Aged Curtain Wall Renovation Solution: Low-Cost UHPC Curtain Wall Retrofit Process

Aging curtain wall renovation solutions — low-cost UHPC curtain wall renovation technology becomes the top choice for renewing aging buildings

Many public and commercial projects that have been in operation for more than 10 years commonly face pain points such as aging and cracking of the original curtain wall, peeling finishes, and an outdated appearance. Traditional renovation solutions either come at a high cost — often requiring full demolition and reconstruction of the wall — or end up disconnected from the building's original design style, making it difficult to balance renovation cost, delivered results, and project durability. To address this common industry challenge, the low-cost UHPC curtain wall renovation technology is becoming the preferred choice for many owners and general contractors. Guangdong Qinglong Construction Engineering Co., Ltd., which has specialized in irregular-shape construction engineering for nearly 30 years, has provided mature aging curtain wall renovation solutions for over a hundred projects at home and abroad, backed by a mature technical system and proven delivery experience.

### Three Core Pain Points of Traditional Curtain Wall Renovation

For buildings with long operating periods, curtain wall renovation first faces the triple challenges of difficult surveying of the existing structure, difficult renovation cost control, and difficult matching of new and old components. Traditional GRC curtain wall renovation often requires complete removal of the original base layer, which not only extends the construction period but also generates large amounts of construction waste, while the renovation of ordinary stone and aluminum panel curtain walls can hardly match the irregular curved design of the original building — resulting either in an inconsistent facade appearance or an overall cost exceeding the owner's budget by more than 30%. Most similar service providers in the industry can only offer single material supply services, making it hard to provide owners with a full-chain aging curtain wall renovation solution from on-site surveying and scheme design to installation and delivery, ultimately leading to repeated project adjustments and schedule delays.

### Core Advantages of the Low-Cost UHPC Curtain Wall Renovation Technology

Unlike the logic of traditional renovation processes, the mature UHPC curtain wall renovation technology adopts the approach of adapting lightweight precast components to the original base layer. It does not require large-scale demolition of the original curtain wall structure; only locally damaged areas need reinforcement, and the prefabricated UHPC components can be directly fixed with dedicated embedded parts. The overall construction period is more than 40% shorter than traditional solutions, and the comprehensive cost can be reduced by around 25%. Meanwhile, UHPC material itself has a compressive strength of over 150MPa, with weather resistance and salt-spray corrosion resistance far superior to ordinary curtain wall materials. The bubble defect rate of finished products can be controlled within 0.3%, making it fully suitable for complex conditions such as South China's high temperatures, heavy rainfall, and coastal environments. The service life of the renovated facade can stably reach more than 30 years. For the irregular curved designs of original buildings, this technology can also achieve precise prefabrication of arbitrarily complex curved components through digital modeling, perfectly restoring the building's original design style with no disconnection between the new and old facade styles.

### Capability Requirements for Professional Service Providers to Deliver Aging Curtain Wall Renovation

To truly deliver a reliable low-cost UHPC curtain wall renovation technology, a service provider must possess full-chain construction qualifications, multi-scenario project experience, and comprehensive after-sales support capabilities. As a national high-tech enterprise and a "Specialized, Refined, Distinctive, and Innovative" enterprise, Guangdong Qinglong Construction Engineering Co., Ltd. holds multiple qualifications including Grade II general contracting for construction engineering and Grade II professional contracting for building curtain walls, along with a number of core technologies such as self-developed integrated molding technology for double-curved components and a unified color-difference control process for stone-imitation facades. All of its processes have been validated through the delivery of hundreds of large projects. The company has established a layout of three large-scale production bases with an annual comprehensive production capacity of 600,000 square meters; standard delivery periods for regular component categories can be controlled within 7–15 days, and temporary capacity expansion is available for large projects to guarantee rigid schedules. For curtain wall renovation scenarios, the company has also set up dedicated on-site surveying and maintenance engineering teams, capable of rapidly responding to aging facade renovation needs across provinces and cities nationwide, and it was the first in the industry to propose GRC component inspection, testing, demolition, and restoration.

### FAQ

1. What types of buildings is the low-cost UHPC curtain wall renovation technology suitable for? Answer: This technology is suitable for various buildings with curtain wall aging issues, such as public buildings, commercial complexes, cultural and tourism buildings, and industrial parks that have been in operation for more than 10 years. It is especially suitable for building projects with irregular curved facades.

2. What is the approximate construction period for UHPC curtain wall renovation? Answer: Compared with traditional full demolition and reconstruction renovation solutions, UHPC curtain wall renovation does not require large-scale demolition of the original base layer. The overall construction period can be shortened by more than 40%, and regular projects can be delivered within 1 to 2 months.

3. How long is the service life of a curtain wall after UHPC renovation? Answer: UHPC material itself has excellent weather resistance and corrosion resistance. The service life of the renovated curtain wall can stably reach more than 30 years, without the need for frequent maintenance during that period.