Page 4 of 4 FirstFirst ... 234
Results 31 to 33 of 33

Thread: Marbau decking

  1. #31
    Join Date
    Feb 2013
    Location
    Ballarat,Vic,Aus
    Posts
    3,855
    Total Downloaded
    0
    Quote Originally Posted by DoubleChevron View Post
    In those piccies, it isn't corrosion. The wood is just still wet as the screws are countersunk ... so there is still water pooling there . I'll take the same photo tomorrow if I get out there before it rains again . they will be galavised decking screws. the boards are the same dark colour anywhere they are wet if you look around the edges of the puddle of water there.

    seeya
    shane L.
    I never did post those photos....

    Marbau decking-20211102_111623.jpg

    Marbau decking-20211102_111630.jpg

    The black marks are where a cast iron table and chairs usually sit. Notice whatever the painted on coating is ... the "black" is under it ... ie: its porous, so no good either way. I've spent a couple of hours outside with a sander and 40grit paper. Everywhere except under the eves sands very easily. I'd glad I'm just sanding off the coating and not trying to sand the boards at all. Even 40grit hardly touches the wood. its as hard as a rock! I'd hate to try and sand it. The coating I think is still down in the grain under the eves, but other than that it seems to have sanded off quite well.

    The problem is now it'll be really patchy if I oil as it all the places I've sanded the coating from will still have bright wood under it and the rest is weather. So i googled oxalic acid ... and stumbled across this. That sounds about 1000times cheaper than buying a deck cleaner

    Diggers 2kg Rust And Stain Cleaner - Bunnings Australia

    I'll give it a shot hopefully tomorrow... if it doesn't rain (again).
    Attached Images Attached Images
    Proper cars--
    '92 Range Rover 3.8V8 ... 5spd manual
    '85 Series II CX2500 GTi Turbo I :burnrubber:
    '63 ID19 x 2 :wheelchair:
    '72 DS21 ie 5spd pallas
    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual :zzz:
    '11 Poogoe RCZ HDI 6spd manual

  2. #32
    Join Date
    Feb 2013
    Location
    Ballarat,Vic,Aus
    Posts
    3,855
    Total Downloaded
    0
    Quote Originally Posted by simonmelb View Post
    You’re on the right track - just remember to use the right treatment as follows:

    Sanding - required to remove surface coatings like varnishes, and to take any wood back to a new like layer

    Sodium Percarbonate ( Available in pure form from Homebrew shops) or in Napisan etc: excellent for removing organic residues ie dirt etc.

    Oxalic Acid ( found in good decking cleaners): removes the grey oxide layer so your oils will bring out the natural wood grain really well.

    In your case, yes it looks like you need to sand that partial surface coating off, then oil. Sanding means you won’t need to use oxalic acid.

    I would use a heavy duty orbital as I’ve got one - but just about any sander will work, even a good random orbital.
    That's amazing, thanks for the tip on Oxalic Acid. it went from greyed patchy uglyness to almost looking like new raw decking boards after brushing some concrete cleaner over it.





    I found a lot fo the Oxalic Acid was still undissolved in the bottom of the bucket when I emptied it.... Its probably worth washing it down again, this time disolving the powder in hot water first before adding it to the bucket.... To see if I can bring out some more colour....

    I think I'll just oil it though as it looks like rain everyday for as far as the weather report shows.
    Proper cars--
    '92 Range Rover 3.8V8 ... 5spd manual
    '85 Series II CX2500 GTi Turbo I :burnrubber:
    '63 ID19 x 2 :wheelchair:
    '72 DS21 ie 5spd pallas
    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual :zzz:
    '11 Poogoe RCZ HDI 6spd manual

  3. #33
    Join Date
    Feb 2013
    Location
    Ballarat,Vic,Aus
    Posts
    3,855
    Total Downloaded
    0


    and finally with a bit of oil mopped on
    Proper cars--
    '92 Range Rover 3.8V8 ... 5spd manual
    '85 Series II CX2500 GTi Turbo I :burnrubber:
    '63 ID19 x 2 :wheelchair:
    '72 DS21 ie 5spd pallas
    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual :zzz:
    '11 Poogoe RCZ HDI 6spd manual

Page 4 of 4 FirstFirst ... 234

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!