Metal Waterproofing
R-MER SEAM
Sleek secret fix standing seam system delivering streamlined aesthetics with concealed fasteners. 25mm low profile design with click-together installation for fast, weathertight performance on commercial and residential projects.
Performance
Solarwatt panels feature premium glass-glass construction (not glass-plastic like many competitors), offering superior durability and performance. German engineering ensures minimal degradation (maximum 0.35% annually vs industry standard 0.7%), 30-year comprehensive guarantees, and proven reliability in challenging UK weather conditions.
Accreditations
Solarwatt panels feature premium glass-glass construction (not glass-plastic like many competitors), offering superior durability and performance. German engineering ensures minimal degradation (maximum 0.35% annually vs industry standard 0.7%), 30-year comprehensive guarantees, and proven reliability in challenging UK weather conditions.
Why Choose R-MER SEAM?
Concealed Fixings
Secret-fix clips create clean rooflines with no exposed fasteners or penetrations.
Low Profile Design
25mm profile offers sleek aesthetics with strong performance and drainage.
Rapid Installation
Click-together panel system with hidden clips speeds installation significantly.
Lightweight Construction
At 5.75kg/m², it’s perfect for low-load refurbishments and lightweight structures.
System Components
R-MER SEAM comprises engineered steel panels, concealed fixing clips, and integrated breather
membrane to deliver long-term weatherproof performance with minimal visual impact.
Steel Profiled Sheets
Pre-coated Steel Panels
Pre-coated steel panels with low profile standing seam for contemporary roof and wall applications.
- Material: 0.50mm steel with factory-applied coating
- Profile: 25mm low profile standing seam
- Width: 500mm
- Length: 1800mm to 13000mm (bespoke)
- Sealing: Butyl seals at sheet laps for watertight integrity
- Corrosion resistance: No site finishing required
Secret Fix Clips
No Penetration
Concealed clip system securing panels without surface penetration for clean aesthetics and weathertight performance.
- Fixing type: Secret fix (hidden fasteners)
- Attachment: Clips fix to substrate spacers
- Surface integrity: No penetration of weathering surface
- Thermal movement: Allows controlled expansion/contraction
- Panel alignment: Maintains positioning and seam integrity
- Water protection: Prevents potential ingress points
Breather Membrane
Protecting Substrate From Condensation
Vapour-permeable breather membrane protecting substrate from condensation while allowing moisture escape.
- Protection: Prevents interstitial condensation in roof assembly
- Permeability: Vapour-permeable (allows moisture escape)
- Safeguards: Structural deck and insulation layers from moisture
- Performance: Maintains thermal efficiency and structural integrity
Structural Substrate
Stable Fixing Surface for Secret Fix Clip Spacers
Plywood or OSB deck providing stable fixing surface for clip spacers and load transfer to building structure.
- Material: Plywood or OSB (Oriented Strand Board)
- Function: Stable fixing surface for secret fix clip spacers
- Support: Spans between structural purlins or rafters
- Load transfer: Transfers roof loads to building structure
- Stiffness requirement: Adequate to prevent panel deflection
- Performance: Maintains seam weathertightness
Quick Reference
| Specification | Details |
|---|---|
| System Type | Low profile standing seam with secret fix clips |
| Material | Pre-coated galvanized steel |
| Sheet Thickness | 0.50mm |
| Profile Height | 25mm |
| Panel Width | 500mm |
| Panel Lengths | 1800mm to 13000mm (bespoke) |
| System Weight | 5.75kg/m² |
| Fixing Method | Secret fix clip to spacer - no sheet penetration |
| Standard Colors | Anthracite Grey, Grey Aluminium, Traffic Grey, Copper Brown |
| Breather Membrane | Viking vapor-permeable membrane |
| Substrate | Plywood or OSB structural deck |
| Guarantee Period | Up to 20 years |
Ready To Specify With Confidence?
Your local Garland UK Technical Manager is here to help you choose the right solution and
ensure your roof is protected for the future.
Proven results
across every sector.
See how we’ve helped organisations maximise building performance, delivering reliable protection and long-term value.
