Restoration Case Study

Cheah Yew Saik: "Untitled,2013" Restoration

Ref: TPA281-2026-005 Tony Ng Conservation Studio

Artist

Cheah Yew Saik

Date

2013

Medium

Oil on Canvas

Dimensions

75 x 90 cm

Location

Private Collection
Return to Treatment Archive

I. Comparative Evidence

Condition Before Treatment
Overall State: Before Treatment
Condition After Treatment
Overall State: After Treatment

II. Condition Summary

Visual Description: A cityscape depicting a river scene with an arched bridge in the foreground and classical European architectural buildings in the background. The composition includes flowing water with a small boat, trees along the riverbank, and soft atmospheric perspective. The palette is dominated by cool tones, with visible brushstrokes contributing to a slightly impressionistic character.

Historical Context: Cheah Yew Saik, born in Kedah in 1939, is a pioneering figure in Malaysian art and education. A graduate of the Nanyang Academy of Fine Arts (1961) and Stoke-on-Trent College of Art, England (1965), where he was awarded "Outstanding Student of the Year".

Condition Issues:

  • Fine micro-cracking within the paint layer
  • Embedded brownish deposits within fissures
  • Localised age-related cracking (lower-left area)
  • Uneven fluorescence observed under UV examination
  • Mildly acidic pH readings across surface and support

III. Treatment / Preventive Measures

No interventive restoration treatment was undertaken.

Limited preventive measures were carried out within the framework of the MTC model. These included gentle surface cleaning using non-aggressive methods to reduce superficial contaminants.

An isolating layer of 10% Paraloid B-72 was applied as a reversible barrier, which may assist in moderating further material change. No retouching or visual reintegration was introduced.

A sacrificial layer composed of 10% Laropal A81 with 5% microcrystalline wax was applied as a protective measure.

The artwork will be returned to its original environment, with ongoing monitoring planned. Periodic visits, sampling, and observation will be conducted to assess any future changes.

IV. Technical Notes

Cleaning system

Solvent D40, TAC, and Tween 20 were employed as part of the cleaning system.

Isolation layer
Paraloid B-72
Final varnish
Laropal A81, Microcrystalline wax

V. Technical Documentation

Technical Doc
Fig. 01 UV examination detail showing areas of uneven fluorescence.
Technical Doc
Fig. 02 UV examination detail indicating variation in fluorescence across the painted surface.
Technical Doc
Fig. 03 Moisture reading taken from the stretcher on the reverse.
Technical Doc
Fig. 04 Microscopic view of canvas fibres showing yellowing and particulate matter.
Technical Doc
Fig. 05 Surface pH measurement recorded during examination.
Technical Doc
Fig. 06 Detail of paint surface with visible cracking and texture variation.
Technical Doc
Fig. 07 Microscopic detail showing embedded brownish deposits within the paint layer.
Technical Doc
Fig. 08 Close-up of paint surface showing micro-cracking and material alteration.

Statement of Conservation Integrity

Authorized Disclosure: This case study is published under strict contractual agreement and with explicit consent. All proprietary details regarding ownership remain redacted to ensure collector privacy. While all care is taken according to international conservation ethics, art conservation involves inherent risks.

Scientific Objective: We aim to demystify art conservation through empirical evidence, proving that restoration is a balance of stabilization and historical preservation rather than aesthetic renewal.

Heritage Contribution: This record serves as a public teaching case, aiding in the creation of a technical knowledge base for the preservation of Malaysian Art Heritage. This treatment is performed under the Tony Ng Conservation Studio Transparency Education Initiative (Pilot Project Artwork No. 005).

© 2026 Tony Ng Conservation Studio. All rights reserved.

Special Initiative
Transparency Education Initiative
View Details
Education Partner Support: Painting up to 60% / Sculpture 30% Collaboration Rate
Selected restoration projects may choose to participate as Education Partners. In exchange for documenting the process as a public case study (with sensitive details redacted), the studio provides substantial support on professional fees.
Core Purpose
Designed to improve public understanding of conservation ethics and restoration science through real-world documentation.
Support Rates
  • Painting Restoration: Up to 60% support on service fees
  • Sculpture Restoration: 30% support on service fees for selected cases
  • Public Access: Before/after comparisons, technical images, and care advice