As a developer, architect, or self-builder, choosing high-quality materials is about more than just style—it’s about long-term value, performance, and peace of mind. That’s where Mumford & Wood (formerly Dale Joinery) stands apart.
We don’t just craft beautiful timber windows and doors - we stand by them. Our warranty package is one of the most comprehensive in the industry, giving you and your clients confidence that your investment is protected for years to come.
Long-Term Assurance: What Our Warranties Cover
We take pride in the durability of our products, and our warranties reflect that quality. Here’s what you can expect when you choose our bespoke timber windows and doors.
30-Year Timber Warranty
We craft every product using premium-grade engineered timber, chosen for its exceptional durability, strength, and stability. Backed by our 30-year timber warranty against rot and fungal decay, this ensures that our joinery isn’t just beautifully made; it’s built to withstand the elements and endure for decades.
10-Year Hardware Warranty
All ironmongery and operating hardware used in our windows and doors are carefully selected for their reliability and longevity. Our 10-year hardware warranty guarantees that every hinge, handle, and locking system continues to perform smoothly and securely.
10 Year Glazing Warranty
Our glazing units are equally robust, with a 10-year warranty for our Conservation range and 5 years for our Classic range. These warranties cover seal failure and insulating performance, offering lasting visual clarity, thermal efficiency, and confidence in every installation.
Our advanced four-coat, spray-applied microporous paint system not only delivers a flawless finish but also provides superior weather resistance while allowing the timber to breathe. With a 10-year paint warranty and minimal maintenance required, your windows and doors will retain their pristine appearance year after year.
5 Year Stain Warranty
Prefer a stained timber finish? Our 5-year stain warranty ensures your chosen tone maintains its rich character and long-lasting protection. We use premium water-based stains that enhance the natural beauty of the timber grain while providing reliable defence against the elements.
Why Our Warranties Are Just the Beginning
Our commitment to quality and service extends far beyond what’s printed on a warranty certificate. When you choose Mumford & Wood, you’re choosing a trusted partner for your project.
Made to Order
Each product is bespoke—crafted to your exact specifications for a seamless fit and perfect alignment with your architectural vision.
Sustainable Timber
We use responsibly sourced, multi-layered engineered timber for exceptional durability and sustainability—making our products as responsible as they are beautiful.
Precision Craftsmanship
Every window and door is made by experienced craftspeople who take immense pride in every detail—from machining to finishing.
Exceptional Support
Our expert team is here to help—before, during, and after your project. Need advice? A site visit? Paint touch-ups? We’re only ever a call away.
Future-Proof Your Project
Our warranties aren’t just about covering defects—they’re about ensuring confidence, protecting your investment, and enhancing customer satisfaction long after installation.
Whether you're building homes, restoring period properties, or managing multi-plot developments, choosing Mumford & Wood means choosing quality, support, and long-term performance.
