Case Study: Over-Clad & Insulated Roof Installation – Liverpool

Client: Commercial Property Owner
Location: Liverpool, UK
Service: Over-Cladding & Roof Insulation

Project Overview

Cals Construction was contracted to refurbish the existing roof of a commercial unit in Liverpool. The building’s aging roof was poorly insulated, weather-worn, and in need of a full upgrade to improve energy efficiency, reduce maintenance, and enhance overall appearance.

Our Approach:

Initial Assessment & Planning:

We conducted a full roof survey to assess the condition of the existing structure. Working closely with the client, we recommended a full over-clad solution — designed to extend the roof’s life, improve thermal performance and avoid the disruption of a complete strip-and-replace.

Installation:

The team installed a high-performance insulated roofing system over the existing roof, ensuring full compliance with current building regulations. New purlins and fixings were integrated into the structure to support the over-cladding and provide a seamless, weather-tight finish.

Health & Safety:

All work was completed while the site remained operational. Safety was paramount, with edge protection, waste management, and minimal disruption to day-to-day business activities built into the delivery plan.

The Result:

The completed roof not only transformed the building’s thermal efficiency but also gave it a clean, modern finish — with improved weather resistance. The client now benefits from a warmer, dryer, and more energy-efficient building with a reduced need for ongoing maintenance.

Delivered on time and within budget, this project highlights Cals Construction’s capability in delivering efficient, long-lasting roofing solutions that don’t compromise on quality or client convenience.