Structural Repair Specialists in UK | ASRS

When foundation settlement has resulted in cracked or buckled walls, the Chance Helical Pile Foundation System, combined with the Helibeam System of Masonry Repair and Reinforcement, offers a technically superior and cost-effective alternative to more expensive, disruptive and time-consuming methods of stabilisation that require extensive excavations.

ASRS helps in overcoming commercial subsidence problems. Chance Helical Pile & Helibeam System. Efficient stabilization & minimal excavations.

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This beautiful cottage in Berkshire is believed to have been built around 1730 and has a number of old and more recent additions.

The property was suffering from external and internal cracking throughout. Much of the cracking had been caused by differential movement. This occurs when different sections of the building, in this case, later additions, are built on separate foundations. There can be a difference between the rate and the amount that the foundations settle, which causes separation and cracking between the walls. The cottage was also suffering from brick arch lintel failure, which caused extensive internal and external cracking between the windows of the ground and first floor, both to the front and rear.

Following a site survey, our engineer designed a repair specification comprising of masonry beaming, multiple crack repair methods, and pinning.

Commercial Structural Repair Services Projects

The Challenge

ASRS were consulted to carry out a wall tie investigation to a large commercial property that had no obvious signs of movement other than one panel of masonry had leaned outwards 80mm at the top of the panel. After an extensive survey it was discovered the inner and outer leafs did not have sufficient wall ties to connect the two skins of masonry.

The Solution

ASRS carried out numerous tests and endoscope surveys to assess the existing ties. Pull out tests were carried out on various remedial wall ties and the Helifix resi-tie achieved the best pull out results achieving pull out ratings at over 2.5KN’s. The masonry was drilled only requiring a 12mm hole and the tie installed using portable drills and then resin fixed on the outer leaf.

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We are excited to announce the opening of our new office in Darlington, marking a significant milestone in our commitment to providing exceptional service across the UK. Our commitment to excellence in structural repair services has always extended far beyond our South West roots, The trust and increasing demand from clients across the United Kingdom have been the driving force behind our latest strategic expansion.

As a company rooted in the South West, with existing offices in Martock, Bristol, and London, we have long recognised the importance of being accessible to all our clients. Our new Darlington office will enable us to better serve our customers in the North, ensuring that we maintain our high standards of service and responsiveness. This expansion comes as a direct response to the growing volume of projects we have undertaken in this area, and it reflects our unwavering commitment to meeting the needs of our clients.

As you are probably aware all social housing is to be brought up to the Decent Homes Standard by 2010. Norwich City Council approached ASRS, who were contracted to Lovells Partnership, to help carry out their window replacement program.

Property Defect

Due to the existing ground floor bay window being load bearing, the window replacement could not be carried out until the masonry above had been stabilised.

Solution

Using Helifix masonry beams, wall ties and stainless steel threaded bar, ASRS were able to fully stabilise the masonry above enabling the replacement of the bay window.

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The Problem

A local primary school close to our head office contacted ASRS to provide a specification and repair method to the concrete surrounds to a block of classrooms. Our surveyor met the local council on site and performed a hammer test to identify the worst areas of oxidisation.

The Solution

The repair scheme for this project was specified due to the oxidisation of the steelwork resulting in the concrete spalling and falling off making it dangerous for the pupils if the repairs were not to take place.

ASRS specified hacking off the loose and spalling concrete, cleaning the exposed steelwork and apply a zincrich primer to stop corrosion and then apply a high strength concrete repair mortar.

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The Challenge

ASRS were called in to provide a specification and repair scheme to part of a castle that is suffering from subsidence. The cause of the problem could not be ascertained until a full soil investigation had been completed.

ASRS repaired the castle using micro piles suffering from subsidence. We provided a specification and repair scheme to restore the masonry's structural integrity.

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Revitalising a Historic Property in the Heart of Warwickshire

Faced with significant structural challenges, the owners of Leasow Farm in Whichford, Shipston-on-Stour, sought ASRS’s expertise for an extensive restoration project. Recognised for our proficiency in large-scale masonry repairs, we were well-equipped to address the complexities of this historic rural estate.

The Challenge:

Leasow Farm, a sprawling agricultural property with multiple buildings, was grappling with extensive cracking and structural instability across 17 distinct areas. The project scope was vast, encompassing Areas A through L, the Dairy Building, Dividing Walls, and various elevations. Each zone presented unique challenges, necessitating a tailored approach to ensure comprehensive structural reinforcement.

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Cracks in walls, around windows and doors, stepped cracks in brickwork, and other structural issues can occur for various reasons and often cause concern for property owners or tenants.

Cracks in masonry are commonly caused by factors like ground movement, subsidence, heave, environmental conditions (such as freeze/thaw cycles), increased loads or stress, replacement of doors or windows, drain failures, and the addition or removal of large vegetation. ASRS Ltd are helifix crack repair specialists, expertly diagnosing the cause of these cracks and designing effective solutions.

As certified installers of Helifix Masonry Repair Systems, we provide Helifix insurance-backed guarantees for most projects. Additionally, we offer expert advice, free site visits, and tailored structural programs. When masonry has cracked or failed, the Helifix Helibeam System offers horizontal bed-joint reinforcement, eliminating the need for demolition and rebuilding. This system utilizes high-tensile stainless steel helical bars combined with cementitious, thixotropic grout to securely bond the bars to the masonry.

Bed joint reinforcement, also known as masonry beaming, ties the masonry together to form deep beams that help redistribute structural loads. Additional helical ties and fixings can be added as needed for crack stitching and to provide lateral and vertical restraint, completing the system. This approach is suitable for all masonry types, including brick, block, and stone structures. The Helibeam System provides a structurally sound, cost-effective alternative to underpinning and other traditional repair methods, with much less disruption and stress. It minimizes impact on the ground, building, and occupants, and after repointing and finishing, the building remains virtually unmarked. 

When Newport Transport and Newport Council faced extensive structural challenges at their facility, they turned to ASRS for our unparalleled expertise.

ASRS helped Newport Transport and Newport Council restoring resilience and overcome structural challenges. This project showcased our ability to tackle complex issues!

The Challenge:

Newport Transport’s facility, crucial to the city’s public transportation network, exhibited widespread signs of structural distress. Cracking and spalling in masonry and concrete threatened the long-term integrity of several buildings, including the main office, multiple bus sheds, and auxiliary structures.

ASRS Solution:

Drawing upon our extensive experience, we crafted a bespoke solution utilising the innovative Helifix system and other advanced repair techniques. Our plan aimed to distribute structural loads evenly, reinforce existing cracks, and prevent further deterioration across the entire complex.

Comprehensive Repair Strategy:

1- Office Building Complex:

Installation of 22 twin and single bands of Helibar stainless steel reinforcing

Strategic placement of 20 single Helibar bands across existing cracks

Application of Natcem 35 concrete repair mortar to address spalling

Meticulous crack injection with thixotropic cementitious grout

2- Bus Sheds (Multiple Elevations):

Extensive Helibar reinforcing: 30 single bands on left flank, 4 twin bands on rear elevation.

Installation of 244 Helifix pinning Cem ties to secure coping stones.

Strategic placement of 31 Helifix Cem ties for additional stabilization.

Targeted rebuilding of compromised masonry sections (over 3.2m² total area).

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ASRS Ltd uses lateral restraint wall ties to connect masonry to floor or ceiling joists, effectively securing both together. The process involves drilling a hole in the masonry, aligned with the timber joists. The leading edge of the restraint tie, shaped like a drill bit, cuts into two or more joists as it is installed. The masonry end is then fixed with resin, creating a solid bond. Finally, the hole is filled with a colour-matched mortar to achieve an invisible finish.

Additional repair methods, such as crack stitching and bed joint reinforcement, may be needed to address cracks or reinforce the masonry. Bowed walls and outward movement are often due to weak construction and insufficient connection between the masonry and joists. This lack of lateral support is a common problem in older buildings, often seen in the form of bowing or bulging walls.

End-of-terrace gable and side walls also commonly lack lateral restraint when floor and ceiling joists run parallel to the masonry without any physical connection, leading to outward movement and cracking, especially under increased structural loads. We offer free site assessments in Bristol for both residential and commercial clients to evaluate the issue and recommend a suitable repair plan tailored to the project’s requirements. ASRS is an approved installer of the Helibeam System, providing cost-effective, non-invasive, and discreet solutions for masonry stabilisation.

The concrete ceiling at the Lloyds Bank premises in 10 Canons Way, Bristol, was exhibiting signs of deterioration, with broken and spalling concrete materialising in various areas. This posed a potential structural risk and safety hazard, necessitating immediate remedial action.

ASRS Solution:

To restore the deteriorating concrete ceiling, ASRS Ltd implemented a comprehensive remedial scheme. The concrete repair process involved breaking out damaged areas, installing new rebar for reinforcement, and applying Natcem 35 concrete repair mortar to offer resistance against cracking and spalling. The site was cleaned upon completion. Chasing works were also undertaken, with 60m of concrete spacers chased out and new rebar placed. Disturbed areas were made good for a seamless finish. Through concrete removal, rebar installation, mortar application, and chasing works, ASRS Ltd successfully restored the ceiling’s structural integrity, ensuring safety and longevity.

Crewkerne Library Masonry Repair Is Restored Without Disrupting Services

ASRS Executes Large-Scale Repairs for Valued Educational Institution

Riverston School in Lewisham entrusted ASRS with a significant structural restoration project, recognising our established track record in educational and public sector works. This extensive undertaking highlighted our proficiency in managing complex structural issues within educational settings.

The Challenge:

Riverston School, a key educational facility in Southeast London, was grappling with widespread cracking and downward movement across multiple areas of its structure. The school required a comprehensive solution to address both immediate structural concerns and ensure long-term stability.

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ASRS LTD: Common Helifix Crack Repair Solutions

ASRS offers a comprehensive range of specialist building and structural repair services at affordable prices. Our expert team provides permanent, cost-effective solutions for all structural issues, from cracks around windows to subsidence. With free surveys, repair specifications, and independent, insurance-backed guarantees, ASRS ensures your project is completed on time and within budget. We collaborate with structural engineers, loss adjusters, and housing associations to deliver top-class services. Contact us today for more information or visit our FAQ page.