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Aluminium Capping

Protective aluminum capping for parapets, lintels, sills & trim

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Why Choose Allstate?

NYC DOB Licensed & Insured

Free Written Estimates

5-Year Workmanship Warranty

Local Law 11 Expertise

Clean Jobsite Guaranteed

About This Service

Professional Aluminium Capping in NYC

Aluminum capping is a cost-effective, long-lasting solution for protecting vulnerable masonry surfaces from water intrusion. Allstate Construction fabricates and installs custom aluminum caps for parapet walls, window sills, lintels, cornices, and any horizontal masonry surface that needs waterproof protection.

The Allstate Difference

We fabricate aluminum capping in-house, ensuring perfect fit and proper hemmed edges. No outsourcing, no delays, no gaps.

What's Included

Our Aluminium Capping Services

Parapet wall aluminum capping
Window sill aluminum covers
Lintel aluminum protective caps
Cornice and ledge aluminum covers
Custom color-matched aluminum (Kynar finish)
Standing seam capping systems
Hemmed edge and drip edge details
Stainless steel fastening systems
Sealant and flashing integration
Aluminum trim and fascia cover

Our Process

How We Handle Your Aluminium Capping Project

Step by step — from first contact to finished job

Measurement

Precise measurement of all surfaces. Templates made for complex or curved profiles.

Fabrication

Aluminum sheets cut and formed to exact dimensions at our shop with proper hemmed edges and drip profiles.

Substrate Prep

Existing surface cleaned, primed if needed, and sealant bed applied.

Installation & Sealing

Caps installed, secured, and all joints sealed with elastomeric sealant for a fully watertight result.

FAQs

Common Questions About Aluminium Capping

We offer mill finish, painted aluminum, and Kynar-coated aluminum in any standard RAL color. Most common choices are white, bronze, dark gray, and black.

Properly installed aluminum capping lasts 30–40+ years. The aluminum itself will not corrode in NYC's environment.

Yes. Aluminum capping is a popular, more affordable alternative to replacing natural stone or precast coping on parapet walls.