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Waterproofing for Painted Walls: 5 Reliable Methods That Truly Work

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Waterproofing Painted Walls | Birla Opus Paints

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Waterproofing your interiors is one of the smartest ways to extend the life of your walls, preserve the beauty of your home, and safeguard it from long-term moisture damage. 

Whether you’re renovating an older property or refreshing a newly designed space, understanding how to waterproof painted walls can make all the difference in your décor’s durability.

 

 

 

 

Table of Contents

 

  1. Why Waterproofing Painted Walls Matters
  2. Signs Your Painted Walls Need Waterproofing
  3. 5 Proven Methods to Waterproof Painted Walls
  4. Tips for Interior Paint Waterproofing
  5. Common Mistakes to Avoid
  6. Conclusion
  7. FAQs

 

 

Signs Your Painted Walls Need Waterproofing

 

 

 

 

Before you begin waterproofing painted walls, it’s crucial to identify early symptoms of moisture damage. 

 

  1. Wall damp patches: These patches typically appear as irregular, darker zones on your wall surface. They suggest trapped moisture pushing through the substrate, a clear signal that waterproofing painted walls is overdue.
  2. Bubbling or peeling paint: When moisture becomes lodged behind the painted film, air pockets form, leading to bubbling and eventual peeling. This indicates poor adhesion caused by internal dampness.
  3. Moisture smell: A persistent musty odour often hints at hidden moisture or mould growth. Left untreated, it can worsen indoor air quality and trigger respiratory discomfort.
  4. Discolouration: Yellow or brown stains spreading across walls indicate seepage or slow moisture absorption. These stains often worsen during monsoons or high humidity.
  5. Hairline cracks: Thin fractures allow moisture to enter the wall, gradually widening as dampness escalates. Even small cracks affect the longevity of interiors and must be addressed early.

 

Read More: After assessing your wall waterproofing needs, check out this guide on Wall Waterproofing: Types, Advantages, and How to Choose the Right One.

 

 

5 Proven Methods to Waterproof Painted Walls

 

These expert-backed solutions enhance wall durability and boost the performance of your interior paint waterproof system.

 

 

1. Apply a Waterproofing Sealant Over Paint


Using a sealant is one of the easiest ways to apply waterproofing over paint without stripping existing layers. Clear acrylic or polyurethane-based sealants form a transparent shield that repels moisture and strengthens the paint film. This method works best for mild dampness and general preventive care.

 

Our Recommendation: Birla Opus Alldry Total 2K is your all-time defence against dampness, confronting these issues head-on for a worry-free experience.

 

 

2. Use a Clear Silicone-Based Water Repellent


A silicone repellent penetrates deep into the surface, creating a hydrophobic barrier. It doesn’t alter the wall’s look, making it perfect for decorative or textured finishes. This treatment is ideal for rooms prone to intermittent moisture exposure, such as kitchens and washrooms.

 


3. Apply an Elastomeric Waterproof Coating


Elastomeric coatings offer high flexibility and create a thick, stretchable membrane over the wall. They are excellent for interior paint waterproofing because they bridge micro-cracks while providing long-term, high-strength protection. These coatings also resist UV rays, humidity, and expansion and contraction of walls.

 

Our Recommendation: An ideal elastomeric waterproof coating ensures long-lasting defence against water intrusion; Birla Opus Alldry Wall n Roof 10 does just that, along with offering 10 bar water pressure resistance, which adds an extra layer of protection

 

 

4. Install a Damp-Proof Course (DPC) for Chronic Dampness


Chronic rising damp calls for structural intervention. A DPC acts as a barrier within the wall to stop moisture from travelling upward. This method is essential for older homes where damp-proofing on painted walls is no longer effective through surface treatments alone. Once installed, it stabilises the base, ensuring long-term dryness.

 

 

5. Fix Cracks and Repaint with Waterproof Paint


Before repainting, repairing cracks with putty or crack sealants is vital. Using high-quality waterproof paints afterwards ensures a protective finish that prevents moisture penetration. This method not only enhances durability but also refreshes the overall aesthetic of your interiors.

 

Our Recommendation: Equipped with waterproofing properties, Alldry Repair Master ensures a resilient shield against moisture. It acts as a reliable bonding agent, adhering to surfaces and enhancing the longevity of your walls.

 

 

Tips for Interior Paint Waterproofing


Incorporating these tips ensures your strategy for how to waterproof painted walls remains effective through changing seasons. Here’s what to keep in mind:

 

  • Choose breathable waterproof coatings: These coatings block external water while allowing moisture vapour to escape. This balance prevents trapped dampness and mould buildup.
  • Ensure curing time: Rushing the process compromises adhesion and reduces waterproofing performance. Always follow the recommended drying schedule.
  • Improve ventilation: Good airflow keeps humidity at bay and prevents damp spots. Ventilation is crucial in enclosed areas like bathrooms or storage rooms.
  • Consider anti-mould additives: These additives help prevent fungal growth on walls, especially in humid or low-light zones. They can be mixed directly into paint for extra protection.

 

Read More: To explore materials and methods based on your specific waterproofing needs, read our guide on Choosing the Right Waterproofing Material for Long-Lasting Protection.

 

 

Common Mistakes to Avoid

 

When carrying out waterproofing on painted walls, avoiding common mistakes can improve the effectiveness of your work. Keep these errors in mind before starting:

 

  • Applying waterproofing on dusty/loose paint: Dust and loose flakes prevent coatings from adhering properly, so always clean, sand, and prepare the surface first.
  • Ignoring structural cracks: Cracks allow moisture to travel deep into the wall, making it crucial to seal them before applying any waterproofing treatment.
  • Waterproofing without fixing the seepage source: Treating only the wall won’t help if leaks persist; fix the source to ensure effective, long-term damp proofing of painted walls.

 

 

Strengthen Your Walls with Smart Waterproofing

 

Effective waterproofing is a combination of preparation, choosing the right products, and addressing structural issues early. With the right approach, you can protect your interiors using proven techniques on how to waterproof painted walls.
Once you’re ready to take the next steps, you can find expert support through our services and tools like PaintCraft and the Opus Visualiser for perfect finish planning and colour guidance. At Birla Opus, we can help you achieve durable, beautiful interiors with dependable interior paint waterproof performance.

 

 

Explore The Next Steps

 

Pick Your Colours – Explore the Birla Opus Colour Catalogue and find the perfect shade for your space.

Visualise Your Walls – Try the Birla Opus Visualiser and see how different paints look in real time.

Browse Paint Products – From interiors to exteriors, textures to wood and metal, discover our complete range.

Book Painting Services – Get expert end-to-end painting solutions from Birla Opus professionals.


Opus Assurance – Enjoy superior painting backed by our commitment to quality with easy registration, hassle-free claims, free repainting (product + labour), and the freedom to choose your preferred contractor.

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This Website/ App is owned by Grasim Industries Limited, Birla Paints division (“Grasim”).

“we” / “us” / “our” means Grasim Industries Limited (Grasim) 

“You” or “your” means any person who visits our Website/ App. 

 

Please read these Terms and Conditions of use carefully before using this Website/App. The Terms and Conditions set forth below (the "Terms") as well as those contained in the Privacy Policy of the Website/App governs your use of the Website/App and are legally binding on you. If you do not agree to all of these Terms or Privacy Policy, do not use access or otherwise this Website/App or any information contained on the Website/ App. 

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Privacy Policies

1. PURPOSE

Thank you for visiting our Website/ App. This Website/ App is owned by Grasim Industries Limited, Birla Paints division (“Grasim”). This Privacy Policy is designed to tell you about our practices regarding collection, use, and disclosure of information that you may provide via this Website/ App. Grasim is committed to protecting the privacy of every individual who installs and/or uses the Website/App. We have adopted the following Privacy Policy, which sets out the basis on which any personal data we collect from you, or that you provide to us, will be handled and dealt by us through your use of the Website/App. Please be sure to read this entire Privacy Policy before using, or submitting any information, to this Website/App, which is intended for use by residents of India.

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3. DATA GATHERING
 

Collection of Information: We may collect information that you share with us through your use of our Website/App, for example by: 

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4. OUR USE OF YOUR INFORMATION

 

Our primary goal in collecting personally identifiable information is to provide you with a smooth, efficient and customized experience. This allows us to provide services and features that are most likely to meet your needs, and to customize the Website/App and our services to make your experience easier. We may use the information we collect from you to provide you with information and services that you request from us. We use personally identifiable information in the files we maintain about you, and the other personally identifiable information we obtain from your current and past activities on the Website/App to provide you with services.

4.1. Our Disclosure of Your Information

 

  • Due to the existing regulatory environment, we cannot ensure that all of your private communications and other personally identifiable information will never be disclosed in ways not otherwise described in this Privacy Policy. By way of example (without limiting the foregoing), we may be required to disclose personally identifiable information to the government, law enforcement agencies, or third parties under certain circumstances; third parties may unlawfully intercept or access transmissions or private communications; or users or authorized users may independently abuse or misuse your information that they collect from the Website/App in violation of our Website/App’s Privacy Policy and Terms of Use. Therefore, although we use industry standard information security practices to protect your privacy, we do not promise, and you should not expect, that your personally identifiable information or private communications will always remain private. 

  • As a matter of policy, we do not sell or rent any personally identifiable information about you to any third party. However, the following describes some of the ways that your personally identifiable information may be disclosed. 

  • Other Corporate Entities: We may sometimes share data with our affiliates, associates, subsidiaries, joint ventures, group entities, and third-party service providers that provide us with services and/or provide you with services. To the extent that these entities have access to your personally identifiable information, we will ask them to treat it at least as protectively as they treat personally identifiable information they obtain from their other authorized users or members. Our affiliates, subsidiaries, and joint ventures will follow privacy practices no less protective of all authorized users and members than our practices described in this document, to the extent allowed by applicable law. It is possible that Grasim, its subsidiaries, associates, affiliates, joint ventures or any combination of such, could merge with or be acquired by another business entity. Should such a combination occur, you should expect that Grasim would share some or all of your personally identifiable information in order to continue to maintain and provide access to the Website/App. 

  • Legal Requests: Grasim co-operates with law enforcement inquiries, as well as other third parties to enforce laws relating to matters, such as intellectual property rights, fraud and other rights. We can (and you authorise us to) disclose any personally identifiable information about you to law enforcement and other government officials as we, in our sole discretion, believe reasonably necessary or appropriate, in connection with any investigation.

4.2. Changing Your Personally Identifiable Information

 

In case you request to remove your personally identifiable information from our records, we will retain such information in our files and databases, in order to use it in some unavoidable circumstances, such as to resolve disputes, troubleshoot problems, and enforce our terms and conditions. Further, such prior personally identifiable information is never completely removed from our databases due to technical and legal constraints, including stored "back up" systems. Therefore, you should not expect that all of your personally identifiable information will be completely removed from our databases in response to your requests. 

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The Website/App may use "cookies" (information stored on Your computer/Your Computer Resources which include mobiles phones and Apps) by your browser at our request. "Cookies" is a term generally used for small text files a web App can use to recognize repeat users, facilitate the user's ongoing access to and use of the Website/ App, allow a Website/ App to track usage behaviour and compile aggregate data that will allow content improvements and targeted advertising, preferences etc. Cookies themselves do not personally identify you, but they do identify your computer, computer resources and devices connected with computer resources and include Mobile phones. Generally, cookies work by assigning a unique number to the computer that has no meaning outside the assigning Website/ App. You are also being made aware that Grasim cannot control the use of cookies or the resulting information by advertisers or third parties hosting data on Grasim Website/App. If You do not want information collected through the use of cookies, you may change the settings in the browsers that allows to deny or accept the cookie feature as per your discretion and in the manner agreed by you. 

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7. CHANGES TO OUR PRIVACY POLICY

 

We reserve the right to change, suspend, or discontinue any aspect of the Website/ App at any time. Any modifications we may make to our privacy policy in the future will be posted on this page. Continued use of the Website/App will signify that you agree to any such modifications.

8. LEGAL DISCLAIMER

 

This is the official Website/ App of Grasim Industries Limited and provides general information about Grasim Industries Limited. The information and content are based on the laws applicable in India. While efforts are made to keep the information on this Website/App accurate and timely, Grasim does not guarantee or endorse the content, accuracy or completeness of the information, text, graphics, hyperlinks and other items contained herein or on any other server. This Website/ App and the materials, information, and references to services and products if any herein, including without limitations, text, graphics and links, are provided "as is" without representations or warranties of any kind, whether express or implied. To the fullest extent permissible, Grasim disclaims any warranties, express and/or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, non-infringement, freedom from computer virus and warranties arising from course of dealing or course of performance. Grasim does not represent or warrant that the functions contained in the Website/ App will be uninterrupted or error free, that defects will be corrected or that the Website/App or the server that makes the Website/App available are free of viruses or other harmful components. Grasim does not make any warranties or representations regarding the use of the materials in the Website/App in terms of their completeness, correctness, accuracy, adequacy, usefulness, timeliness, reliability or otherwise. Users, shall always keep indemnified, defend and hold Grasim, its affiliates, and their respective officers, directors, employees and agents harmless, from and against any claims, demands, causes of action, debts or liability, costs and expenses, including, without limitation, attorney's fees, based upon or relating to a third party claim against Grasim arising from any action or inaction of User or for any liability or expense-due to claims for personal injury or damage to property arising out of the fault or negligence of the User. Grasim is not responsible for any special, indirect, incidental or consequential damages that may arise from the use of or the inability to use, the Website/App and/or the materials contained on the Website/App irrespective of whether the materials contained on the Website/App are provided by Grasim. The contents of this Website/App are subject to change without notice. Commercial use of any of the contents of this Website/App in any manner is prohibited without prior written permission from an authorised person. No reproduction of any part of the Website/App may be sold or distributed for commercial gain nor shall it be modified or incorporated in any other work, publication or Website/App, whether in hardcopy or electronic format, including postings to any other App. Grasim reserves all other rights. No information on this Website/App shall constitute an invitation to invest in the listed companies belonging to the “Aditya Birla Group” conglomerate. Neither Grasim nor the entities belonging to the “Aditya Birla Group” conglomerate, nor their respective officers, employees or agents shall be liable for any loss, damage or expense arising out of any access to or use of this Website/App or any App linked to it, including, without limitation, any loss or profit, loss of business, loss of use, indirect, incidental or consequential loss. By viewing this Website/App you are deemed to agree to jurisdiction of the courts at Mumbai, India in respect of any action arising therefrom or related thereto.

 

If you have any questions about this Policy or other privacy concerns, you can also email us at legal.birlapaints@adityabirla.com

August 2023

9. Customer Consent

 

By agreeing to this privacy policy, you agree to receive promotional messages, offers, and updates from the Company via SMS, RCS (Rich communications message service), WhatsApp, etc.

GRASIM INDUSTRIES LIMITED, Birla Paints division

 

9th floor, Birla Centurion, Century Mills Compound, Pandurang Budhkar Marg, Worli, Mumbai– 400030, Maharashtra, India. 
 

Registered Office:
Birlagram, Nagda- 456 331 (M.P.) Tel: (07366) 246760-66, Fax: (07366) 244114, 246024, CIN: L17124MP1947PLC000410  
 

Allwood Contractor App Helpdesk 

Call: 1800 120 1234, Monday to Saturday, 09:30 am – 6:30 pm (Except Public Holidays).

Email: paints.custcare@adityabirla.com

Product Warranty

Terms and Conditions for product warranty registration of Birla Opus products



  1. The Warranty shall be effective from the date of purchase of the Product as per the tax invoice (“Warranty Start Date”), provided that painting work is fully complete, and the Consumer registers the Product for warranty.

  2. The Product must be registered within 15 days from the date of purchase by calling customer care at 18001201234 or registering on www.birlaopus.com and furnishing purchase details as required during the Warranty registration.

  3. The Warranty shall be valid for parameters and period as defined in the respective product warranty document (‘Warranty Period’) from the Warranty Start Date. 

  4. Upon settlement of any claim, Warranty of replaced Product will not start afresh, and will continue for the remainder of the Warranty Period from the Warranty Start Date.

  5. If there is a break/ lag in completing the painting work, the registration of the Warranty and Warranty Start Date will be determined by the Company at its sole discretion.

  6. The Company may appoint a person to examine and confirm the application of the Product as per the directions specified prior to registering the Warranty.

  7. For registering of Warranty, where quantity of Product purchase is equal to or more than 200 litres, please call our Helpline on 1800 120 1234 with requisite details. The registration of Warranty in such cases is subject to a satisfactory pre‐inspection at site by Company’s representative.

  8. For the warranty to be applicable:
    1. Minimum volume of the product required to be purchased needs to be met
    2. Birla Opus recommended system needs to be used
    3. Product coverage and application guidelines need to be adhered
       

For more details, please refer to respective  product specific warranty document and product information sheet.

  1. Consumer may raise a claim within 30 days of discovering issue(s) noticed on the affected areas based on Warranty Parameters/ scope

  2. The Consumer is required to notify the Company of the issue(s) noticed along with the invoice details, sample pictures and basis for Warranty invocation by contacting the customer care at 1800 120 1234. The Consumer shall provide such additional details as required by the Company and/or allow the Company to visit/inspect the painting site either in portion or entirety at the Company’s discretion.  

  3. In case where the Company decides that the Warranty is applicable on the issue(s) noticed on the affected areas, the Company shall bear the Replacements Costs as detailed in respective product warranty document to repair/ repaint the affected areas.

  4. Replacement Costs shall mean the cost of material and labour required to correct the affected portions, as determined by the Company.

  5. In case where the Company decides that Warranty is not applicable, the same shall be communicated to the Consumer.

  6. Warranty is applicable only to the affected area where the Product is used in accordance with application guidelines and not to the rest of the areas.

  7. In case the Consumer carries out repair works on the areas covered under the Warranty, the same shall be at their own risk and the Company’s Warranty on the Product shall not be valid on such repaired areas.

  8. The Warranty will cover only manufacturing defects of the Product and will not cover any defects arising out of factors not in control of the Company. For more details of exclusions, please refer to the warranty document of respective product. 

  9. Except expressly stated, the Company disclaims any liabilities whether in contract, tort or otherwise. The Company makes no warranty regarding merchantability or fitness of products for any particular purpose. 

  10. The Company shall not be held liable towards loss or damages of incidental, indirect or consequential nature or for any value more than the tax invoice value. 

  11. In case of any disputes, exclusive jurisdiction of the courts of Mumbai shall apply. Governing laws shall be Laws of India.

  12. The facts and all matters concerning any Warranty/ claim/ dispute will always be kept confidential by both the Consumer and the Company.