Attic Wood Leaking Sap
You should be able to determine the adequacy of the attic ventilation by direct observation of the ventilation system.
Attic wood leaking sap. Is this normal for this kind of wood and is this cedar. When it is wet it is sticky and can rub off on clothing or attract dust and dirt. To prevent sap from leaking out of deck boards it needs to be finished with paint stain or deck waterproofing. Similarly when a tree is damaged the sap can bleed out.
Attic ambering refers to wooden beams in the attic having sap leak out. Like kevin said the attic heat restores this to a liquid form and it flows out. Much of the wood produced for framing lumber has pitch pockets or areas of crystalized resin. Use a handheld oscillating fitted with.
Hopefully not on your hands as you steady your walk through the attic. It cooks out in the heat and eventually crystallizes. We see more of this sap staining when the wood used for framing was not kiln dried before construction. It s sap crystals that have been extruded from the wood due to high attic temperatures.
The sap when in live trees carries nutrients throughout the tree that helps to keep it alive. Sanding blocks help smooth large flat areas. Some wood has an abundance of sap in it. These materials slow the leakage by clogging the wood grain pores but will not stop it completely.
Treat the knot areas with extra coats of the finishing material. Sap on boards can be a problem. There s a couple support boards for the roof in my attic that have sap dripping out of them. Sap can caused a problem on decks and in houses where wood beams are used for support.
Sand the wood surface with fine 220 grit sandpaper to smooth the grain and remove any crystallized sap. Imgp3939 by r0ckstarr on flickr. When it dries it hardens and becomes difficult to remove creating unsightly spots or bumps in the wood surface. Sfogarty sean fogarty february 25 2016 3 40am 6.
The sap feels pretty solid to the touch and not really sticky. Use a coarse plastic sponge to scrape the oozed resinous compounds and go over the surface of the wood with a clean towel.