020 3005 2873
Portland Stone Staircase Structural Repairs – 65–69 Linden Gardens, Notting Hill Gate, London
Project Overview
In October 2025, MGS Restoration Ltd were commissioned to undertake the full structural repair and restoration of three cantilevered Portland stone staircases within a residential property redevelopment at 65–69 Linden Gardens, Notting Hill Gate, London.
The project formed part of a wider three-building restoration programme and involved extensive structural repairs, replacement stone fabrication, crack stabilisation, and specialist Portland stone restoration works throughout the staircases and landings.
One of the principal challenges involved reversing alterations carried out during the 1970s and 1980s, when lift installations had resulted in the removal of many of the original Portland stone step nosings. These historic alterations had significantly affected both the structural performance and architectural appearance of the staircases.
MGS Restoration carefully restored the staircases using a combination of traditional stonemasonry techniques and modern structural repair methods, successfully returning the staircases to a safe, durable, and visually cohesive condition.
Project Details
Location: 65–69 Linden Gardens, Notting Hill Gate, London
Project Date: September 2025
Service: Portland Stone Structural Repairs and Restoration
Material: Portland Stone
Building Type: Residential Property Redevelopment
Project Type: Cantilevered Staircase Structural Restoration
Scope: Three Staircases
The Challenge
Each of the three staircases presented different structural and restoration challenges due to decades of alteration, wear, and structural movement.
The most significant issue affected the first staircase, where a lift installation carried out during the 1980s had required the removal of approximately 90% of the original Portland stone nosings across the staircase.
The loss of these nosings not only altered the original architectural profile of the staircase but also weakened the edges of the stone steps significantly.
Additional structural concerns were found throughout the building’s staircase landings. Many of the landings had been originally constructed at only 100mm thickness, making them vulnerable to cracking and structural stress over time.
Several areas also suffered from heavy impact damage, material loss, and deteriorated stone edges requiring reinforcement and rebuilding.
The Restoration Process
Manufacture and Installation of New Portland Stone Nosings
To restore the original staircase profile, MGS Restoration carefully sourced matching Portland stone and manufactured bespoke replacement nosings within our workshop.
Each new stone section was precision-cut to match the original dimensions and detailing of the historic staircase.
The new nosings were then delivered to site and mechanically face-fixed into position using specialist fixing systems to ensure maximum structural stability and long-term durability.
In total, more than 20 new Portland stone nosings were supplied and installed throughout the project.
Structural Landing Stitching Repairs
Several staircase landings throughout the property had developed significant structural cracking due to the thin original construction.
One particularly large landing required specialist structural stitching repairs in two separate locations.
Our team installed 8mm stainless steel threaded reinforcement bars, which were fixed into place using specialist anchor resin systems. Once secured, the repaired areas were rebuilt and finished using a high-strength structural concrete repair mortar.
This method restored structural integrity while allowing the repaired surfaces to be decorated and finished as part of the wider refurbishment works.
Stone Reinforcement and Build-Up Repairs
Throughout the staircases, extensive chip repairs and stone build-up works were required.
Where localised repairs were insufficient on their own, stainless steel wire reinforcement was bonded directly into the Portland stone to create a secure structural foundation before repair mortars were applied.
For larger damaged areas, additional reinforcement using 6mm stainless steel rods and bars was installed to rebuild and stabilise the stone sections fully.
These methods ensured that both the appearance and structural strength of the staircase elements were successfully restored.
Final Stone Restoration and Finishing
Following structural stabilisation and repairs, all Portland stone surfaces were carefully refined and finished to achieve a consistent appearance across the staircases.
The completed works restored the original proportions and visual continuity of the cantilevered staircase design while ensuring the staircases met modern structural performance requirements.
Materials and Techniques Used
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Bespoke Portland stone fabrication
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Mechanical face-fixed stone installations
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Structural crack stitching systems
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Stainless steel threaded reinforcement bars
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Chemical anchor resin systems
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High-strength structural repair mortars
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Stainless steel stone reinforcement methods
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Historic staircase restoration techniques
The Results
The completed restoration successfully transformed all three cantilevered Portland stone staircases, reinstating their original architectural character while providing long-term structural stability.
The newly manufactured Portland stone nosings restored the original staircase profiles lost during previous alterations, while the structural stitching and reinforcement works stabilised the weakened landings and damaged stone elements.
Through a combination of specialist stonemasonry, precision fabrication, and modern engineering techniques, MGS Restoration delivered a comprehensive structural restoration programme that respected the historic fabric of the building while ensuring safe and durable performance for future use.
Portland Stone Staircase Restoration in Notting Hill Gate
This project demonstrates the level of technical expertise required when restoring structurally compromised cantilevered stone staircases within historic residential properties. Through careful fabrication, reinforcement, and restoration, MGS Restoration Ltd successfully preserved the architectural integrity of these important staircases while delivering modern structural performance.
Contact MGS Restoration
If your historic staircase or natural stone structure requires professional structural repair or restoration, our experienced team can help.
MGS Restoration Ltd provides specialist stone restoration and structural repair services across London, working with Portland stone, terrazzo, marble, limestone, and other historic materials within residential, commercial, and heritage properties.
Contact us today to discuss your project or arrange a consultation.
Address
MGS Restoration ltd
167-169 Great Portland Street,
5th Floor,
London,
W1W 5PF
Phone
020 3005 2873
