Table of Content

  1. Introduction
  2. Understanding the Importance of Waterproofing Masonry and Brickwork
  3. Techniques for Waterproofing Masonry and Brickwork
  4. Best Products for Effective Waterproofing
  5. DIY Tips for Masonry and Brickwork Waterproofing
  6. Technical Table on Waterproofing Products
  7. Quote
  8. Tweet
  9. Customer Testimonial
  10. FAQs
  11. Conclusion
  12. References


Waterproofing masonry and brickwork is a topic that resonates with homeowners, architects, and builders alike. Masonry and brickwork, with their timeless appeal and durability, have been the cornerstone of construction for centuries. However, like all materials, they are susceptible to the elements. Water, in particular, can be a silent adversary, causing damage that might remain unseen until it’s too late. This article aims to shed light on the importance of waterproofing these structures, the techniques available, and the products that can ensure longevity. As we delve deeper, readers will gain insights into the nuances of protecting their masonry and brickwork, ensuring that these structures remain as steadfast as the day they were built. Whether you’re a homeowner looking to protect your investment, an architect aiming to design resilient structures, or a builder seeking the best materials for your project, this guide will serve as a comprehensive resource.

Understanding the Importance of Waterproofing Masonry and Brickwork

Masonry and brickwork, while robust and aesthetically pleasing, are porous materials. This means they can absorb water, making them vulnerable to a host of issues if not adequately protected. The importance of waterproofing these structures cannot be overstated.Firstly, water ingress can lead to structural damage. As water seeps into the masonry or brickwork, it can freeze during colder months. The expansion of frozen water can cause cracks, compromising the structural integrity. Over time, these cracks can widen, leading to significant repair costs.Secondly, moisture promotes mold and mildew growth. These fungi can not only degrade the appearance of the masonry but can also pose health risks to the inhabitants. Mold spores can lead to respiratory issues and allergies.Additionally, water damage can lead to efflorescence, where soluble salts within the masonry are brought to the surface by water. This results in unsightly white deposits that can be challenging to remove.

Techniques for Waterproofing Masonry and Brickwork

  • Surface Preparation: Ensuring the surface is clean and free from dirt, debris, and old paint is the first step. This ensures a seamless application of waterproofing products.
  • Water Repellents: Directly applied to the surface, these create a hydrophobic layer, effectively repelling water and preventing absorption.
  • Integral Waterproofing: Admixtures are added directly to the masonry mix, making the masonry inherently resistant to water from the get-go.
  • Cementitious Waterproofing: This involves applying a mix of cement combined with other waterproofing materials, much like plaster, directly onto the surface.
  • Liquid Membranes: These can be sprayed or rolled on and form a rubber-like coating upon drying, providing a robust barrier against moisture.
  • Sheet Membranes: Rolled onto the surface, these provide a physical barrier against water, ensuring no seepage.
  • Crystalline Waterproofing: Chemicals react with the components of masonry, forming crystals that block the pores, preventing water ingress.
  • Vapor Barriers: Installed on the exterior of masonry walls, these act as shields, preventing moisture from permeating the interiors.
  • Drainage Systems: These systems channel water away from the structure, reducing the hydrostatic pressure on walls and preventing water accumulation.

Best Products for Effective Waterproofing

  • Silane/Siloxane Sealers: Penetrating sealers that protect the surface without altering its appearance, ensuring a natural look.
  • Elastomeric Coatings: Resembling rubberized paint, these bridge cracks and provide a comprehensive waterproof barrier.
  • Acrylic Coatings: Ideal for above-ground applications, these are UV resistant and allow the masonry to breathe.
  • Polyurethane Sealants: Known for their flexibility and durability, these are resistant to weather and UV rays.
  • Bituminous Coatings: Asphalt-based products ideal for below-ground masonry, providing a robust barrier against moisture.
  • Cementitious Waterproofing Products: Combining cement, sand, and specific chemicals, these are easy to mix and apply.
  • EPDM Membranes: Made of synthetic rubber, these boast high resistance to UV and ozone.
  • Bentonite Clay Waterproofing: Utilizing natural clay, which expands when wet, this method effectively seals off water.
  • TPO and PVC Membranes: Typically used in roofing, these are resistant to a range of environmental factors.
  • Crystalline Waterproofing Admixtures: Added during the mixing of concrete, these enhance the waterproof properties of masonry.

DIY Tips for Masonry and Brickwork Waterproofing

Waterproofing masonry and brickwork is crucial for the longevity of any structure, and with the right approach, it can be a rewarding DIY project. Before diving in, it’s essential to understand that preparation is key. Start by thoroughly cleaning the surface, removing any dirt, moss, or old paint. This ensures that the waterproofing product adheres properly. If you come across any cracks or damages, repair them using a suitable filler or sealant. Once the surface is ready, choose the right waterproofing product. Water repellents, for instance, are easy to apply and create a hydrophobic layer that repels water. For those looking for a more robust solution, consider cementitious waterproofing, which involves applying a mix of cement and other waterproofing materials. Always follow the manufacturer’s instructions when applying any product. It’s also a good idea to test a small, inconspicuous area first to ensure the product works as expected and doesn’t alter the appearance of the masonry or brickwork adversely. Remember to allow sufficient drying time between coats and before exposing the surface to rain. Lastly, always prioritize safety. Wear protective gloves, eyewear, and ensure the working area is well-ventilated. With patience and attention to detail, you can effectively waterproof your masonry and brickwork, ensuring protection against the elements and enhancing the lifespan of your structure.

Technical Table on Waterproofing Products

Waterproofing is a critical aspect of construction, ensuring the longevity and durability of structures. The market offers a plethora of waterproofing products, each tailored for specific applications and environments. These products range from liquid membranes to cementitious mixtures, each with its unique properties and application methods. Selecting the right product is crucial, as it determines the effectiveness of the waterproofing process. It’s essential to consider factors like the type of surface, environmental conditions, and expected wear and tear. The following technical table provides a concise overview of various waterproofing products, their primary components, and typical applications.

Technical Table on Waterproofing Products

Product Name Primary Component Application Method Suitable Surfaces Drying Time
Liquid Membrane Polymer-based Spray/Roll-on Concrete, Masonry 24 hours
Cementitious Coating Cement Trowel/Brush Masonry, Concrete 48 hours
Bituminous Coating Asphalt Brush/Roller Foundations, Basements 72 hours
Silane/Siloxane Sealer Silane/Siloxane Spray-on Brick, Stone 12 hours
EPDM Membrane Synthetic Rubber Adhesive/Heat Welding Roofs, Terraces N/A
Bentonite Clay Panel Natural Clay Adhesive Below-grade structures N/A



“Waterproofing is not just a process; it’s a shield against nature’s unpredictability, ensuring our structures stand tall and strong.” – James A. Foster, Architectural Expert


“Exploring the world of #Waterproofing today. It’s amazing how the right techniques and products can protect our homes and buildings from the elements. Every structure deserves this shield!  #MasonryProtection #BrickworkShield”

Customer Testimonials

“I recently used AGW Trading’s waterproofing products for my ancestral home’s brickwork. The transformation was incredible. Not only did it protect the structure from rain, but it also gave the bricks a rejuvenated look. Highly recommend their products and expertise!” – Caroline Thompson

“Water damage used to be a constant worry for our basement. Thanks to AGW Trading’s expert solutions, those days are behind us. Their team guided us through the entire process, ensuring our masonry was well-protected. Truly a game-changer!” – Rajesh Kumar


What is the primary purpose of waterproofing masonry and brickwork?

Waterproofing masonry and brickwork is essential to protect structures from water damage, which can lead to deterioration, mold growth, and structural instability. By applying a waterproof barrier, you prevent water from penetrating the masonry, thereby extending the life of the structure and maintaining its aesthetic appeal. It’s not just about keeping water out; it’s about preserving the integrity of the building for years to come.

How often should I reapply waterproofing products?

The frequency of reapplication depends on the type of product used and the environmental conditions the structure is exposed to. Generally, most waterproofing products last between 5 to 10 years. However, it’s essential to regularly inspect the surface for signs of wear or damage. If you notice any deterioration or if the water repellency seems reduced, it might be time for a touch-up or reapplication.

Can I apply waterproofing products to painted masonry or brickwork?

Ideally, waterproofing should be applied to clean, unpainted surfaces for optimal adhesion. If the masonry or brickwork is already painted, you’ll need to remove the paint or ensure it’s in good condition. Some waterproofing products can adhere to certain types of paint, but it’s always best to consult the product’s guidelines or seek professional advice to ensure compatibility and effectiveness.

Are there any environmental concerns associated with waterproofing products?

Many modern waterproofing products are formulated to be environmentally friendly. However, it’s essential to choose products that are low in volatile organic compounds (VOCs) and are non-toxic. Always read the product label, and if possible, opt for products that have environmental certifications. Proper application and disposal methods also play a role in minimizing environmental impact.

Do I need a professional to waterproof my masonry, or can I do it myself?

While many homeowners take on waterproofing as a DIY project, it’s crucial to understand the product’s application process and the specific needs of your structure. If you’re confident in your abilities and have done thorough research, you can attempt DIY waterproofing. However, for larger projects or if you’re unsure, it’s always best to consult or hire a professional to ensure the job is done correctly and safely.


Waterproofing masonry and brickwork is more than just a protective measure; it’s an investment in the longevity and health of a structure. With the right products and techniques, buildings can stand resilient against the harshest of weather conditions. As we’ve explored, the benefits are manifold, from preventing mold growth to maintaining aesthetic appeal. Whether you’re considering a DIY approach or seeking professional assistance, always prioritize quality and safety. Remember, the foundation of any lasting structure is its ability to resist the test of time and elements.