How To Get Mortar Film Off Bricks

How to Get Mortar Film Off Bricks: A Comprehensive Guide

Mortar film, that unsightly residue left behind after bricklaying, can significantly detract from the beauty of your newly constructed or renovated brickwork. Getting rid of it efficiently and effectively is crucial for achieving a professional-looking finish. This guide will walk you through several methods for removing mortar film from bricks, ensuring your project looks its best. We'll cover everything from choosing the right tools to understanding the best techniques for different brick types and mortar strengths.

Understanding Mortar Film and its Removal Challenges

Mortar film is essentially dried mortar that adheres to the brick surface during the construction process. Its removal can be challenging due to its tenacious grip, especially when it's allowed to cure completely. The difficulty also depends on the type of mortar used (cement-based mortars are generally harder to remove than lime-based mortars), the porosity of the bricks, and the weather conditions during the cleaning process. Improper removal can damage the brick surface, so careful consideration is key.

Essential Tools and Materials

Before you begin, gather these necessary supplies:

• Stiff-bristled brush: A durable brush is crucial for scrubbing away the mortar film. A wire brush might be necessary for stubborn residue, but use caution to avoid scratching the brick surface.
• Bucket: For mixing cleaning solutions.
• Spray bottle: For applying cleaning solutions evenly.
• Cleaning solution: The choice depends on the severity of the film and the type of brick. Options include water, diluted muriatic acid (use with extreme caution!), and commercial brick cleaners.
• Sponge: For rinsing and wiping.
• Garden hose or pressure washer: For rinsing the cleaned surface. A pressure washer can be highly effective, but use low pressure to avoid damaging the bricks.
• Safety glasses and gloves: Essential for protecting your eyes and skin, especially when using chemical cleaners.

Methods for Removing Mortar Film

Here are several effective methods, starting with the gentlest:

1. Water and a Stiff Brush: This is the first approach you should try. Simply wet the brick surface with water, then scrub vigorously with the stiff-bristled brush. Rinse thoroughly with water and repeat as necessary. This method works best for fresh mortar film.

2. Commercial Brick Cleaners: Many commercially available brick cleaners are designed specifically to remove mortar haze. Follow the manufacturer's instructions carefully, paying attention to dilution ratios and application methods. Remember to always test a small, inconspicuous area first to check for any adverse reactions.

3. Muriatic Acid (Hydrochloric Acid): Caution! This is a powerful acid and should only be used as a last resort and with extreme caution. Always wear safety glasses and gloves. Mix the acid with water according to the manufacturer's instructions (typically a 1:10 ratio of acid to water). Apply the solution sparingly and allow it to dwell for a short time before scrubbing with a brush and rinsing thoroughly. Muriatic acid is highly corrosive and can damage both brick and surrounding materials if mishandled. Proper ventilation is crucial.

4. Pressure Washing: A pressure washer can be very effective, especially for large areas. However, use low pressure to avoid damaging the bricks. Always test a small area first. Maintain a safe distance from the brick surface to prevent etching or damage.

Post-Cleaning Care

After cleaning, allow the bricks to dry completely. Consider applying a sealant to protect the cleaned surface from future staining and weathering.

Choosing the Right Method

The best method depends on several factors:

• Age of the mortar film: Fresh film is easier to remove than cured film.
• Type of mortar: Cement-based mortars require more aggressive cleaning methods than lime-based mortars.
• Type of brick: Porous bricks might be more susceptible to damage from harsh chemicals.
• Severity of the film: Light film can often be removed with water and a brush, while heavier film may require stronger solutions.

By following these steps and choosing the appropriate method, you can effectively remove mortar film from your bricks, enhancing the overall appearance of your project. Remember safety is paramount; always wear appropriate protective gear and follow manufacturer instructions carefully.