Different Garapa mold question - Deck Cleaning Questions and Answers

RE: Different Garapa mold question

Scott Paul ~ Restoring Wood & Decks Since 1993 — Mon, 19 Oct 2020 11:54:24 +0000

The Defy or RAD Stain will work better and prevent the mildew from coming back better.

RE: Different Garapa mold question

briceindy — Sun, 18 Oct 2020 13:49:08 +0000

Thanks for your reply , have you any issues with Messmer’s UV Plus , that is what i used before , is Defy better than this in you opinon , thanks again

RE: Different Garapa mold question

Scott Paul ~ Restoring Wood & Decks Since 1993 — Sat, 17 Oct 2020 11:56:12 +0000

Strip and brighten to fix this. Use Restore A Deck prep kits. Stain with a water-based stain to prevent it from coming back. The Restore A Deck Stain or Defy Hardwood Stin.

RE: Different Garapa mold question

briceindy — Fri, 16 Oct 2020 18:08:58 +0000

I tried all different cleaners and nothing made any difference , I sealed it with oil 2 weeks before laying , strange thing is the boards that we haven't layed yet look fine its just the ones that are layed . Looks really impregnated , sanding looks to be the only fix but how do I stop it from coming back ?

RE: Different Garapa mold question

briceindy — Fri, 16 Oct 2020 18:04:41 +0000

1175,1174,1173

I have a simular Issue , just laid this deck this week , I sealed with IPE Oil looked great untill the next day, looks like contamination , any thoughts

1176

RE: Different Garapa mold question

Scott Paul ~ Restoring Wood & Decks Since 1993 — Tue, 15 Sep 2020 20:09:22 +0000

If it is mildew than bleach will kill it and remove it. if that does not work then it is not mildew.

RE: Different Garapa mold question

rickpo — Tue, 15 Sep 2020 20:06:20 +0000

@administrator

Thanks. I've been hesitant to stain it since I didn't want to stain on top of mildew. If it is discoloration, then I guess I could stain over it?? What's the best way to be sure it is not mildew?

RE: Different Garapa mold question

Scott Paul ~ Restoring Wood & Decks Since 1993 — Tue, 15 Sep 2020 19:58:08 +0000

That is internal discoloration of your wood type. Cleaners will not remove it. Brighteners may help but hard to say for certain. I doubt sanding will get it out as it looks deep. If it is mildew, then bleach is your best option but not sure it actually is mildew.

Different Garapa mold question

rickpo — Tue, 15 Sep 2020 19:47:22 +0000

I built my garapa deck 14 years ago. Stained with TWP. Used Restore-A-Deck to clean and brighten the first time I cleaned it. A number of years ago I was trying to get it clean to refinish it, but I simply could not get all the black (presumably mold?) off of it and kind of gave up, just letting it go. This year I decided I really want to get it cleaned up, but I'm having the same problems. I have tried sodium percarbonate stuff (in hot water),TSP, and chlorine-based stuff (Cabot Problem Solver Wood Cleaner #8002) all at pretty high concentration and together with scrubbing and power washing. Still can't get it clean. (Haven't bothered with brightening until I can get it clean.) I used some Ipe pieces for accent and they are fine. Last resort is to sand it (ugh), but I really hate to do that. Pictures show what it looks like after attempts at cleaning. Note the Ipe piece is on the left. Rest is Garapa. 1152 Any suggestions?