Description
CopperOut Pro is a specialist poultice that removes deep-set copper oxide staining from masonry surfaces. Water runoff from copper roofs, gutters, flashing, and decorative features often causes these distinctive blue-green stains. Over time, the copper penetrates deep into the stonework and leaves staining that standard surface cleaners cannot remove.
Unlike conventional cleaning products, CopperOut Pro draws copper contamination out of the pores of the masonry. Once applied, the poultice penetrates the stone, breaks down embedded staining, and lifts the contamination towards the surface.
After the dwell period, you can remove the partly dried poultice and dispose of the dissolved contaminants it contains. This process delivers a thorough clean while protecting the masonry beneath. The thick paste stays in place during treatment, even on vertical surfaces and detailed architectural features. It also helps reduce runoff and minimises environmental impact.
As a result, CopperOut Pro is ideal for both historic and modern buildings where preserving the stonework is important. When used correctly, it provides a safe, controlled, and highly effective way to restore masonry to its natural appearance without causing surface damage or discolouration.
Advantages and Limitations
CopperOut Pro offers several important advantages. Its thick poultice formula clings to vertical surfaces and intricate architectural details, ensuring consistent contact with the stained area. This allows the product to penetrate deeply into stubborn stains that have developed over many years and helps deliver even cleaning results.
The dried poultice traps dissolved contaminants, which reduces runoff and liquid waste. This makes disposal easier and helps minimise environmental impact.
Because CopperOut Pro targets copper oxide staining specifically, it delivers results that general-purpose masonry cleaners cannot match. It is particularly valuable for restoration projects where preserving the appearance and condition of historic stonework remains a priority.
However, CopperOut Pro does have limitations. It does not work as a universal masonry cleaner and will not remove every type of stain or general surface soiling.
Severe or deeply embedded staining may require multiple applications. As with any professional restoration treatment, always carry out a test patch before full application. Testing helps confirm compatibility with the masonry and allows you to determine the correct dwell time and application method.
Take care throughout the cleaning process and prevent waste material from entering drains, soil, or natural watercourses.
Preparation
Good preparation helps you achieve the best possible results with CopperOut Pro. It also protects the surrounding environment and improves site safety.
Start by inspecting the area around the stained masonry. Identify any nearby surfaces that may come into contact with the poultice or rinse water. This includes plants, grass, painted surfaces, glass, timber, and delicate decorative features.
Cover these areas with heavy-duty plastic sheeting or durable tarpaulins. Secure all coverings firmly so they remain in place throughout the treatment process.
You should also consider the weather before starting work. Avoid applying CopperOut Pro during windy conditions, as strong winds can spread the product beyond the treatment area. Likewise, postpone the work if rain is expected. Rain can wash away the poultice or dilute the product before it has time to work effectively.
For best results, apply CopperOut Pro in mild, dry conditions with little or no wind.
Safety Precautions
Before handling CopperOut Pro, make safety your top priority.
Always wear the correct personal protective equipment (PPE), including:
- Chemical-resistant gloves
- Safety goggles or a full-face shield
- Protective clothing, such as overalls
- A long-sleeved shirt and full-length trousers
These precautions help protect against accidental splashes and skin contact during application.
In confined spaces or poorly ventilated areas, you may also need respiratory protection to avoid inhaling fumes or airborne particles.
Next, secure the work area to prevent interruptions during treatment. If you are working in a public or shared space, use warning signs, cones, or temporary barriers to restrict access. Keep pedestrians, pets, and unauthorised persons away from the treatment area while the poultice remains wet or dries.
Finally, gather all required equipment before you begin. Essential tools include:
- A trowel for applying the poultice
- A low-pressure sprayer or hose for rinsing
- A non-ferrous or nylon-bristled brush for removing residue
- Heated water, if required, to improve rinsing efficiency
These preparation steps help protect the masonry, safeguard the surrounding area, and ensure a smooth and professional cleaning process.
Application Process:
Once the work area has been properly prepared and all safety measures are in place, you can begin applying CopperOut Pro. Following this process carefully will ensure that stains are effectively drawn out and that the masonry surface is restored to its best possible condition.
To start, use a clean plasterer’s trowel to apply a generous layer of CopperOut Pro directly to the stained masonry. The poultice should be spread evenly and should be approximately six millimetres, or a quarter of an inch, thick. This thickness allows the product to fully penetrate the surface and extract the dissolved copper oxide from within the masonry. Once the poultice is applied, it must be left undisturbed.
In most situations, the product should be left for eight to ten hours or until completely dry. The exact dwell time may vary depending on the severity of the stain, the porosity of the masonry, and environmental conditions. During this time, do not allow anyone to touch or interfere with the treated area.
After the poultice has dried, carefully remove it from the surface using a trowel or taping knife. When all the dried material has been removed, rinse the surface thoroughly with clean, fresh water. A low-pressure water sprayer is ideal for this step. If any residue remains, use a non-ferrous or nylon-bristled brush to gently scrub the surface. Never use wire or steel brushes, as these can damage the masonry.
Finally, allow the surface to dry completely before inspecting. If any staining remains, repeat the process as necessary. Some severe
stains may require multiple treatments to fully restore the surface.
Pretesting:
Before applying CopperOut Pro to the entire surface, it is essential to conduct a test application. This ensures compatibility with the masonry and helps determine the most effective method. Choose a discreet area of the surface, such as a hidden corner or behind a feature wall.
Apply CopperOut Pro as you would for the full job, maintaining the same thickness and technique. Allow it to dwell under similar environmental conditions, then remove and rinse the test area. Let the area dry completely before inspecting. Based on the results, you can determine the correct dwell time, whether multiple treatments will be needed, and any adjustments to your method.
Safety Guidelines:
CopperOut Pro is a professional-grade product and must be handled with care. Always wear PPE, including chemical-resistant gloves, safety goggles or a face shield, and protective clothing. In poorly ventilated areas, a respirator may be required.
If CopperOut Pro comes into contact with skin or eyes, rinse immediately with clean water. In the case of eye contact, flush continuously for at least fifteen minutes and seek medical attention if irritation persists. If ingested, do not induce vomiting; seek medical assistance immediately.
Keep bystanders, pets, and unauthorised personnel away from the work area using barriers, cones, or warning signs. Always review the Safety Data Sheet (SDS) before use for complete handling and first aid information.
Coverage and Packaging:
The amount of CopperOut Pro needed depends on the type of masonry, surface texture, and severity of staining. As a general guide, one kilogram will cover approximately 0.2 to 0.3 square metres. Highly porous or heavily stained surfaces may require more product.
CopperOut Pro is available in two container sizes: – 1 kg container – ideal for small spot treatments or minor staining. – 3 kg container – best for larger projects or extensive staining. Having extra product on hand is recommended for large jobs to ensure complete coverage without interruptions.
