When it comes to repairing rotten timber windows, doors and exterior joinery, few names carry the same reputation as Repair Care. For over 30 years, Repair Care has been the system of choice for conservation specialists, professional decorators and joinery repair contractors who need repairs that last. It's frequently specified for listed buildings, heritage properties and high-value homes where replacing original timber simply isn't an option.
But what exactly is Repair Care? Why is it more expensive than many competing systems? And how does it compare with alternatives such as Timbabuild?
Let's take a closer look.
What Is Repair Care?
Repair Care is a specialist timber repair system designed to restore damaged or decayed wood rather than replace it. Instead of cutting out and replacing entire window frames, sills or door components, the damaged timber is removed and rebuilt using a combination of epoxy resins and repair compounds. Once cured, the repair can be sanded, shaped and painted just like the original timber.
The result is a strong, durable repair that preserves the existing joinery while saving significant time and disruption compared to full replacement.
This approach is particularly valuable for period properties, listed buildings and traditional timber windows where retaining original features is often desirable - or even required.
Understanding the Repair Care system
One of the reasons Repair Care has earned such a strong reputation is that every product within the range has a specific purpose.
Dry Flex®
Dry Flex is the heart of the Repair Care system. Available in different curing speeds, Dry Flex is a flexible epoxy repair compound used to rebuild sections of damaged timber after decay has been removed.
Unlike many traditional fillers, Dry Flex remains slightly flexible after curing. This allows it to move with the natural expansion and contraction of timber, helping to prevent cracking and failure over time.
The Dry Flex range includes products such as Dry Flex 1, Dry Flex 4 and Dry Flex 16, with the number indicating the approximate curing time in hours under normal conditions. This allows contractors to select a repair compound that matches the demands of the project. Faster-curing grades are useful for small repairs and cooler weather, while slower-curing formulations provide more working time when carrying out larger repairs or working in warmer conditions.
DRY FIX®
Before applying DRY FLEX, the timber is typically treated with DRY FIX®. This low-viscosity epoxy primer penetrates deep into porous or weakened timber, strengthening the remaining wood and creating an ideal surface for the repair compound to bond to. Think of it as the foundation that helps ensure the repair lasts.
Easy•Q™ and starter kits
For professionals carrying out regular repairs, Repair Care offers complete application systems including measuring tools, mixing boards, and specialist applicators. These are designed to ensure accurate mixing ratios and consistent results on site.
Repair Care syringes
One of the most popular additions to the range is the Repair Care syringe system.
These pre-measured cartridges make it incredibly easy to tackle small repairs around windows, doors and exterior joinery. Instead of mixing larger quantities of product, users can dispense precisely the amount required directly into the repair area.
For minor areas of decay, surface damage and localised repairs, the syringe format helps reduce waste, speeds up application and makes the entire process more accessible.
It's an excellent option for maintenance teams, decorators and contractors who regularly encounter small timber repairs during routine work.
DRY FLEX® 2-in-1
Repair Care also offers the DRY FLEX® 2-in-1 range. Supplied in a twin-cartridge format, these products automatically dispense the correct mixing ratio through a static mixing nozzle, eliminating the need for manual measuring and mixing. Ideal for smaller repairs, maintenance work and contractors on the move, the 2-in-1 system delivers the same flexible, durable repair with faster, cleaner application and minimal waste.
Colour pigments
Repair Care Colour Pigments are designed to tint selected DRY FLEX® repair compounds, helping repairs blend more naturally with the surrounding timber. They are particularly useful where repairs will be stained or finished with translucent coatings, reducing the visibility of the repair beneath the final finish.
Why is Repair Care more expensive?
This is probably the question we're asked most often. Repair Care products typically cost more than standard wood fillers and many competing epoxy repair systems. However, the higher price reflects several factors:
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Extensive research and development
Repair Care has spent decades refining its formulations to provide the right balance of strength, adhesion and flexibility. Many cheaper fillers cure extremely hard. While this may initially seem like a benefit, rigid repairs can crack or fail when timber naturally moves with seasonal changes in temperature and humidity. Repair Care's flexible technology is specifically designed to minimise this risk. -
Professional-grade performance
The products are engineered for long-term exterior exposure, making them particularly suitable for demanding applications such as timber windows, doors and structural joinery. Many users report repairs lasting for years - even decades - when applied correctly and maintained as part of a regular decorating cycle. -
Training and technical support
Part of what you're paying for is the support behind the product. Repair Care offers comprehensive training programmes that teach contractors how to correctly assess decay, prepare timber and apply repairs using the approved system. This helps ensure consistently high standards and reduces the likelihood of repair failure caused by incorrect application.
The cost of replacement
While Repair Care may seem expensive when compared to a tub of filler, it looks much more economical when compared to the cost of replacing a window. Replacing a traditional timber sash window or bespoke hardwood frame can quickly run into hundreds - or even thousands - of pounds once manufacturing, installation and decorating costs are considered. In many cases, a properly executed Repair Care repair can restore the original timber for a fraction of the cost of replacement.
How to use Repair Care
Repair Care products are designed to be straightforward to use, but achieving a durable repair relies on following the correct process. Rather than simply filling damaged timber, the Repair Care system is designed to remove the cause of the problem, stabilise the remaining sound wood and create a repair that bonds securely and moves naturally with the timber. The seven-step process below provides an overview of the recommended application method:
Whether you're tackling a small window frame repair or restoring more extensive exterior joinery, taking the time to complete each stage properly will help maximise adhesion, minimise the risk of future failure and deliver a repair that's built to last.
One other thing to note is that DRY FLEX® can be used on top of existing epoxy repairs, including previously applied DRY FLEX®. Just make sure the repair is sound, dry, and well bonded to the substrate. For best adhesion, give the surface a light sand to remove any surface contamination or gloss before applying the new layer. If the existing epoxy is loose, cracked, or showing signs of failure, it should be removed before carrying out the repair.
Repair Care Training and 10-Year Warranty
One of Repair Care's biggest strengths is its training programme. Contractors can undertake official Repair Care training to learn the correct methods for carrying out timber repairs using the system. This covers everything from identifying the causes of decay through to preparing substrates and applying repair compounds.
Successful completion allows contractors to become recognised Repair Care applicators. When repairs are carried out according to Repair Care's approved methods, qualifying projects can benefit from a warranty of up to 10 years. This provides valuable reassurance for contractors, specifiers, and property owners alike.
Repair Care vs Timbabuild
Repair Care and Timbabuild are often compared because both are designed to repair rather than replace damaged timber. Both systems have strong followings and can produce excellent results when used correctly, but there are some key differences:
| Repair Care | Timbabuild | |
| Primary focus | Professional timber repair system used widely in conservation and heritage restoration | Timber repair and maintenance system suitable for a wide range of repair projects |
| Reputation | Long established brand, with a particularly strong following in heritage sector | Reliable, well-used alternative, popular with decorators and joiners |
| Flexibility | Dry Flex technology remains slightly flexible after curing to accommodate natural timber movement | Comprehensive repair system with products for strengthening, rebuilding, and finishing damaged timber. |
| Training | Comprehensive manufacturer-led training programme. | Training and technical support available. |
| Warranty | 10-year warranty linked to contractor certification and use of approved Repair Care methods. | 50-year guarantee linked to adherence to specified application and system requirements. |
| Technical support | Extensive specification, training and project support. | Good technical support and guidance for contractors. |
| Conservation credentials | Frequently specified for listed buildings and heritage properties. | Less commonly specified in conservation projects. |
| Small repairs | Syringe cartridges make simple repairs quick and precise. | Typically require mixing repair products manually. |
| Product cost | Higher initial purchase cost. | A more cost-effective version. |
| Best suited to | Heritage specialists and conservation contractors. | General repair, maintenance and refurbishment contractors. |
Both systems produce durable, professional-quality repairs when used correctly. Repair Care tends to be the preferred choice for heritage projects and contractors who value its training programme, warranty support and long-standing reputation.
Timbabuild, meanwhile, offers a more budget-friendly alternative that remains highly effective for many everyday timber repair applications. The best choice will ultimately depend on the project requirements, budget and level of support required.
Is Repair Care worth it?
If you're looking for the cheapest way to fill a hole in a piece of timber, probably not. If you're looking for a proven repair system capable of extending the life of original windows, doors and joinery for many years, Repair Care's reputation is well deserved.
The products are expensive compared to standard fillers, but they are designed for a very different purpose. When weighed against the cost of replacing quality timber joinery, they often represent excellent value.
For property owners seeking to preserve original features and contractors looking for a professional-grade repair system backed by training and warranty support, Repair Care is one of the industry's benchmark timber repair solutions.
