunlight and heavy rainfall. These conditions can fluctuate between extreme dryness and high humidity. Therefore, it is essential to use high strength, high quality materials for exterior building projects. Additionally, employing the correct painting method is vital to providing maximum protection for the building's façade.
Why Special Care is Needed
GRC boards have a high cement content, which makes them naturally alkaline. If GRC boards are painted directly without a protective base layer, the alkalinity can cause the paint to discolor or peel. To avoid this, the choice of paint is critical; you must use products specifically designed for cement-based materials.
Step by Step Guide for Painting Exterior GRC Boards
- Surface Preparation : Ensure the GRC board surface is completely clean, free of dust, and bone-dry. Never begin painting while the board is still damp, as moisture trapped inside can lead to future coating failure.
- Handling Joints : For outdoor installations, use GRC Putty Flex Plus for the joints between boards. Ensure that the jointing compound is sanded flush with the surface of the cement board to create a seamless finish.
- Apply a Primer (Sealer) : This is the most frequently overlooked step. Before applying the topcoat, apply a primer to neutralize the pH of the cement board. This allows the main paint to adhere properly. A water based primer is recommended, as it penetrates the pores of the cement board more effectively.
- The Topcoat Process Use specialized fiber cement paint or high-quality weather resistant exterior paint (weather shield). Apply at least two coats, or until the color is perfectly even and the surface is fully saturated.
The secret to a long lasting exterior GRC board finish lies in the combination of a high quality primer and specialized exterior paint. By following these steps, your building’s facade will remain vibrant and protected against extreme weather for years to come.
For the best results, always choose authentic products with the GRC Board brand printed on the panel. Don't settle for less, GRC Board is the expert in cement boards.
GRC board Series Decking Indoor and Outdoor Flooring That Resists Weathering
Many homeowners and cafe owners prefer flooring with a natural wood look to enhance the aesthetic and atmosphere of their spaces. While commonly used for outdoor areas like gardens and balconies, wood-look flooring is increasingly popular for indoor settings, such as living rooms and cafe interiors.
However, natural wood materials require extensive maintenance because they are susceptible to wear and tear over time. Exposure to damp environments can lead to mold growth, which compromises the material's integrity and significantly increases long-term repair and maintenance costs. For those seeking an alternative to solid wood decking, a more durable solution is needed.
To address these challenges without sacrificing natural aesthetics, GRC Board Deck Series is the ideal solution. These cement-based boards are engineered for superior durability, making them sturdier and more resistant to damage than traditional wood for both indoor and outdoor decking.
The GRC Board Deck Series is available in three versatile options:
- GRC Super Deck: Features a smooth, modern surface.
- GRC Mahogany Deck: Provides a realistic wood grain texture for a classic look.
- GRC Mahogany Deck Interlock: Designed for seamless installation with a beautiful wood-textured finish with an interlock installation system.
The base color of the GRC Deck Series is cement gray, allowing you to paint it according to your personal taste. For the best results, we recommend using specialized fiber cement paint. Thanks to its water-resistant, termite-proof, mold-resistant, and weather-resistant properties—along with an anti-slip surface—your flooring will remain in excellent condition for years to come.
Don't settle for less—choose the expert in cement boards. Contact us now by clicking the WhatsApp icon on this page to consult your building material needs directly with our experts. Make the right choice with GRC board.