Ornate Plasterwork repair

An area of this heavily ornate ceiling at St Johns Methodist church in St Austell had suffered water damage from a previously leaking roof. Although now re-roofed and watertight the damage had already been done and a section collapsed on to the gallery below. The leak had caused some of the wooden laths to rot away and disintegrated the plaster keys that attach the ceiling resulting in the fall.

As is the nature of lath and plaster repairs the most important thing for us to do first was to consolidate the ceiling around the fallen section before we began reinstating anything.

Working in the attic space the back of the ceiling was cleaned and consolidated using a Paraloid acrylic resin, and then cast with Plaster of Paris and hessian attaching the ceiling and laths to the joists. Any rotten joist were strengthened by planting new timber alongside the existing. Once secure we were then able to repair the missing section with new sawn oak laths and haired lime putty plaster. It was decided we replace the missing mouldings in lighter fibrous cast sections to reduce the weight instead of the heavy in-situ run mouldings.

This job was completed under the supervision of Scott &Co in Truro

Ornate ceiling at St Johns

Ornate ceiling at St Johns

Damaged section

Damaged section

Back of ceiling showing lath and keys

Back of ceiling showing lath and keys

Plaster cast bays

Plaster cast bays

Plaster cast bays

Plaster cast bays

Structural repairs

Structural repairs

Strengthening rotten joists

Strengthening rotten joists

New oak laths

New oak laths

Haired lime scratch coat

Haired lime scratch coat

New run mouldings

New run mouldings

New mouldings installed

New mouldings installed

Completed repairs

Completed repairs

Completed repairs

Completed repairs

Completed repairs

Completed repairs