The Challenge – Stone cleaning and wood stripping within a tight deadline
The client had just bought the church and has a strict time scale for opening. The mobile soda blast cleaning teams were asked to carry out several aspects of the project including stone restoration and roof repairs. This required Soda blasting all the external surfaces to clean the sandstone and cut stone surfaces, soda blasting the internal timbers and varnished wooden ceilings and wall panelling to remove the aged paint and varnish coatings.
We endured the worst weather conditions for many years which caused huge changes to the works programme, with lots of the works being completed outside and up to almost 30 meters in height. There were many safety factors to take care of when lifting and working on the platforms. The internal works had to be carried out from manual towers, only after it was discovered that the floor could not support the use of any machined or powered access lifts. To add to the workload, there were roof tie bars spanning the main room where we needed to access the ceiling, which meant having to dismantle and erect the cleaning towers on a daily basis.
We liaised with the local authority’s conservation architect to approve the works programme.
We used the mobile soda blast cleaning method with fan type nozzles at pressures of 2 bars to remove the surface varnish and other coatings from the ceilings and wall to meet the client’s desired finish.
To remove graffiti from the stone and engineered face brick, we administered a pollutant using both hot box doff cleaning and wet soda blast cleaning using a Vortex II Blast Head and just 1.5 bar air pressure.
“I would like to thank all at APT for the hard work and flexibility in delivering this project on time and in overcoming some of the abnormalities suffered with recent weather and on site movements of contractors. I look forward to working with you in the future on similar projects.”