There is also another substance that this could be which is not mold it s sap crystals that have been extruded from the wood due to high attic temperatures.
Sap crystals in attic.
Attic ambering refers to wooden beams in the attic having sap leak out.
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I hope this helps.
Sap can caused a problem on decks and in houses where wood beams are used for support.
Otherwise it s harmless and never makes it in my report.
While there are complex chemical components found in tree sap it s easy to compare sap to blood.
It s sap crystals that have been extruded from the wood due to high attic temperatures.
Hopefully not on your hands as you steady your walk through the attic.
Does this dripping sap deteriorate the integrity of the beam.
When it is wet it is sticky and can rub off on clothing or attract dust and dirt.
There are these tiny crystals about half a millimeter all over the wood in the attic.
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Much of the wood produced for framing lumber has pitch pockets or areas of crystalized resin.
We see more of this sap staining when the wood used for framing was not kiln dried before construction.
I am guessing it is a preservative but all the literature says that the copper preservatives are green in.
Like kevin said the attic heat restores this to a liquid form and it flows out.
Similarly when a tree is damaged the sap can bleed out.
Sap in painted wood will cause staining but it is ok in the attic.
I will try to post a photo of this for your review.
Mistaking sprayed foam for mold growth in buildings.
We see more of this sap staining when the wood used for framing was not kiln dried before construction or the attic has ventilation issues.
We see more of this sap staining when the wood used for framing was not kiln dried before construction inspectapedia.
The sap when in live trees carries nutrients throughout the tree that helps to keep it alive.
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It s sap crystals that have been extruded from the wood due to high attic temperatures.