Restoration to Bath stone windows and external stone façade

External stone cleaning of  19th Century church

Client: St Kevin’s Church, Harrington Street

Conservation Architect: Michael O’Boyle of Bluett O’Donoghue Architects.

Restoration and conservation works to Bath stone windows and external stone façade

Oil based paint was gently removed internally to allow the Bath stone to breathe once again.

Detailed stone repairs were carried out to window surrounds, stone mullions and tracery. Damaged areas of stone were replaced with stone grafts and Bath stone repair mortar. 

Where possible any existing stone that had fragmented was dowelled back into place.

New Bath stone was used to carry out repairs where stone fragments had crumbled beyond repair. 

Cleaned external stone using DOFF and TORC systems. All cementitious pointing which was facilitating the deterioration of the façade was gently removed and re-pointed in lime mortar.

All weathered and damaged Bath stone boss and mouldings were repaired and reinstated using matching mortar repair 

After specialist clean - P Mac Heritage Contractors

Masonry cleaning and repairs

Pmac breathes new life into building facades and public areas by removing grime, growth, grease, oil and carbon deposits from stone surfaces. Our specialist stone cleaning services cover facade cleaning, walkways, bridges and pavements. We also rejuvenate modern renders such as Monocouche,Techrete and Cladding. These are very thin renders that can’t withstand any pressure cleaning and must be treated with extreme care. If you have grimy and damaged stone or render, we can clean and restore it.

There are a variety of methods used to clean facades depending on the substrate (chemicals, biocides, steam, façade gommage® system – as featured in the video below). Too many buildings are spoiled because the incorrect methods are used.

Heritage Contractors

PMAC projects are very varied. Our legacy is quality projects we can be proud of and the below projects are an example of them. 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

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

The majority of PMAC projects are based in Dublin but we also work all over Ireland. Our wide range of services are available to both residential and commercial clients.