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Deck waterproofing

Posted by exmar 6 SE Ohio (My Page) on
Wed, May 18, 11 at 13:31

OK, this may be a stretch, however this is the "tool shed" forum. I have two decks on my house, the back one is a normal deck with railings, steps, etc. The front one has a roof which attaches to the house so it's a porch I guess. When I built this place I wanted NO exterior painting, etc. So, it's vinyl siding, aluminum trim and soffits, and pressure treated deck and porch. As I recall, the pressure treated wood came in three grades and I went for the middle one. I haven't treated them and they have been there for about 9 years so I'm a little behind.....:-)

I googled deck waterproofing/finishing and got a ton of hits, all selling something, and contradicting each other. There's one outfit out there that sells a pre treatment, treatment and post treatment. BS and other comments thereunto pertaining.

The deck on the back has significant green stains from mold/mildew that's new this year due to the fact that it just hasn't stopped raining.

I was going to scrub the greeen areas with a bleach solutiion and then rinse and allow to dry. Then, borrow my brother's power washer and blast both decks to get rid of any ground in crud, etc.

Checking in the barn I discovered an almost full gallon of Thompsons water seal, reading the instructiions, one of it's uses is decks. Further, it provides a slight darkening of the wood (regular product, not one with a stain included) and as some bleaching has occurred that seems a reasonable way to go.

So, what I think I'm going to do is a light bleach solution for the green areas, power wash, let dry thoroughly, then apply the Thompson's with a pump up garden sprayer, maybe put a long handle on a roller to even it out.

Comments, observations, and OMG's are welcome.

Thanks for your time,

Ev


Follow-Up Postings:

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RE: Deck waterproofing

Ev there selection here at garden web I think Homes you can't beat there advise on that forum Decks maybe under Home forum.


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RE: Deck waterproofing at garden web

http://ths.gardenweb.com/forums/porch/

This is one

Here is a link that might be useful: decks


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RE: Deck waterproofing

  • Posted by exmar 6 SE Ohio (My Page) on
    Fri, May 20, 11 at 7:30

Thanks Gator, I checked that out, not a lot of definitive info. Guess folks just go ahead and do it. Anyway, I checked out Thomposon's website, they had info AND a $4/gallon rebate coupon if you buy at least 3 gallons, since I need 3 gallons.....:-) Checking further in this little town I live outside of(4 traffic lights), the only place that sells Thompson is Wally World, and it's $11.67/gallon. I love it when a plan comes together!! Now, if it'd just stop raining!!!!! At least I'm not down south with the Corps of engineers doing their magic.

Ev


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RE: Deck waterproofing

Consumer reports has no ax to grind and since they are coomparing them all on wear, I don't see how you can go wrong with them with stains. It might be wise to check the age of your original Thompsons. The old stuff was considered almost useless! The new stuff is much better but still far inferior to any opaque stain. Of course the price is super, and you can slop on a second coat in a couple of years as necessary.


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