Because it is a 2 part wood filler bondo wood.
Wood filler for treated lumber.
Medium brown in color when mixed bondo wood filler is stainable and paintable making it perfect for almost any wood surface inside or outside of the home.
You can mold and shape it to match the original wood profile.
Treated lumber cracking happens because water soaks into the wood.
If you remove the screw and use a combination drill and counter bore you can put the screw back in and use wooden plugs sanded smooth to hide the holes.
I also would not use a filler.
Bondo wood filler rebuilds restores and replaces rotted or damaged sections of wood on doors windows fences furniture shutters and more.
Trying to use wood filler or caulk prior to staining your exterior wood deck will just end up looking unsightly as the product will eventually fail anyway.
Should have waited at least a few months unless you used kiln dried after treatment wood.
The most common kind is pressure treated wood.
To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool.
It takes paint well and won t rot.
Item 45896 model 21600000.
Use a polyester filler to rebuild rotted or damaged wood.
Treated wood wood is treated to preserve it and help give it some protection against fire weather and the elements.
The wood swells creating stress within the wood s cellular structure.
How long did you wait for the lumber to dry out before staining.
Whether your deck is pitted with small nail holes or deeper areas of rot you can repair the damage with a wood filler product.
Warning do not use a metal scrub brush to clean the deck as this will damage the wood fibers.
When the water evaporates the wood shrinks.
Latex wood filler made from wood flour dust like wood particles can be thinned with water or a water based colorant to the ideal consistency or viscosity for filling grain.
The cracks you see are the visible signs of this tearing apart of the wood fibers.
Similar to an epoxy filler or.
Then coat the rotted door frame area with wood hardener.
This movement causes tension forces that start to tear the lumber apart.
How to repair a deck with wood filler.