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Timber Window Replacement

At JJ Group, we specialise in timber window replacement, combining expert craftsmanship, high-quality materials, and a fully managed service from start to finish. While we always aim to preserve existing timber windows through careful repair, sometimes full replacement offers the most effective, long-term solution. In this recent project, we completed a full timber window replacement for a client whose original three-casement window had deteriorated beyond repair.

Case Study: Three-Casement timber window replacement Project

Assessing The Need For Timber Window Replacement

Following a thorough site assessment, we carefully inspected the condition of the existing three-casement window. Over many years, exposure to wind, rain, and fluctuating temperatures had caused significant damage to both the timber frame and casement sections. Extensive rot had compromised the structural integrity of the window, while gaps and deteriorated seals were allowing draughts, moisture ingress, and heat loss.

In situations like this, repair work would only offer a temporary solution, with ongoing maintenance costs likely to increase over time. The weakened timber could not provide the level of insulation, weather protection, or security that modern standards demand. For this reason, we advised the client that a full timber window replacement was the most practical and cost-effective long-term option.

By replacing the entire window with a high-quality, custom-built timber unit, we were able to restore the property’s original character while dramatically improving its thermal performance and overall energy efficiency. This not only increases the comfort of the home by eliminating draughts and cold spots, but also helps the homeowners reduce their energy consumption and heating bills – delivering long-term savings while creating a more comfortable, stable indoor environment throughout the year.

Case Study: Three-Casement timber window replacement Project

Bespoke Manufacturing Using Premium Materials

Every timber window replacement we carry out is fully bespoke and crafted in our dedicated joinery workshop. For this project, we selected Sapele hardwood for the frame, chosen for its excellent durability, strength, and resistance to moisture. The casement sections were manufactured from Accoya, a modified timber renowned for its outstanding longevity and stability, even in challenging weather conditions.

To deliver a flawless and long-lasting finish, the entire window was factory sprayed in our in-house spray booth. The client chose a clean white finish for both the interior and exterior, though we offer complete flexibility for clients wishing to select different colours inside and out to complement their property’s design.

Professional Installation With Full Project Management

Our seamless installation service ensures that every timber window replacement is completed to the highest standards with minimal disruption to the homeowner.

  • Glazing: We installed toughened safety glass, providing increased security and durability. A white spacer bar was used to maintain a crisp and uniform appearance.
  • Ironmongery: The new casements were hung on solid brass butt hinges for smooth, long-term operation. Stays and fasteners were installed in polished chrome, adding a subtle contemporary finish.
  • Finishing details: The design included a single horizontal glazing bar, in keeping with the property’s character. Internal trims were fitted for a neat interior finish, while a new cement fillet was applied externally to seal and protect the frame.
Case Study: Three-Casement timber window replacement Project

A Fully Managed Timber Window Replacement Service

Choosing JJ Group means clients benefit from complete peace of mind throughout their timber window replacement project. We organised every stage of the work, including the safe removal and disposal of the original window. In this case, we used our own scaffolding equipment, which is perfect for smaller installations. For larger or more complex projects, we coordinate directly with trusted scaffolding partners to ensure safe access and efficient scheduling, taking all the stress out of the process for the client.

The Finished Result

The completed installation has significantly improved the property’s appearance, while providing excellent thermal performance, improved security, and long-lasting protection from the elements. Thanks to our expert timber window replacement service, the homeowner can now enjoy a draught-free, energy-efficient home that will stand the test of time.

Case Study: Three-Casement timber window replacement Project

Get In Touch

If your timber windows are showing signs of wear or damage, do not wait for problems to worsen. Contact JJ Group today to arrange a no-obligation site visit and receive a detailed quotation for your bespoke timber window replacement. Our experienced team is ready to deliver exceptional results, tailored to your home.

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