Specification

Corrosion can become visible in a very
short period of time – weeks or months,
rather than years.
GCP Vycor Deck Protector reduces the
corrosion rates of galvanized connectors in
contact with the new pressuretreated wood
back to the historical level of CCA wood.
Galvanized metal aer 1 month, continuous
wet conditions.
1. Historically used CCA wood, No sign of
corrosion
2. Advanced corrosion, New pressure-treated
wood
3. No sign of corrosion, New pressure-treated
wood with GCP Vycor Deck Protector
4
3.5
3
2.5
2
1.5
1
0.5
0
CCA
ACQ CA-B ACZ AA CQ CA-B ACZ A
Relative Corrosiveness of Wood Preservatives*
OLD PRESSURE-
TREATED WOOD
NEW PRESSURE-
TREATED WOOD
NEW PRESSURE-
TREATED WOOD WITH
GCP VYCOR DECK
PROTECTOR
Self-Adhered Flashings
Galvanized joist hanger attached to ACQ
wood, 7 months; wet conditions.
* Testing conducted by Grace and Simpson Strong-Tie; results
aer 2 months accelerated corrosion testing.
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