Left: before treatment Right: after treatment

Sharp indent: Left, before treatment Right, after treatment

Distorted tear before treatment

During treatment

After treatment

Loss in canvas, before treatment

During treatment with prepared insert

Reverse during treatment

After treatment

Inserts and Patches

During my structural treatment course, I also repaired the canvas support of a modern oil painting. Local deformations in the canvas were flattened with humidification. Moistened blotters were applied to the reverse of the canvas, while a mylar barrier was placed on the paint surface. Weights were placed on the deformations while the canvas was rested on a flat built-up support. This process was repeated until the deformations were relaxed. Remaining canvas threads were aligned during flattening to recover much of the original surface and secured with methylcellulose adhesive. These small tears required local supports to hold the canvas surface at tension. Next, Cotton fibers were applied across the tear with an acrylic adhesive to provide appropriate tension and supported with a polyester fabric.  


A canvas insert was made to fill a loss in the original support. A modern cotton canvas of similar dense weave texture was selected and cut to fit the loss using a Mylar template. Loose edge threads were smoothed and secured in place. The insert was aligned, and its edges adhered with textile welding powder. Further support was added with tensioning threads and a covering patch of polyester fabric.