2383 CSR Poultice Additive is formulated for addition to the paste made from mixing 2381 Copper Stain Remover II and 2382 CSR Poultice to enhance the removal of deep-seated copper stains from masonry surfaces. 2383 aids in the removal of copper stains but also helps in the general cleaning of the surrounding masonry. 2383 is safe for use on unpolished surfaces. 2383 is mildly alkaline, low in odor, and can be used on exterior surfaces. 2383 is normally used at about 5-10% of the dry weight of 2382 CSR Poultice.

2383 CSR Poultice Additive should be mixed into the wet 2381 / 2382 paste with simple mixing. It is not necessary for the powder to visibly dissolve in the paste. Most of the 2383 will dissolve over time to give a slow release of the active materials to the poultice. Standard plasterers tools and mixing devices are customary for the preparation of the product and application to the surface. Protect all surfaces that are not to receive an application of 2383 containing poultice. Apply a test sample to the project surface to determine the suitability of the cleaner, acceptable application method, thickness and required dwell time to effect the desired cleaning.

Using a broad knife, trowel or other application method, apply a uniform layer of combined poultice to a thickness of 3/8 to 1/2 inch of product. Application method should ensure that there are no voids that will cause stains to remain in the surface. Before the poultice dries, cover the surface with a lightweight plastic sheet. Avoid air pockets when applying the plastic sheet. Air pockets may allow the poultice to dry prematurely. Allow the poultice to remain on the surface for 12 to 48 hours as determined by previous testing. If the poultice is very damp after removal of the plastic sheeting, allow the poultice to dry for several hours prior to removal.

2383 CSR Poultice Additive is for use by professional contractors only. Keep out of the reach of children. Application to surfaces that are below 50 degrees F may not react as expected. Usage at temperatures below 70 degrees F may require extended dwell times. Do not use when temperatures are expected to drop below 40 degrees F during the projected dwell time.

This product must be used only as directed. Safety matters included with product. MSDS available from your regional representative.

Factory personnel can be contacted at 800/860-4978 for specific recommendations without any obligation.

Factory trained regional representatives are available to assist with product recommendations for you projects, and many locations are served by dealers who stock ShoreBest products. Call 800/860-4978 for the name and location of your nearest representative or dealer.