The concept of impregnating rotten and decayed wood with epoxy was first introduced by Morgan Phillips, a Columbia University graduate, back in the mid-1970’s during his work at SPNEA ( Society for the Preservation of New England Antiquities ). The consolidation method made it into The National Park Services’ Preservation Briefs written in the early 1980s. This concept of consolidation was quickly adopted into the commercial market by several manufacturers of epoxy compounds. Sold under the names such as: epoxy primers, penetrators, stabilizers, wood hardeners, and of course, rot consolidants.
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As the days get shorter and the nights cooler, you might find the Dura-Fix Warm Weather material taking longer to cure. What causes this?
This delay in curing is caused by temperatures dropping overnight into the 50’s or lower.
The thinner the layer the slower it takes to cure because the Dura-Fix generates it’s own heat as part of the curing process. Thin layers dissipate the heat, a thick layer retains the heat.
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Epoxies have been used to repair decayed and damaged wood here in the U.S. for at least 4 decades. The first materials that were developed ( and some still in use today ) uses an older epoxy chemistry that relies on micro-balloons to add thickness and to create a paste like consistency.
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When working on older properties the durability of the old growth lumber used to fabricate the architectural elements is superior to lumber available today.
As this quality material gets exposed to the elements of sun and moisture the exposed surface begins to show signs of surface mold, graying and checking.
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