- by Dina Vaisman
- Apr 8, 2026
- Roofing Questions
Wonderbuilds offers a range of flat roofing systems, including ones that are safe to torch, and ones that have 25-year guarantees.
In this article, we will discuss:
- What is a roofing system?
- What are the different types of flat roofing systems?
- Wonderbuilds Flat Roofing Systems
What is a roofing system?
A roofing system is a combination of roofing materials that have been specifically selected to be installed in a certain order. A roofing system is made up of components such as a roof deck, underlay, insulation, vapour barrier, and a top layer/cap sheet. Each component is chosen so that the roofing system can perform well and provide waterproofing. BUR systems (Built-Up Roofing systems) can be used on flat roofs of either commercial or residential buildings. They can last for several years if they are properly maintained. Correct installation methods are also crucial for the system to be durable.
What are the different types of flat roofing systems?
Warm deck vs cold deck
There are different types of flat roofing systems:
- warm deck roof
- where the insulation sits above the structural deck
- can be more costly
- easy installation
- vapour control layer is required
- cold deck roof
- where insulation is installed below the structural deck
- can be more affordable
- vapour control layer is not required
Factors to consider
Contractors, building owners, etc. may consider the following factors when selecting which flat roofing system to use for their project:
- How much thermal insulation is required
- The type of deck that is in the system
- Ease of installation
- Costs
- Visual appearance
- The warranty length
Warranty Options
Warranty lengths can vary from 25 years, 20 years, or 15 years.
Wonderbuilds Flat Roofing Systems
25-year systems
Wonderbuilds have various 25-year systems available, including this Fully Adhered System, which is Safe to Torch.
The components in this system are:
- Self-Adhesive Cap sheet
- Self-Adhesive Underlay
- SA Primer
- Tissue Faced PIR Insulation
- PU Insulation Adhesive
- VB600 Self-Adhesive VCL
- SA Primer
Liquidguard systems
Wonderbuilds offers a Liquidguard Overlay System, and a Liquidguard Fully Insulated System, both of which are safe to torch.
BROOF (t4) system
Wonderbuilds BROOF (t4) System has been highly requested, due to the highly rated fire certification.
It is important to note that in order for the BROOF (t4) certification to be valid, components of this roofing system must not be swapped with any other materials, as the roofing system has been tested and certified as a whole system.
20-year system
Wonderbuilds Single Layer 20 Year System consists of a Single Layer Overlay, Quick Drying Primer, and the existing substrate.
15-year systems
Wonderbuilds has a range of 15 Year Flat Roofing Systems, some of which are safe to torch.
Conclusion
Flat roofing systems are a great option for various roofing projects, however, there are a few factors to consider, such as length of warranty, costs, ease of application etc. Wonderbuilds offers a range of flat roofing systems.
FAQs
What kind of roofing systems do Wonderbuilds offer?
- 25-year, 20-year, 15-year, safe to torch, BROOF (t4) certified, Liquidguard
Are the Wonderbuilds roofing systems for flat roofs?
- Yes, they are for flat roofs
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