Glass Fiber Reinforced Concrete (GFRC) is a durable and versatile material commonly used in architectural designs, such as facades, panels, and decorative features. It is specifically known for its longevity, combining the benefits of concrete with additional glass fiber reinforcement to make a product that is lighter weight and long lasting.
Still, every material in the architectural world is going to need maintenance, and while the needs are less than many competing materials, great upkeep ensures a preserved appearance and long term performance.
Getting Started
Before cleaning, it is important to understand the properties of GFRC, as they’ll affect the methods and solutions you use to clean it. GFRC has:
- Surface Durability – GFRC has a tough outer surface that resists damage, but abrasive cleaning methods can still harm its finish.
- Porosity – GFRC can absorb dirt and grime over time, especially if it’s not sealed, making regular cleaning important to prevent staining.
This means that, in order to better clean the materials, you’ll need a way to get into pores, but not with anything too abrasive that may otherwise damage the finish.
Tools and Materials Needed
To clean GFRC effectively without damaging its surface, gather the following materials:
- Soft-bristled brushes or microfiber cloths
- Mild, pH-neutral detergent or soap
- Low-pressure water sprayer or hose
- Non-abrasive sponge or scrubber
- Bucket with clean water
- Sealer (if needed for maintenance after cleaning)
Keep in mind that, for some projects, all you may need is a low pressure washer or a quick wipe to get rid of any built up grime. For the purposes of this article, we’ll assume that the stains and buildup are mor prominent, resulting in more thorough maintenance.
Step-by-Step Cleaning Process
The following is one way to approach cleaning architectural GFRC that you can use for a thorough, all over clean. If you would like specific help related to the designs of your property, you are welcome to reach out to your sales representative.
- Step 1: Inspect the Surface – Check for cracks, chips, or other damage before cleaning. Cleaning damaged areas can worsen structural issues, so repairs should be addressed first.
- Step 2: Remove Loose Debris – Use a soft-bristled brush or a low-pressure water sprayer to remove dirt, dust, and debris. Avoid using high-pressure washers, as they can damage the surface or the sealer.
- Step 3: Apply Cleaning Solution – Mix a mild, pH-neutral detergent with water. Avoid acidic or alkaline cleaners, as they can erode the surface or weaken the material over time. Apply the solution to the GFRC surface using a soft brush, sponge, or microfiber cloth, focusing on areas with visible stains or dirt buildup.
- Step 4: Gently Scrub the Surface – Use a soft, non-abrasive scrubber to remove dirt and stains. For textured or intricate surfaces, use a small brush to reach crevices without causing scratches.
- Step 5: Rinse Thoroughly – Rinse the surface thoroughly with clean water to remove all soap residues. Soap left on the surface can attract dirt and lead to discoloration over time.
- Step 6: Allow to Dry – Let the GFRC surface air dry completely. If water pooling occurs, gently wipe it away with a clean microfiber cloth to prevent streaking.
These steps are not going to be appropriate for all types of dirt. You may need to do a bit more, or possibly a bit less. Also, depending on the finish, GFRC could be easier or harder to clean. Thick paint over GFRC is going to be cleaned the same as any paint, which often responds well to simply a rinse. Nevertheless, using the above guidelines can help you with cleaning.
Other Maintenance for GFRC for Long-Term Performance
Cleaning is important to prevent stains, but there is bit more to maintaining GFRC in order to make sure that it lasts for a long time. Once again, keep in mind that every situation is different, but you may need to consider maintenance tasks such as:
- Seal the Surface – Applying a high-quality sealer to GFRC surfaces protects against moisture, stains, and weathering. Reapply the sealer as recommended by the manufacturer, typically every 3–5 years.
- Avoid Harsh Chemicals and Abrasives – Steer clear of acidic cleaners, bleach, or abrasive scrubbing tools that can damage the surface or compromise its protective seal.
- Address Stains Promptly – Remove stains as soon as they appear to prevent them from penetrating deeper into the material. Use a gentle cleaning solution and test it on a small area first.
- Inspect for Damage – Periodically inspect the GFRC for cracks, chips, or spalling. Address these issues promptly to prevent water infiltration and structural weakening.
- Salt Removal – In coastal areas, salt deposits can accumulate on GFRC. Rinse the surface frequently with fresh water to prevent salt buildup and corrosion of any embedded metal components.
GFRC is durable enough on its own to handle most environments, but because staining and buildup can occur, it is always a good idea to monitor the property for any issues. For example, if your GFRC is protected by paint, it may be worthwhile to make sure to address any paint loss quickly, as the paint can protect the GFRC from additional staining.
Protecting GFRC for Longevity
Regular cleaning and maintenance are key to preserving the beauty and performance of architectural GFRC. By using gentle cleaning techniques, applying protective sealers, and addressing issues promptly, you can ensure that GFRC elements maintain their structural integrity and aesthetic appeal for years to come. Proper care not only extends the life of GFRC but also enhances its ability to withstand the demands of various environments.