INSTALLATION GUIDELINES
Gresbond is an advanced bonding solution designed to enhance the installation of large-format porcelain pavers, ensuring superior adhesion and durability. It is specifically formulated to optimize porcelain paver installations over concrete surfaces, providing a reliable and efficient solution for professional hardscape applications.
One bag of Gresbond, when mixed at a 1:1 ratio with sand, covers approximately 14 square feet using a 1-inch thick bedding layer (recommended). This optimized mixture ensures proper support, stability, and long-term performance for porcelain paver installations.
APPROXIMATE YIELD PER 50 LB. BAG WHEN NOT MIXED WITH SAND.
When mixing Gresbond with paver sand, a cement mixer must be used to ensure thorough and consistent blending. This step is crucial for achieving the proper mix consistency, allowing the product to perform effectively and provide optimal adhesion and stability for porcelain paver installations.
After mixing sand with Gresbond, our dry lay installation guidelines must be followed. It is important to note that the mixture of sand and Gresbond is a dry mix, and no water should be added during the mixing process. Proper adherence to these guidelines ensures optimal performance and stability for porcelain paver installations.
For driveway installations, ensure that the base consists of 4 to 6 inches of compacted road rock. The base must be compacted to 96% density to provide a stable and durable foundation for the porcelain pavers. Proper compaction is essential to prevent shifting, settling, and long-term structural issues.
96% compaction refers to a dry density measurement indicating that the soil or base material has been compacted to 96% of its maximum possible density. This measurement is determined through a Proctor compaction test, a laboratory analysis that evaluates the relationship between soil density and moisture content. Ensuring 96% compaction is critical for maintaining the structural integrity and longevity of the installation, particularly for driveways and high-traffic areas.
When installing over a concrete base, ensure that the concrete is at least 4 inches thick to provide adequate structural support. Before applying the Gresbond/sand bedding layer, dampen the concrete surface to enhance adhesion and prevent premature moisture absorption, which could affect the stability of the installation.
Activating the Gresbond/Sand Mix – Essential Watering Guidelines
After completing Hardscape.com’s dry installation process for porcelain pavers, the activation of the Gresbond/Sand mix is a critical step to ensure the stability and performance of the installation. Proper hydration of the mix is essential to achieving the required bond strength.
Below is a Standard Watering Time Chart to guide you in determining the appropriate amount of water needed based on the length of the shortest side of the largest paving unit and the average depth of the GRESBOND.
Standard Watering Times (Minutes) Per 100 Square Feet
- Ensure an even and consistent water application across the entire surface.
- Start watering from the lowest point of the project.
- Do not overwater, as excessive moisture may affect the bonding performance.
- Use a gentle spray or fine mist setting to avoid disturbing the bedding material.
(Refer to the provided chart for exact watering times based on paver dimensions and overlay depth.)d (for your paving unit size and Gresbond depth).
By following these guidelines, you will maximize the effectiveness of Gresbond and ensure a long-lasting, high-performance porcelain paver installation.
For Example:
Length of Shortest Side of the Largest Paving Unit: 12”
Average Depth of Gresbond: 1/4”
Time in Minutes (found in chart): 15 minutes per 100 sf
Total Square Footage of Project: 1200 (divide that by 100) = 12
Calculation: 15 minutes x (1200 total sf/100) = 180 Total Minutes of Watering Time (15×12= 180)
Verify Gresbond activation by lightly tapping with a rubber mallet on several paving units throughout the project. Gresbond is not fully activated if
it sounds hollow, and it will require additional wetting. Grout can be installed 24 hours after Gresbond activation per manufacturer’s directions.
CLEAN UP: Remove any wet Gresbond from surfaces with a damp rag or wet brush before it dries. Clean tools with water and brush.
CURING: Open to foot traffic after 24 hours and vehicular traffic after 7 days. Full cure is 28 days.
PRECAUTIONARY INFORMATION:
DANGER!
- May cause cancer through chronic inhalation
- Causes severe skin burns and serious eye damage
- May cause an allergic skin reaction
- Causes damage to lungs through prolonged or repeated inhalation
- May cause respiratory irritation
PRECAUTIONARY STATEMENTS: KEEP OUT OF REACH OF CHILDREN
• Do not handle until all safety precautions have been read and understood
• Wear impervious gloves, such as nitrile
• Wear eye protection and protective clothing
• Do not eat, drink or smoke when using this product
• Wash thoroughly after handling
• Use only in a well-ventilated area
• Do not breathe dust
EMERGENCY & FIRST AID MEASURES:
IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
IF INHALED: Remove person to fresh air and keep comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
IF ON SKIN (OR HAIR): Remove immediately all contaminated clothing and
wash before reuse. Rinse skin or hair with water.
IF SIGNIFICANT SKIN IRRITATION OR RASH OCCURS: Get medical advice or attention. Immediately seek medical advice or attention if symptoms are significant or persist.
STORAGE: Store indoors in a dry place. Keep the bag sealed in good condition.
SHELF LIFE: 12 months
DISPOSAL: Dispose of in accordance with all applicable laws and regulations.
CONTAINS: Sand, Silica, Quartz CAS # 14808-60-7, Portland Cement CAS # 65997-15-1
ADDITIONAL INFORMATION (PLEASE READ): The Portland cement in this product can cause serious, potentially irreversible damage to skin, eye, respiratory and digestive tracts due to caustic burns. Burns from Portland cement may not cause immediate pain or discomfort. You cannot rely on pain to alert you to cement burns. Therefore, precautions must be taken to prevent all contact with Portland cement. Cement burns can become worse even after contact has ended. If there is contact with this product, immediately remove all product from body and thoroughly rinse with water. If you experience or suspect a cement burn or inflammation, you should immediately see a health care professional. Skin burns and irritation may be caused by even brief exposure. Interaction of Portland cement with water or sweat releases a caustic solution which produces burns or irritation. Any extended exposure should be treated as though a burn has occurred until determined otherwise. Skin contact with Portland cement can also cause an inflammation of the skin called dermatitis. Signs and symptoms can include itching, redness, swelling, blisters, scaling, and other changes in the normal condition of the skin. Signs and symptoms of burns include the above and whitening, yellowing, blackening, peeling or cracking of skin. The Portland cement in this product may cause allergic contact dermatitis in sensitized individuals. This overreaction of the immune system can lead to severe inflammation. Sensitization may result from a single exposure to the low levels of Cr (VI) in Portland cement or repeated exposures over months or years. Sensitization is long lasting, and after sensitization, even very small quantities can trigger dermatitis. Sensitization is uncommon. Individuals who experience skin problems, including seemingly minor ones, are advised to seek medical attention. Respirable Crystalline Silica (RCS) may cause cancer. Sand and gravel contain varying quantities of quartz (Crystalline Silica). Sand and gravel may be subjected to various natural or mechanical forces that produce small particles (dust) which may contain Respirable Crystalline Silica (particles less than 10 micrometers in aerodynamic diameter). Repeated inhalation of Respirable Crystalline Silica (quartz) may cause lung cancer according to IARC and NTP; ACGIH states that it is a suspected cause of cancer.
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov