EXTERIOR ALUMINUM SIDING RESTORATION
Evidence before coating expansion
THE QUESTION
Could a variable, previously coated aluminum surface accept additional coating without repeating an earlier adhesion problem?
Field records describe oxidation and chalking, coating release during cleaning, and different responses from one area to another. Rather than assuming the entire exterior had the same condition, the work was organized by preparation state and test evidence.
Existing coating, chalk transfer, localized film release and environmental exposure were documented. Original application history remained partly unknown.
Cleaning quality affects primer adhesion; primer adhesion affects whether topcoat testing can proceed. Sun exposure and substrate temperature limit suitable work periods.
The cleaned control area was compared with a separately prepared PrimeRx patch. Chalk checks, tape pulls and a controlled topcoat trial preceded any broader coating decision.
Repeated tape checks showed no obvious broad PrimeRx film release in the documented patch. The initial topcoat photographs showed no immediate adverse reaction; durability over time was not established.
Field-verification update · Primer/topcoat test report · Zone and temperature records
The recorded observations support limited, condition-based decisions—not a claim that every coating layer or elevation was verified, and not proof of long-term service life.
