Concrete Repairs & Protective Coatings

Northwood, London Borough of Hillingdon, March 2026

Commercial & Industrial

Project overview

Concrete Repair Solutions were appointed to undertake a make-safe façade survey and mastic sealant replacement works to external panel joints at Nuffield Health Cheltenham Hospital.

The scope involved rope access inspection of the building elevations, identification of deteriorated sealant joints, and renewal of mastic sealant to vertical panel joints to maintain weatherproofing and façade integrity.

Works were delivered within a live healthcare environment, requiring careful planning and controlled access.

What we did

Undertook rope access make-safe survey of external elevations

Inspected and assessed vertical façade panel joints

Identified defective and deteriorated mastic sealant

Removed existing sealant to vertical joint locations

Prepared joint interfaces to receive new sealant

Installed new mastic sealant between façade panels

Ensured clean finish and reinstated weather-tight detailing

Technical overview

Nuffield Health Cheltenham Hospital comprises a multi-storey healthcare facility with panelised façade construction incorporating vertical movement and weather joints between panels.

Over time, deterioration of mastic sealant at vertical joints can compromise weather resistance and allow water ingress into the façade system.

Rope access techniques were utilised to safely access and inspect the external elevations without the need for scaffold erection. Identified sealant failures were removed in a controlled manner, ensuring joint edges were properly prepared before installation of new mastic sealant.

Sealant renewal works were completed to 14No. vertical joint locations, reinstating flexibility, movement accommodation and weather protection to the façade system.

Project challenges

Working within a live hospital environment
Maintaining safe access without disrupting hospital operations
Delivering rope access works with minimal impact
Achieving clean and consistent sealant finishes across vertical joints

The outcome

The completed works reinstated the weather-tightness of the façade panel joints and mitigated the risk of water ingress.

Rope access delivery ensured minimal disruption to hospital operations while providing a safe, efficient and cost-effective solution for façade maintenance.

Services demonstrated

Rope access façade inspection
Make-safe surveys
Mastic sealant removal and replacement
Façade weatherproofing
Healthcare facility maintenance
Live environment project delivery

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