- March 19, 2026|
- News
When you are specifying aluminium systems, post-sale reassurance matters just as much as good looks and high performance. Installers are often asked one simple question by homeowners: what happens if something goes wrong?
This guide explains the Sheerline Bespoke product guarantee for trade in clear, practical terms so you can answer with confidence. Sheerline Bespoke offers a comprehensive product guarantee across its full range of products, giving installers a powerful trust-building tool during the sales process.
What does the Sheerline Bespoke product guarantee for trade cover?
At its core, the guarantee covers Sheerline aluminium systems manufactured in the UK, excluding third party components and installation. It is product-focused, clearly defined and designed to support fabricators and installers working with best quality products.
The headline cover includes:
- Powder coated finish: 25 years
- Profile integrity: 25 years
- Laminated foiling: 10 years
This applies across Sheerline Bespoke roofing solutions, lantern systems and arched frames.
How long does each element last and why it matters?
Long-term confidence in aluminium systems
The 25-year guarantee on profile integrity protects against warping, bending and cracking. It also covers the separation of aluminium from Thermlock thermal breaks, which is central to long-term thermal performance. For installers, this directly addresses concerns around durability and future callbacks.
Colour performance and finishes explained
Standard Sheerline Bespoke powder coated colours are guaranteed for 25 years against significant loss of gloss retention and colourfastness, provided the installation is not within 10km of a coastal or industrial environment.
For marine locations or bespoke colours, a location-specific guarantee can be issued following a free pre-order enquiry. This clarity helps Sheerline fabricators specify correctly from day one.
Gaskets, foils and thermal breaks
- Gaskets are guaranteed for 10 years to maintain an effective weatherseal.
- Laminated products are guaranteed for 10 years against discolouration and delamination.
- Thermlock thermal breaks deliver consistent thermal performance over 25 years, reinforcing Sheerline’s reputation for high performance systems.
What is not covered and why installers should explain it upfront?
The guarantee does not cover fabrication errors, installation or third party hardware and glazing, which remain the responsibility of the installer or supplier. Successful claims are limited to the resupply of Sheerline Bespoke components only.
Being upfront about this protects your business and reinforces transparency with homeowners.
How can installers use the guarantee to build trust?
A simple reassurance tool during sales conversations
Clear guarantees reduce hesitation. When installers explain the Sheerline Bespoke product guarantee in plain English, it reassures homeowners that they are investing in proven systems backed by robust manufacturing controls and outstanding levels of service.
Why does this matter to homeowners choosing a lantern or window system?
Homeowners want longevity, low maintenance and confidence that colours, profile integrity and thermal performance will last. The Sheerline Bespoke guarantee supports those expectations without over-promising.
Why does Sheerline Bespoke stand behind its range of products?
Sheerline Bespoke works exclusively with Sheerline systems because they are ethically sourced, recyclable and engineered for the UK climate. From aluminium frames to advanced thermal breaks, every system is designed to perform consistently over decades.
Speak to Sheerline Bespoke today
If you want clear technical support, dependable guarantees and a partner that understands fabrication and installation realities, talk to Sheerline Bespoke. Our team is here to help installers specify with confidence and deliver long-term value to homeowners.