Why the Restoration Was Necessary

An assessment by engineers revealed several critical issues with the wall. Over time, large vertical cracks, degraded mortar, and unstable timber inserts had developed. These defects not only posed structural risks but also detracted from the wall’s visual appeal.

To begin with, significant cracks, particularly on the west end of the wall in the Parochial Garden, had widened to over 20mm. Such gaps raised serious concerns about stability. Additionally, old timber inserts, originally used for structural support, had decayed. This compromised the wall’s overall integrity. The lime mortar, vital for historical structures, had washed out in many areas and had been replaced with inappropriate cement repairs. Unfortunately, these unsuitable fixes had caused further damage over time.

Moreover, the mortar capping on top of the wall was deteriorating, which allowed water to seep in. This water ingress weakened the wall further and encouraged vegetation growth. Finally, loose lime render created safety hazards, as sections could potentially fall onto cars or pedestrians below. Addressing all these issues was crucial for both safety and preservation.

 Parochial Garden Wall showing large cracks

How We Achieved the Restoration

Given the wall’s dual role of retaining the Parochial Garden and standing within a conservation area, our efforts required careful planning and execution. Adhering to best conservation practices was critical, as was using materials that matched the original construction. Here is how we approached this complex project:

First, to tackle the major vertical cracks, we employed Helibar, a helical stainless steel reinforcement. This minimally invasive method allowed us to stitch the wall together, ensuring its structural integrity. In sections where construction quality was particularly poor, such as the top of the wall, careful local rebuilding was carried out. We used elongated granite stones that matched the original materials, maintaining historical consistency.

The decayed timber inserts were another challenge. To restore stability, we removed the timber and replaced it with salvaged bricks and granite stones. This method preserved the wall’s historical character while improving its structural strength. Meanwhile, the deteriorated mortar capping was renewed using a lime-based mortar. This step was essential for protecting the wall from further water damage.

Local repointing, particularly at the base and top of the wall, was completed using lime mortar. Unlike modern cement mortar, lime mortar allows the wall to breathe while stabilising the structure. Furthermore, loose render was carefully removed to prevent accidents, and ivy, along with other vegetation, was eradicated. Clearing these plants not only stopped additional structural damage but also revealed the true condition of the wall.

Throughout the project, our team adhered strictly to conservation guidelines. Specialists trained in historical restoration techniques carried out all the work, ensuring it met the standards for protected structures.

Skilled PMAC craftsman mending Parochial Garden

A Successful Preservation Effort

The completion of this project restored the wall’s structural integrity while enhancing its aesthetic appeal. More importantly, the restoration upheld the historical and cultural significance of the Holy Cross Church and Parochial House. By employing specialised conservation methods and materials, we ensured the wall will endure for generations to come.

We are proud of our team’s dedication to preserving this vital piece of history. Their expertise not only brought the wall back to its former glory but also reinforced our commitment to protecting the past while preparing for the future

Restored Parochial Garden Wall in Dundrum

Get in touch

Our legacy is quality projects we can be proud of. We value the inputs of our customers, our team and our supply chain in reaching positive outcomes. Health and safety to our people and the public is a priority for us and without compromise.

If you are working on a similar project we would love to hear about it. Dont hesitate to call us or send in the details of your project through our contact page at  https://pmac.ie/contact-pmac/ You will also find our FREE downloadable concrete brochure which is a helpful guide.

PMAC is a registered Heritage Contractor and a link to the site can be found below.

https://heritageregistration.ie/heritage-contractors-listing/