To use TSP to clean concrete, you will primarily mix it with water according to the recommended ratio and apply it using a brush or mop.
Trisodium Phosphate (TSP) is a heavy-duty cleaning agent commonly used for tough cleaning tasks on surfaces like concrete, especially to remove grease, grime, and mildew before painting or sealing.
Here's a breakdown of how to use TSP effectively and safely on concrete:
Preparing the TSP Cleaning Solution
The fundamental step is creating the correct mix. Based on standard recommendations for cleaning solutions:
- Mix: 2 Tablespoons of TSP for each gallon of water.
- Water Temperature: Preferably warm water. Warm water generally helps TSP dissolve better and enhances its cleaning power.
You can easily measure the ingredients and combine them in a bucket.
Step-by-Step Process for Cleaning Concrete with TSP
Follow these steps for effective cleaning:
- Prepare the Area: Clear the concrete surface of any furniture, debris, or loose dirt. Sweep or power wash the area to remove surface grime.
- Protect Surrounding Areas: TSP is a strong chemical and can harm plants or damage painted surfaces. Wet down nearby plants and cover anything you don't want the TSP solution to contact with plastic sheeting.
- Safety First: Always wear protective gear when working with TSP. This includes chemical-resistant gloves and eye protection (safety glasses or goggles). Ensure adequate ventilation if cleaning indoors or in a confined space.
- Mix the Solution: Combine 2 Tablespoons of TSP for each gallon of water in a bucket. Preferably use warm water for better results. Stir well to ensure the TSP dissolves completely.
- Test a Small Area: Before applying the solution to the entire surface, test it on a small, inconspicuous area. This helps ensure it won't damage the concrete or cause unexpected discoloration.
- Apply the Solution: Generously apply the TSP mixture to the concrete surface using a brush or mop. Work in manageable sections.
- Allow it to Dwell: Let the solution sit on the concrete for 15-20 minutes, allowing it to penetrate the stains and dirt. Do not let it dry out; reapply if necessary.
- Scrub the Surface: Use a stiff brush (like a scrub brush or push broom) to vigorously scrub the concrete, focusing on heavily stained areas.
- Rinse Thoroughly: This is a critical step. Rinse the concrete thoroughly with clean water, preferably using a garden hose with a strong nozzle or a power washer, to remove all traces of the TSP solution and the lifted dirt. Ensure runoff goes into a drain connected to a sewer system, not into storm drains that lead to natural waterways, as TSP can impact aquatic life.
- Allow to Dry: Let the concrete surface air dry completely before using it or applying any further treatments like paint or sealant.
By following these steps, you can effectively use TSP to tackle stubborn stains and grime on concrete surfaces. Remember to prioritize safety and proper disposal of the runoff.
