Delta - Construction the importance of a Manufacturer’s Guarantee

June 2025

Construction Product Manufacturing – how guarantees and warranties work

A manufacturer’s guarantee is essential for construction projects, assuring quality and reliability. It provides peace of mind and protection against potential product defects.

A manufacturer’s guarantee or warranty is a written promise to replace defective goods within a specific period.

Manufacturer guarantees or warranties represent a direct legal obligation between the manufacturer and the manufacturer’s customer. Guarantees and warranties should be clearly presented in plain language to ensure customers understand their coverage and benefits.

Consumers are entitled to a guarantee period for their purchases under the Consumer Rights Act 2015.

Warranties, offered by product manufacturers, generally cover defects like material failures, faulty components, or manufacturing flaws.

While specialist installing companies will normally offer installation warranties that cover the installation work, often for shorter periods than the product warranty. Installation warranties safeguard against problems from poor workmanship or incorrect installation. It’s crucial to understand both the product and installation warranties, as they can differ in coverage periods and conditions.

Reputable installers, such as the Delta Registered Installer Network and the Delta Pump Servicing Partner Network typically extend Delta’s manufacturer’s warranty to their customers and/or homeowners for extra coverage and benefits.

To qualify for full warranty coverage, some manufacturers require product registration within a certain time frame after installation. For basement drainage systems, regular equipment servicing may also be required.

Manufacturer guarantees usually apply to the original purchaser and most can also transfer to third-party buyers. However, some guarantees may not explicitly allow for transfers. It is essential to review the specific guarantee terms to understand the conditions and limitations.
What to look for

A construction product warranty/guarantee that a building component or material is defect-free for a specified period. The manufacturer or supplier commits to replace the product if issues arise within the warranty period. These warranties may be part of a broader construction contract or exist as stand-alone agreements.

Manufacturer guarantees are void if products are incorrectly installed or incorrectly specified by third parties.

What can affect a guarantee/warranty

Improper use (Using a non-UV stable product (where a UV stable product is required));
Negligent repairs;
Purchasing goods through a third-party;
Alterations and modifications;
Repairs by third-parties;
Changing Spec and using a mixture of products;
Failure to following Manufacturer Guidance;
Failure to following instructions (MSDS/Product Data Sheets);
Not mixing products correctly;
Not allowing products to cure correctly;
Extreme environmental conditions;
Normal wear and tear;
Accidental damage.

Construction product warranties are crucial for any building project. They offer legal and financial protection against defects and ensure that work meets the highest standards.
Always Happy to Help

Our Type C Cavity Drainage Membranes are backed by a 30-year warranty, reflecting our commitment to providing the highest quality products. Terms and conditions apply for warranty criteria. For detailed information, please visit our website at www.deltamembranes.com/technical

Delta’s field Technical Teams are equipped to offer valuable assistance, conducting comprehensive surveys to help you select the most fitting waterproofing system for your project needs. This service ensures the chosen solution suits your specific requirements perfectly.

Reach us at 01992 523 523 or drop us an email at info@deltamembranes.com.

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