Project – Michael Saddler Building, Leeds University
Client – Leeds University
Location – Leeds
Materials – Sika Repair Products
Client Testimonial
“BOSA Contracts Ltd carried out a large number of concrete repairs to the soffit of the Michael Saddler Building at the University of Leeds in both a professional and competent manner.
Whilst on site the contractor was subjective to sub-zero temperatures which made certain elements of the work impossible. The contractor managed the weather in an effective manner to ensure no delay to the programme and a high-quality finish.
All in the project was carried out in a safe and competent manner and I would recommend the use of Bosa to my colleagues and the wider Building Surveying network.”
Adam Ives
Leeds University Building Technical Officer
About the project:
Bosa Contracts were called in to carry out concrete repairs to the roof soffits on the Michael Saddler building at Leeds University. Originally built in 1939, and the largest building on the campus, the external concrete soffits of the building were suffering from deterioration due to the buildings age and the adverse effects of weathering.
The repairs were to be carried out using Sika Monotop 615 repair mortar alongside Sika 610 reinforcement primer. These materials were chosen due to their specific qualities which matched the project challenges, these included their ability to adhere to overhead and vertical surfaces, and the 610’s built in corrosion inhibitors which would provide longevity to the repairs.
Challenges faced during the project included working around the campus without causing any disruption to the daily operations. To ensure that that facility staff and students were unaffected by the works, the noisy elements where carried out during weekends. The British weather was the other main challenge, works commenced in January and sub-zero temperatures where encountered, these temperatures had to be managed to achieve the desired timeline.
Using grinders, the perimeter of each of the defective areas of concrete were saw cut out to a minimum depth of 10mm. Medium duty grinders were then used to break out these detective sections taking the concrete back to sounds construction.
Existing reinforcement bars received mechanical clean to remove rust. Following this coats of Sika 610 slurry was hand applied using a brush covering all areas of the reinforcement bar.
The Sika 610 slurry/bonding coat was then applied to the substrate, on top of this the Sika 615 Repair Mortar was applied. On any repairs of a depth that exceeded 40mm this process was repeated until the finished levels matched the existing profile. All of the repairs were completed using a plastic float, leaving a level and smooth finish.
After a partial cure of the Repair Mortar a drip detail was cut out which allows for water to fall away from the structure and therefore preserves the concrete building for longer.
Upon completion of the repair works the entire areas received a coat of Sika 620 to achieve the uniformed finish requested by the client.
Project – Michael Saddler Building, Leeds University
Client – Leeds University
Location – Leeds
Materials – Sika Repair Products
Client Testimonial
“BOSA Contracts Ltd carried out a large number of concrete repairs to the soffit of the Michael Saddler Building at the University of Leeds in both a professional and competent manner.
Whilst on site the contractor was subjective to sub-zero temperatures which made certain elements of the work impossible. The contractor managed the weather in an effective manner to ensure no delay to the programme and a high-quality finish.
All in the project was carried out in a safe and competent manner and I would recommend the use of Bosa to my colleagues and the wider Building Surveying network.”
Adam Ives
Leeds University Building Technical Officer
About the project:
Bosa Contracts were called in to carry out concrete repairs to the roof soffits on the Michael Saddler building at Leeds University. Originally built in 1939, and the largest building on the campus, the external concrete soffits of the building were suffering from deterioration due to the buildings age and the adverse effects of weathering.
The repairs were to be carried out using Sika Monotop 615 repair mortar alongside Sika 610 reinforcement primer. These materials were chosen due to their specific qualities which matched the project challenges, these included their ability to adhere to overhead and vertical surfaces, and the 610’s built in corrosion inhibitors which would provide longevity to the repairs.
Challenges faced during the project included working around the campus without causing any disruption to the daily operations. To ensure that that facility staff and students were unaffected by the works, the noisy elements where carried out during weekends. The British weather was the other main challenge, works commenced in January and sub-zero temperatures where encountered, these temperatures had to be managed to achieve the desired timeline.
Using grinders, the perimeter of each of the defective areas of concrete were saw cut out to a minimum depth of 10mm. Medium duty grinders were then used to break out these detective sections taking the concrete back to sounds construction.
Existing reinforcement bars received mechanical clean to remove rust. Following this coats of Sika 610 slurry was hand applied using a brush covering all areas of the reinforcement bar.
The Sika 610 slurry/bonding coat was then applied to the substrate, on top of this the Sika 615 Repair Mortar was applied. On any repairs of a depth that exceeded 40mm this process was repeated until the finished levels matched the existing profile. All of the repairs were completed using a plastic float, leaving a level and smooth finish.
After a partial cure of the Repair Mortar a drip detail was cut out which allows for water to fall away from the structure and therefore preserves the concrete building for longer.
Upon completion of the repair works the entire areas received a coat of Sika 620 to achieve the uniformed finish requested by the client.