Finishing Strip plank Jarrah and Pine

I have just started prepping a jarrah and pine strip planked dirt boat deck,
Knocked all the glue and ridges off it and have sanded it down to 120 grit.

My question is; is 120 grit fine enough to now seal it? I don't require a piano finish but I don't want machine marks appearing after I have sealed it

I intend to seal coat with West 107/205, sand back, and then lay some glass ,add another coat of West rolled and tipped.

Then as many coats of a clear varnish to provide UV protection as needed.


Thanks for the help
Regards

Juno621 the sanding grit is fine for most products but whatever you decide on check what they recommend. For penetrating oils that is good as the product will connect with the pores of the timber. For coating systems, check the products recommendations.
For exterior use, consider the long term maintenance over the short term costs. If you apply a product that you will continuously need to sand back then you are wearing the timber down each time...and going through the whole process of recoating.
Good luck.

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Originally Posted by juno621

I have just started prepping a jarrah and pine strip planked dirt boat deck,
Knocked all the glue and ridges off it and have sanded it down to 120 grit.

My question is; is 120 grit fine enough to now seal it? I don't require a piano finish but I don't want machine marks appearing after I have sealed it

I intend to seal coat with West 107/205, sand back, and then lay some glass ,add another coat of West rolled and tipped.

Then as many coats of a clear varnish to provide UV protection as needed.

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I'm not sure why you would want to sand the West systems 107/205 back before laying the glass. If it's to get a better finish you would be better served by sanding the boat to 180 or 240 before applying what is essentially a primer coat of 107/205. Then the glass can go onto the primer coat without any further preparation -- that is unless you wait too long between applying the primer and the glass.