Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your BLANCO PERFORMA CASCADE SILGRANIT Undermount Kitchen Sink. The PERFORMA CASCADE sink features a spacious single bowl design with an integrated second level for drying, depositing, and draining, and includes a stainless steel mesh colander. Constructed from SILGRANIT, a patented granite composite material, this sink is engineered for durability, offering resistance to heat, scratches, stains, chips, and impacts. Its non-porous, hygienic surface repels liquids and residue, ensuring easy cleaning and long-lasting performance.
Please read these instructions carefully before installation and use to ensure optimal performance and longevity of your sink.
Setup and Installation
The BLANCO PERFORMA CASCADE sink is designed for undermount installation. Due to the nature of undermount sinks and the materials involved, professional installation is highly recommended to ensure proper sealing, support, and alignment with your countertop.
Pre-Installation Checks:
- Inspect the Sink: Before installation, carefully inspect the sink for any damage or manufacturing defects. Do not install a damaged sink.
- Verify Dimensions: Confirm that the sink dimensions (32.00 x 19.50 x 10.00 inches) are compatible with your cabinet and countertop cutout. The bowl depth is 10 inches and 7-3/4 inches for the cascade area.
- Plumbing Preparation: Ensure your plumbing system is ready for an undermount sink, especially considering the deep bowl. Adjustments to drainpipe height may be necessary to ensure proper drainage and accommodate a garbage disposal if used.
- Countertop Material: This sink is suitable for various countertop materials, including granite, quartz, and solid surfaces.
Installation Steps (Overview):
- Prepare Countertop: The countertop opening must be precisely cut according to the provided template (not included in this manual, typically with the sink packaging).
- Apply Sealant: Apply a continuous bead of silicone sealant around the perimeter of the sink flange that will contact the underside of the countertop.
- Position Sink: Carefully lift and position the sink under the countertop opening, ensuring proper alignment.
- Secure Sink: Use the provided mounting clips and hardware to secure the sink firmly to the underside of the countertop. Tighten evenly to create a watertight seal.
- Connect Plumbing: Install the drain assembly (3-1/2 inch drain width) and connect to your household plumbing. If installing a garbage disposal, follow the manufacturer's instructions.
- Install Faucet: Install your chosen faucet into the pre-drilled hole (1 hole count) on the sink or countertop, following the faucet manufacturer's instructions.
- Cure Sealant: Allow the sealant to cure completely before using the sink, as per the sealant manufacturer's recommendations.

Image: Top-down view of the BLANCO PERFORMA CASCADE SILGRANIT Undermount Kitchen Sink, showing overall dimensions of 32 inches width and 19.5 inches depth, with a main bowl width of 21.25 inches and a cascade area width of 8 inches. The main bowl depth is 10 inches and the cascade area depth is 7.75 inches.
Operating Instructions
Your BLANCO PERFORMA CASCADE sink is designed for everyday kitchen tasks, offering both functionality and durability.
Using the Sink:
- General Use: The large single bowl accommodates oversized pots, pans, and baking sheets, making dishwashing easier.
- Cascade Area: Utilize the integrated cascade area for temporary placement of items, rinsing small produce, or draining utensils.
- Heat Resistance: The SILGRANIT material is heat resistant up to 536°F (280°C). Hot pots and pans can be placed directly on the sink surface without causing damage.
- Scratch Resistance: The robust granite composite material is highly scratch-resistant, making it suitable for daily kitchen activities involving sharp objects.
Using the Stainless Steel Colander:
- The included stainless steel colander fits perfectly into the sink's cascade area or can be placed over the main bowl.
- Use it for hands-free rinsing of fruits, vegetables, or small kitchen tools.
- It can also serve as a temporary drying rack for delicate items.
Care and Maintenance
Maintaining your BLANCO SILGRANIT sink is simple due to its durable and non-porous surface. Regular cleaning will preserve its appearance and hygienic properties.
Daily Cleaning:
- Wipe Down: After each use, wipe the sink with a soft cloth or sponge and mild dish soap. Rinse thoroughly with water.
- Drying: For best results and to prevent water spots, especially in hard water areas, dry the sink with a soft cloth after rinsing.
- Stain Resistance: The SILGRANIT material is highly stain-resistant. Most stains, including those from coffee, tea, or red wine, can be easily wiped away.
Deep Cleaning (as needed):
- For stubborn marks or mineral deposits (calcification), use a non-abrasive cleaner specifically designed for granite composite sinks, such as BLANCOCLEAN Daily Silgranit Sink Cleaner.
- Apply the cleaner with a soft sponge, gently scrub, and then rinse thoroughly.
- Avoid using harsh chemicals, abrasive pads, steel wool, or strong acids/alkalis, as these can damage the sink's surface.
Colander Care:
- The stainless steel colander is dishwasher safe for easy cleaning.
- Alternatively, wash with warm soapy water and rinse thoroughly.

Image: BLANCOCLEAN Daily Silgranit Sink Cleaner, recommended for maintaining the sink's surface.
Troubleshooting
Here are some common issues and their potential solutions for your kitchen sink.
| Problem | Possible Cause | Solution |
|---|---|---|
| Water spots or mineral buildup | Hard water deposits. | Wipe the sink dry after each use. For existing buildup, use a mild descaling agent or BLANCOCLEAN cleaner. |
| Dull appearance | Residue from soap or food, lack of regular cleaning. | Clean thoroughly with mild dish soap and a soft sponge. For a deeper clean, use BLANCOCLEAN. |
| Slow drainage | Partial clog in the drain or plumbing. | Remove the drain stopper and clear any visible debris. Use a plunger or a drain snake for deeper clogs. If the problem persists, consult a plumber. |
| Leakage around drain or faucet | Improperly sealed connections or loose fittings. | Check all connections for tightness. Reapply plumber's putty or silicone sealant if necessary. If unsure, contact a professional plumber. |
For issues not covered here or if problems persist, please contact BLANCO customer support or a qualified professional.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | BLANCO |
| Model Number | 440064 |
| Color | Anthracite |
| Material | Granite Composite (SILGRANIT) |
| Product Dimensions (D x W x H) | 19.5"D x 32"W x 10.37"H (Overall) |
| Bowl Depth | 10 inches (main bowl), 7-3/4 inches (cascade area) |
| Drain Width | 3-1/2 inches |
| Hole Count | 1 (for faucet) |
| Installation Type | Undermount |
| Included Components | Performa Silgranit II Cascade Sink, Stainless Steel Colander |
| Item Weight | 45 Pounds |
| Heat Resistance | Up to 536°F (280°C) |
| Hygienic Properties | Patented Hygienic Plus formula protects against bacteria and dirt. |
Warranty Information
The BLANCO PERFORMA CASCADE SILGRANIT Undermount Kitchen Sink comes with a Limited Lifetime Manufacturer Warranty. This warranty covers defects in material and workmanship under normal use and service. For specific terms, conditions, and to register your product, please refer to the official BLANCO website or contact their customer service directly. Keep your proof of purchase for warranty claims.
Support and Contact
For further assistance, product registration, or to explore additional BLANCO products and accessories, please visit the official BLANCO website or contact their customer support.
Official BLANCO Store: Visit the BLANCO Store on Amazon
You can also find more information and support resources on the BLANCO corporate website.
Product Video: SILGRANIT Production
Video: This video showcases the production process of BLANCO SILGRANIT sinks, highlighting the innovation, science, and craftsmanship involved in creating this durable and functional material. It demonstrates how granite is engineered into a moldable material that retains its strength and beauty, and how the sinks are manufactured in Canada.