Top 10 Reasons to Choose Guardian Flat Roof System
Truly installer-friendly
no outside trades required
This is a pre-engineered system designed for conservatory and extension installers rather than specialist carpenters or joiners. It removes the need for a separate contractor to “cut in” a traditional flat roof structure on site.
Why it matters to installers:
- Keep work in-house rather than relying on outside trades
- Fewer site delays waiting for other contractors
- Better control of costs and quality
Much faster install than a traditional flat roof
The Guardian system uses a prefabricated aluminium beam and wallplate structure combined with an integrated insulation build-up. This significantly reduces the number of stages compared to a traditional timber flat roof and makes installation a matter of hours rather than days.
Why it matters to installers:
- Lower labour costs per job
- Ability to complete more projects per week
- Improved profitability on every install
Works with both Guardian Warm Wall
and traditional brick & block
The roof is designed to sit neatly within the Guardian Warm Wall build-up), but is equally compatible with conventional masonry walls. This makes it a versatile solution across different project types.
Why it matters to installers:
- One roof solution across multiple build types
- Less training required for different systems
- Simpler ordering and stock management
Industry-leading U-Value of 0.10 W/m²K
The roof achieves a calculated U-value of 0.104 W/m²K, which is well beyond current Part L requirements. This level of performance is typically difficult to achieve with traditional flat roof constructions.
Why it matters to installers:
- Exceeds Part L requirements in England, Wales and Scotland
- Easier building control sign-off
- Strong selling point to homeowners
Independently tested by BRE
for U-Value and condensation risk
The roof build-up has been thermally modelled and validated by the Building Research Establishment (BRE). Testing confirms both thermal performance and condensation safety within the structure.
Why it matters to installers:
- Greater confidence in long-term performance
- Reduced risk of callbacks or defects
- Stronger credibility with building control and customers
Suitable for L-shaped and complex layouts
The system is flexible enough to be configured around corners and multi-section extensions. This means it is not limited to simple rectangular roof designs.
Why it matters to installers:
- Can quote a wider range of projects
- Fewer design restrictions than traditional roofs
- More flexibility on challenging extensions
10-year product warranty
+ 10-year workmanship warranty option
All Guardian fabricated roofs carry a 10-year product warranty when built to specification. Installers can also provide a matching 10-year workmanship warranty with an insurance-backed guarantee for homeowners.
Why it matters to installers:
- Helps win more jobs
- Builds trust with homeowners
- Positions installers as premium, professional providers
Building control friendly
tested and approved
The system has been independently tested, is recognised by Hertfordshire Building Control, and is LABC compliant. This provides clear reassurance to both installers and inspectors.
Why it matters to installers:
- Fewer issues with inspectors
- Faster project approvals
- Less time spent revising details
Fully specified integrated system = fewer site errors
The specification includes a clear component checklist covering structural elements, insulation, fixings, guttering, fascia and soffit. This reduces guesswork compared to traditional site-built flat roofs.
Why it matters to installers:
- Clear component list reduces mistakes
- Less waste and rework on site
- More consistent quality on every install
First-fit assist available on all installs
Guardian can provide on-site support for installers undertaking their first projects with the flat roof system. This ensures best practice is followed from day one.
Why it matters to installers:
- On-site support for their first projects
- Faster learning curve with the system
- Greater confidence to adopt the roof quickly
