Sanding Trex fascia trim

GaryJ

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Joined
Jul 10, 2010
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I had a contractor install some Trex fascia board (1x12) on my deck.  He and his partner used a flat head deck screw to fasten.  Of course there was mushrooming at each site.  So, to smooth out the mushrooming material, they sanded it lightly .  Only problem is that there are now white dull marks everywhere.  Can this be improved on, buffed out, etc.  I think that this guy should  apply all new boards.  Any opinions? Also, wouldn't it look better if the fascia was predrilled and perhaps galvanized finish nails used for attaching?  [sad]
 
Hi Gary, welcome to the FOG.

This is a problem with Trex since the interior isn't the exact same color as the outside.  There are specific screws to help reduce mushrooming.  I believe nailing isn't recommended with Trex but I'm not positive about that.  I'm thinking the white color could be dust and you'll see some improvement cleaning it off.  I don't think buffing will do any good. 
 
There is nothing to fix those dull spots. The best you can hope for is to sand the entire board to bring it to `equally dulled`. I have no experience with Trex fascia in white, but I doubt there is any difference white and colored fascia, such as Trex brasilia.
 
GaryJ said:
I had a contractor install some Trex fascia board (1x12) on my deck.  He and his partner used a flat head deck screw to fasten.  Of course there was mushrooming at each site.  So, to smooth out the mushrooming material, they sanded it lightly .  Only problem is that there are now white dull marks everywhere.  Can this be improved on, buffed out, etc.  I think that this guy should  apply all new boards.   Any opinions? Also, wouldn't it look better if the fascia was predrilled and perhaps galvanized finish nails used for attaching?   [sad]

Try a couple of passes over the area with a propane torch.  I've never worked with this material but that works wonders for restoring all sorts of other plastics. 
 
Gary,

That is good to know.

I see a lot of things going on here. From my perspective warranty resides on the basically the same shelf as the UL. That being it served it purpose intended but really had little to do with you even though you benefited as well. Soon as the contractor touched that with the paper (an probably before, somehow) the manufacturer was off the hook for the repair.

In my eyes the contractor blew it. Not when he decided the solution was to sand the face, but when he decided not to sand the WHOLE face. Had he done this, there would have been nothing for your eye to catch and and presuming that everything else was done correctly, nothing for complaint.

A somewhat related example. For a period I did a lot of custom built-ins with satin & poly. The guy I worked with had a habit of reaching in his pouch for a piece of paper. Even though it was the right grit, there is a difference and I tried to explain to him countless times that once you put a paper to a finished surface, you should use THAT piece for that entire board face. He could never fathom the relationship between his action and the finished blemish.

The spot he would sand (touch up) would look fine. The other area would look fine. But each area would have a different look than the other in different light. This is basically what happened to your fascia. $10 worth of labor now has cost him what $75 - $90 per board PLUS labor.

Note: Now that I have a bit more experience with the composites, I dont think I would put paper to anything not white as I have never seen any that were in fact, composite.

Sorry for your heartburn but I am glad that you are on your way to getting it resolved
 
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