I've just had installed a new Douglas Fir tongue and groove porch floor - the porch is covered but will still get some rain. The flooring already has two coats of Woodlife Classic and I will be priming and painting it.
Upon closer inspection I found seeping sap. I've read other posts on this topic here and elsewhere, but still have questions.
What I have done is:
- dug out the sap as best as I can - there are 13 spots - they are differing sizes - from 2" - 5" long and about 1/4" - 3/8" deep.
- 3 out of the 13 have a diagonal vein of sap that runs deep
- I'm afraid to go any deeper - the boards are 5/8" thick and I don't want to go all the way through.
What I have read is that I should prime with BIN and then fill with a wood epoxy, however I have found two different opinions on which should go first.
So, my questions are:
- Which goes first, the epoxy or BIN?
- Can I leave the deeper veins as they are and just clean them out as best as I can?
- When I dug out the sappy parts, the wood is pretty rough - will the epoxy better adhere to a rough surface or should I sand them smooth?
- I know sanding will be required once all is said and done - should I retouch the Woodlife?