Trisodium Phosphate
For a Thorough Clean Before Painting

Even if it's not necessary to sand or strip a surface, all dirt and grime must be removed. Trisodium Phosphate can remove dirt, grease, soap scum and many more surface contaminates and is probably the most powerful cleaner to use on walls and trim.

Trisodium phosphate, also known as TSP, will strip away many years worth of grime leaving a clean and etched surface to maximize the paints adhesion. Typical interior surfaces include painted walls, ceilings, wood trim and windows. Can also be used outside to clean siding and masonry surfaces.

TSP Mixing Instructions

Mix 1/4 cup per gallon of very warm water, for a super heavy-duty solution use 1/2 cup. Apply with a sponge and use a scrub pad for heavy deposits. Squeeze excess solution from the sponge and wash from the bottom up.

Allow the cleaning solution to sit on the surface for 1-2 minutes then rinse with warm water. Repeated rinsing might be necessary to remove all the contamination and cleaner. Pay attention to the mixing instructions on the box. Not all products are the same. Strengths can vary between the different manufactures.

If repeated rinsing isn't for you, try No-Rinse TSP instead. This formula isn't as strong as standard trisodium phosphate, but will do a good job at removing house hold grease and grime. The best part is no rinsing is required when used according to directions. No-Rince TSP great alternative for general cleaning where full strength products are not needed.

TSP Warnings and Precautions

Trisodium phosphate is a very strong cleaner and can cause burns when mixed according to directions. Wear rubber gloves, protective clothing and eye protection. Do not allow the trisodium phosphate solution to touch the skin or make contact with your eyes.

Skin contact: Wash with soap and water. If redness occurs, discontinue use.
Eye contact: Flood with plenty of water and seek medical attention promptly.

Strong trisodium phosphate solutions can discolor metals and degloss paint. Do not use on linoleum or similar surfaces. Use great care around stained wood as damage to the finish will occur. Protect adjacent surfaces with plastic and masking tape.