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Membrane Waterproofing: What It Is and How It Protects Your Home

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Waterproofing Membrane Installation | Birla Opus

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Apartment buildings are rapidly emerging, but these are often built on old farmlands with moisture-heavy soil and shared waterlines. This increases the risk of water seepage and structural damage.

 

Membrane waterproofing helps tackle these issues early. It blocks rain, protects against groundwater, and prevents mold, keeping your home stronger, longer, and far easier to maintain. In this blog, we will talk about how membrane waterproofing works and why it's non-negotiable.

 

 

What is Membrane Waterproofing?

 

 

 

 

Membrane waterproofing is a technique to protect houses and buildings from water ingress, like leakage and seepage through walls, roofs, floors, and other surfaces, by applying a thin layer of membrane to the surfaces.

 

There are two common types of waterproofing membranes:

 

  • Liquid-applied membranes: These are painted or sprayed on, forming a seamless, flexible layer that adjusts to surface movement.
  • Sheet membranes: Pre-formed sheets laid out over surfaces, ideal for larger flat areas like terraces or rooftops.

 

Both methods help safeguard buildings from water seepage, dampness, and long-term damage caused by unpredictable weather and soil moisture

 

 

Why Membrane Waterproofing Is Important.

 

Water seepage is one of the fastest ways to ruin a well-built structure. Here’s how membrane waterproofing works to stop that from happening:

 

  • Prevents foundational stress: Moisture seeps into load-bearing pillars and weakens the core structure. Waterproofing forms a tight seal that keeps groundwater from eating into your building's skeleton over time.
  • Keeps cracks from expanding: Micro-cracks in walls are easy to ignore until they spread. A membrane layer resists thermal movement and surface stress, reducing future breakage.
  • Protects against seasonal wear: From dry heat to lashing rain, India’s climate isn’t gentle. This one-time solution adapts to both, making it especially helpful in monsoon-prone or coastal areas.
  • Adapts across materials: It’s not surface-fussy. Whether you're working with concrete, metal, or brick, membrane waterproofing grips tight and stays put.

 

Need waterproofing for your bathroom walls or floor? Check out our guide on Why Bathroom Waterproofing Is Necessary to understand how to avoid damp and hygiene issues early on.

 

 

Types of Waterproofing Membranes

 

There’s no one-size-fits-all when it comes to protecting your home from water damage. The types of waterproofing membranes vary depending on budget, weather exposure, surface area, and what kind of maintenance you’re willing to deal with later. Here are the top types worth knowing:

 

 

  • Bituminous Waterproofing: One of the most widely used types of waterproofing membranes is Bituminous waterproofing, mostly because of its flexibility in application. It is highly recommended for waterproofing roofs, terraces, basements, etc. 
    Products like Alldry Total 2K provide heavy-duty, bituminous protection that can withstand monsoon moisture with ease, ideal for flat roofs and exposed slabs.

 

  • Polyurethane Waterproofing: Polyurethane waterproofing is applied as a coating over the surface. It provides a seamless finish, keeping not only water but also dust away from the walls. Its highly elastic properties make it suitable for all weather conditions. Applied as a liquid, PU-based products such as Alldry Wall n Roof 10 form an elastic film that moves with the surface and keeps out rain, UV rays, and dust.
  • EPDM Membranes: EPDM (Ethylene Propylene Diene Monomer) is a synthetic type of waterproofing membrane made from rubber-based material. Since it is rubber-based, it has advantages like elasticity and flexibility, which make it easy to apply on flat roofs. It can also withstand high temperatures and all kinds of weather.
  • PVC and TPO Membranes: Applied using heat-welding, these membranes offer a seamless finish. TPO is UV-resistant and suited for commercial roofs, while PVC works well for basements and tunnels due to its fire and chemical resistance.
  • Self-Adhesive Membranes: Perfect for DIYers or quick patch jobs, self-adhesive membranes are fast to apply. Think small balconies, bathroom floors, or sidewalls. They save time, money, and don’t need professional skills, just peel, stick, and press down. 
  • These work well for temporary repairs, but for lasting protection, Birla Opus waterproofing primers like Alldry Wall Fix 4 help prep even small surfaces the right way.

 

 

Waterproofing doesn’t need to be overwhelming. 
Whether you're protecting a new terrace or restoring an older structure, Birla Opus’s Waterproofing service brings expert support straight to your home, right from wall inspection to seamless application.
Book a free consultation and let professionals handle the rest.

 

 

 

 

Waterproofing Membrane Installation Process

 

 

 

 

A good membrane is only as effective as its installation. Here’s how waterproofing membrane installation is done the right way:

 

  • Surface Preparation: The surface must be even and fully repaired—no cracks, holes, or damp patches. Clean thoroughly to remove dust, oil, or debris. Let it dry out completely before you move on. This step sets the base for how membrane waterproofing works in the long run.
  • Priming: Primer acts as a grip coat. It bonds the surface to the membrane and seals any remaining pores. Skipping this can cause the membrane to lift or bubble later, especially in high-moisture zones like basements or terraces.
  • Membrane Application: Depending on the type, the application varies:
    Sheet membranes are laid out evenly, then sealed. PVC and TPO types are fused using heat-welding. EPDM sheets are overlapped to reinforce the waterproofing layer.
    Liquid membranes are simpler—just paint them on with a roller or brush. They form a seamless coating that adjusts to surface shifts.
  • Joint Sealing: Corners, junctions, and pipe outlets are weak spots. Reinforce these using extra strips or coating layers to lock in the seal and avoid leaks. Products like Alldry Crack Master Paste are perfect for filling joints and micro-cracks before applying the membrane layer.
  • Curing: Let everything cure completely. Rushing this step can undo all the effort. Only after it’s fully set should you move ahead with painting or flooring.

 

Looking for a step-by-step approach? 

Read our DIY guide on waterproofing for roofs if you're planning to do it yourself with expert support in the background.

 

 

Birla Opus Waterproofing Solutions

 

When it comes to membrane waterproofing, Birla Opus delivers industry-grade protection without the fuss. Our PU-based solutions, like Alldry Wall n Roof 10, offer a seamless finish that adapts to weather shifts and keeps rooftops, terraces, and even bathrooms leak-free.

For those looking at budget-friendly reliability, the bituminous waterproofing options, such as Alldry Total 2K bring long-term resilience, ideal for heavy-duty waterproofing on exposed surfaces.

Whether you're sealing a high-traffic terrace or lining damp-prone bathroom walls, Birla Opus products are built for durability, coverage, and zero compromise on performance.

Explore Birla Opus Waterproofing Range

 

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Terms and Conditions

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. 

Your use of the Website/App shall be deemed to be your understanding of, and agreement, to each of the Terms set forth herein. Grasim may revise and update these Terms from time to time. Your continued usage of the Website/App shall be considered as an implied acceptance/deemed consent to abide by these Terms for usage of this Website/App.

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.

2. SCOPE OF APPLICATION

 

  1. This policy will be applicable to all personally identifiable information that you provide to Grasim while visiting or using the Website/App. This Website/App contains links to other Apps. Please be aware that we are not responsible for the content or privacy practices of such other Apps. We encourage our users to be aware when they leave our Website/App and to read the privacy statements of any other App that collects personally identifiable information.
  2. Grasim expressly reserves the right to change this Privacy Policy periodically in future which will be exercised at its sole discretion, and at such intervals of it choosing the right without prior notice to the users. User shall review our Privacy Policy available at the Website/App regularly to be sure you are fully updated with our current practices and procedures in this area. Your continued use of the Website/App will be subject to the then-current Privacy Policy. 
  3. The following discloses our information gathering and dissemination practices for the Website/App:
    • Overview: As part of the normal operation of the Website/App, we collect and, in some cases, may disclose personally identifiable information about you. This Privacy Policy describes the personally identifiable information we collect about you and what may happen to that information.
    • By accepting this Privacy Policy and our Terms of Use, you expressly consent to collect, store, delete, use, combine and disclose your personally identifiable information in the manner prescribed in this Privacy Policy. This Privacy Policy is incorporated into and is subject to the conditions of the Terms of Use and governs all use of the Website/App by You.
    • We may collect your name, address, email address, telephone number, location data and other personally identifiable information you submit on the Website/App. Such personally identifiable information will not be posted in areas of the Website/App viewable by the public or users of the Website/App. Location data is collected for the purpose of enabling real-time surveyor allocation and improving operational efficiency in assigning site visits.
    • By using this Website/App, you agree with the terms of this Privacy Policy. Whenever you submit information via this Website/App or through any other mode, you consent to the collection, use, and disclosure of that information in accordance with this Privacy Policy.

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: 

  • E-mailing or writing to us using the contact details posted on our Website/App; or 
  • Submitting other enquiries.

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. 

5. USER OF COOKIES

 

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. 

6. SECURITY

 

Grasim will use reasonable security measures to safeguard the confidentiality of your personal identifiable information. Although we will put our best efforts to protect your personal data, we cannot guarantee the security of your data transmitted to our Website/ App; any transmission is at your own risk. Once we have received your information, we will use strict procedures and security features which are appropriate to the type of personal information you have provided to try to prevent unauthorised access or inadvertent disclosure. However, you agree and acknowledge that "perfect security" does not exist on the Internet. 

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.