Parapet Capping
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High-End Wall & Parapet Protection
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Parapet Capping Materials
Compare the primary architectural metals specified for high-performance wall capping applications.
| Material | Standard Gauge | Jointing System | Ideal Application |
|---|---|---|---|
|
Architectural Zinc
| 0.7mm - 0.8mm | Standing Seam / Flat Lock Joint | Modern flat roof systems and high-end zinc facade matching. |
|
Natural Copper
| 0.6mm - 0.7mm | Solder Joint / Standing Seam | Heritage restorations, traditional masonry structures, and prominent coping details. |
|
Prefalz Aluminium
| 0.7mm - 1.0mm | Expansion Joint with Internal Splice | Modern villas requiring RAL color-matched trim details. |
|
Greencoat PLX Steel
| 0.6mm | Standing Seam | Robust, highly cost-effective framing profiles with excellent color-stability. |
Request a Custom Parapet Capping Specification
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Why Specify Metal Parapet Capping?
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Ultimate Weather Barrier
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Precision Drip Line
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Thermal Jointing
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Clean Visual Trim
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Our Precision Process
Substructure Inspection & Pitch Verification
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Continuous Anti-Rattle Clip Fixing
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Expansion Joint Jointing
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Seaming & Custom Corner Detailing
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Technical Specifications
Standard profiles, drip margins, and compliance standards for UK parapet wall capping designs.
All capping supports must feature a minimum 1:40 fall sloping inward toward the flat roof membrane to prevent external staining or water run-off down the facade.
Features a minimum 30mm vertical drip edge overhang with an anti-capillary hook profile, keeping rainwater discharge clear of the external brickwork or render.
Incorporates internal backing splice plates with double-bead EPDM sealant, allowing a standard 6mm gap for thermal expansion without compromising integrity.
Provides structured underlay separation to enable continuous ventilation beneath zinc and steel sheets, eliminating underside moisture buildup.
Frequently Asked Questions
Why is a slope or fall necessary on parapet wall capping?
A fall prevents water from pooling on the metal surface. Sloping the capping inward ensures that rainwater drains directly onto the roof membrane instead of cascading down the outer wall facade, which would cause staining, moss growth, and potential masonry damage.
How does the capping accommodate seasonal temperature expansion?
Metal lengths expand and contract significantly. We install continuous, hidden hook clips rather than screwing directly through the sheet, allowing the capping to move freely. At joints, we use internal splice plates with precise gaps to prevent bucking or split seams.
Can the capping match the exact color of our windows or cladding?
Yes. Our pre-coated aluminium and Swedish Greencoat steel products are available in a complete range of architectural RAL colors (e.g. Anthracite Grey, Black, Slate Grey) to ensure a perfectly seamless trim outline matching your glazing.
Parapet Capping Showcase
Bespoke Zinc Coping & Capping, Hampshire Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation.
Anthracite Aluminium Wall Capping, Surrey Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation.
Ready to Specify Parapet Capping?
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