Compare the Different Liquid Roofing Systems
The three systems in our range are designed to cater to all flat roofing needs. Whether installing new roofs, overlaying, repairing, or revitalising existing ones, we have you covered.
Fibrelast
Traditional GRP laminate
Not overlay-able
Catalyst cure
450–600gm glassfibre
Higher odour
Fibrecoat
Flexible reinforced polyurethane
Overlay-able
Moisture cure
150gm glassfibre
Low odour
Overcoat
Advanced STP hybrid polymer
Overlay-able
Moisture cure
No glassfibre
Low odour
| Feature | Fibrelast | Fibrecoat | Overcoat |
|---|---|---|---|
| Core system properties | |||
| System type | Traditional GRP fibreglass system | Flexible fibreglass-reinforced polyurethane system | STP hybrid polymer roofing system (reinforcement-free) |
| Resin / chemistry | Polyester | Polyurethane | STP hybrid polymer |
| Flexibility | Low | High | High |
| Performance gradings | |||
| Movement tolerance | ●●●○○Medium | ●●●●●Very high | ●●●●●Very high |
| UV stability | ●●●●○High | ●●●○○Medium | ●●●○○Medium |
| Ease of use | ●●●○○Moderate | ●●●●○Easy | ●●●●●Very easy |
| Foot traffic tolerance | ●●●●○High | ●●●●○High | ●●●○○Medium |
| Repairability | ●●●●○High | ●●●●○High | ●●●●●Very high |
| Build and installation | |||
| Fibreglass reinforcement | Required (450g / 600g) | Required (150g) | Not required |
| Curing method | Catalyst cure | Moisture cure | Moisture cure |
| Primer requirements | Bonds directly to OSB (no primer required) | Surface-dependent (primers used to bond to multiple substrates) | Typically none on non-porous surfaces; primers for porous substrates |
| Typical detailing complexity | Medium | Medium | Easy |
| System build (installed finish) | Reinforced GRP laminate build | Reinforced flexible laminate build | Reinforcement-free high-performance membrane build |
| Guarantees | |||
| System guarantee (up to) | Up to 25 years | Up to 25 years | Up to 20 years |
| Compliance and finish | |||
| Odour profile | Strong | Low | Very low |
| Fire performance | BROOF(t4) | BROOF(t4) | BROOF(t4) (when specified) |
| Typical finish type | Smooth GRP finish; anti-slip achievable with additional layers | Smooth or lightly textured reinforced finish; anti-slip options available | Smooth, textured or anti-slip finishes available as part of the system |
| Colour options | 4 standard colours; colour matching available | Colours available on request | 20+ colours |
| Best suited for | |||
| Typical applications | New roofs on OSB; strength-led GRP installations | New roofs and Multi-surface refurbishment needing reinforcement plus flexibility | New roofs and refurbishments across most substrates; fast route to a high-performance finish |
FibrelastTraditional GRP
System typeTraditional GRP fibreglass system
Resin / chemistryPolyester
FlexibilityLow
Movement tolerance●●●○○Medium
UV stability●●●●○High
Ease of use●●●○○Moderate
Foot traffic tolerance●●●●○High
Repairability●●●●○High
Fibreglass reinforcementRequired (450g / 600g)
Curing methodCatalyst cure
Primer requirementsBonds directly to OSB (no primer required)
Typical detailing complexityMedium
System guarantee (up to)Up to 25 years
Odour profileStrong
Fire performanceBROOF(t4)
Typical finish typeSmooth GRP finish; anti-slip achievable with additional layers
Colour options4 standard colours; colour matching available
Typical applicationsNew roofs on OSB; strength-led GRP installations
FibrecoatFlexible PU
System typeFlexible fibreglass-reinforced polyurethane system
Resin / chemistryPolyurethane
FlexibilityHigh
Movement tolerance●●●●●Very high
UV stability●●●○○Medium
Ease of use●●●●○Easy
Foot traffic tolerance●●●●○High
Repairability●●●●○High
Fibreglass reinforcementRequired (150g)
Curing methodMoisture cure
Primer requirementsSurface-dependent (primers used to bond to multiple substrates)
Typical detailing complexityMedium
System guarantee (up to)Up to 25 years
Odour profileLow
Fire performanceBROOF(t4)
Typical finish typeSmooth or lightly textured reinforced finish; anti-slip options available
Colour optionsColours available on request
Typical applicationsNew roofs and Multi-surface refurbishment needing reinforcement plus flexibility
OvercoatSTP hybrid
System typeSTP hybrid polymer roofing system (reinforcement-free)
Resin / chemistrySTP hybrid polymer
FlexibilityHigh
Movement tolerance●●●●●Very high
UV stability●●●○○Medium
Ease of use●●●●●Very easy
Foot traffic tolerance●●●○○Medium
Repairability●●●●●Very high
Fibreglass reinforcementNot required
Curing methodMoisture cure
Primer requirementsTypically none on non-porous surfaces; primers for porous substrates
Typical detailing complexityEasy
System guarantee (up to)Up to 20 years
Odour profileVery low
Fire performanceBROOF(t4) (when specified)
Typical finish typeSmooth, textured or anti-slip finishes available as part of the system
Colour options20+ colours
Typical applicationsNew roofs and refurbishments across most substrates; fast route to a high-performance finish
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