Karnak - Kanopy 799 Wash-N-Prep, 1qt

A powerful, professional-grade liquid cleaner, Karnak 799 Wash‑N‑Prep offers an efficient, non-phosphate alternative for preparing diverse roofing surfaces. Formulated to dissolve and lift away oils, embedded grime, and residual residues, this cleaner ensures maximum surface adhesion and performance for subsequent coatings—whether you're working on metal, asphalt, foam, TPO, PVC, or concrete.

Key Features

• Concentrated cleaner with powerful degreasing performance for roof preparation
• Phosphorous-free formula, safer and more environmentally friendly than traditional TSP
• Ready-to-use in quart size; ideal for spot jobs or small-scale surface prep
• Suitable for a broad range of surfaces including metal, asphalt, foam, PVC, and concrete

Packaging: 1-quart bottle

Dilution ratios: heavy-duty cleaning at 16 oz per gallon; general cleaning at 8 oz per gallon; use full strength with pressure washer detergent reservoir

pH: approximately 10.0 to 11.0 (alkaline)

VOC content: 0 g/L (maximum)

Pleasant citrus scent; water-rinsable and fast-evaporating

• Wear appropriate protective gear—gloves and eye protection—and consult the product label and SDS before application.
• Pressure washer use: Add the cleaner full strength to the detergent reservoir or insert the siphon from the quart bottle. Adjust injector ratio as needed (up to 16:1).
• No-pressure application: For heavy-duty cleaning, mix 16 oz of cleaner per gallon of water. For general cleaning, mix 8 oz per gallon.
• Apply using a stiff nylon brush, mop, or sponge; work from the bottom up to cover completely.
• Rinse the surface thoroughly with clean water and allow it to dry completely before applying any coating.
• Pre-wet adjacent plants before and after rinsing to minimize any potential effects. Vegetation is unharmed by runoff.
• Avoid allowing dirty cleaning solutions to dry on vertical surfaces like windows to prevent staining.

Q: What surfaces can I clean with this product?
A: It works on metal, asphalt, spray foam, TPO, PVC, concrete, and other similar roofing substrates.

Q: How should I dilute the product for use?
A: Use 16 oz per gallon of water for heavy-duty cleaning or 8 oz per gallon for general cleaning; for pressure washers, it can be used full strength.

Q: Do I need to rinse the surface?
A: Yes. Always rinse thoroughly with clean water and allow it to fully dry before any coating application.

Q: Is this product safe for plants and the environment?
A: Yes—it contains no phosphorous, is biodegradable, and its runoff won’t harm vegetation if plants are rinsed before and after use.

Q: What safety precautions should I follow?
A: Wear gloves and eye protection, avoid inhaling spray mist, follow SDS instructions, and clean up responsibly.