Case 2
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- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Good Practices
Rate of corrosion can be reduced by coating iron fixtures with tin or using fixtures made of non-corrosive metals (e.g. stainless steel, alloy steels, or alloys of copper or of nickel). These provide additional strength without danger to the stone. Rate of corrosion may be accelerated after the coating deteriorates due to the electrolytic action occurring between the metals.
Nickel alloys are less expensive than copper.
The application of sealer can prevent such stains from being trapped within the pores of the stones.
Sealers should have the following properties:
- virtually odourless
- non yellowing
- deep penetrating protection
- weather resistant
- maximum stain resistance.