Hi all,
I do not do much “building” so if this is a dumb question – sorry!
I am building a 3 x6 ‘ storage shed to go on the side of my house . I have framed it with 2×4’s and have put OSB sheathing on the roof and sides.
I want to have it match my deck so I was going to nail on 1x6x6 pressure treated boards over the OSB and then stain it next season to match my deck color. Is there any problems with covering osb with the 1x6x6 boards?
thanks
Replies
Is there any problems with covering osb with the 1x6x6 boards?
@@@ We do it all the time when the OSB is the sheathing material. Gets a layer of felt paper or Tyvek, then the siding is applied. Sounds like what you want to do.
But why side with PT wood?
My gripe - those who leave unpainted OSB to weather. It will last for some years, maltreated this way. But if you care, at least prime it, then maltreat it.
The ToolBear
"You can't save the Earth unless you are willing to make other people sacrifice." Dogbert
thanks, I dont have to prime the OSB if I am wrapping it with a lyer of Tyvek though do I?
hanks, I dont have to prime the OSB if I am wrapping it with a lyer of Tyvek though do I?@@@Nope. It will not be exposed to rain and weather. Don't need Tyvek. For a small project like this, tar paper works fine. The ToolBear
"You can't save the Earth unless you are willing to make other people sacrifice." Dogbert
I don't think you get what he intends doing. He wants to side with pt. decking boards - to match what he is using on the deck. No laps or way to stop rain getting behind them. The osb will take moisture like crazy. It's a bad idea without some gap or underlay.
Not what we normally use for siding. <g> He better prime the stuff, detail a weep screed, etc.
Why not match the house siding with the sides of this shed?
The ToolBear
"You can't save the Earth unless you are willing to make other people sacrifice." Dogbert
Not sure why you'd want to side w/pt, but since you asked....
Toolbear is right on with his advice on the felt, but how will you install the pt? If you're running it vertically, there's not enough solid nailing to give good results, unless you put blocking every 16-24'. If you nail just through the osb, the pt will curl terribly. It will also shrink like holy old hell, showing a stripe of felt every 6". Nice look.
If you're running it horizontally, it will still shrink, and unless you put it up like lap siding, ( which, w/ pt, will NOT look good) it will still shrink, showing horizontal felt stripe, and will trap water behind it. Eventually this will let water in at every nail penetration, until the whole thing looks like ###.
If you're bent on pt, do blocking 16-24" apart so there's something to nail to, and think about batten strips to cover the seams. Better still, use a product more suited to siding ( t&g cedar, clap, shingles etc.) and stain it to match instead.....You'll be happier with the end result, I think.
Bing
One more thing. Pressure treated boards can be pretty wet and unstable sometimes.
You nail them up and a few weeks later they have twisted like crazy.
You might want to get a better grade (can't remember the name) of p/t wood.
If memory serves me right I think they kiln dry it first and then p/t it.
Anyway it won't twist like the stuff from HD.
I bought p/t 2x4s from HD. Picked what I thought were good ones. Dried them stickered for about a week and a half and there still is one that looks like noodle in my fence.
Edited 9/11/2008 9:18 pm ET by popawheelie
It goes against the common sense rules of painting, but I have had good luck applying either water based solid color stain or oil based transparent stain to the wet pt. boards. It slows down the drying and seams to stop the checking and twisting. The finishes seem to last ok too.
I never would have thought that. I have painted green wood I've collected to slow down the drying.
It slows down the drying and seams to stop the checking and twisting. The finishes seem to last ok too.@@@@We did that on a pergola. Did try to give the 2x PT a week or so of drying. It wasn't dripping but it did have a moisture content. Used a solid stain. It seemed to get into the grain a bit. The stuff shows virtually no warping.Came back a few years later and did a second coat of latex, which is doing fine. Tried the pressure washer first to remove the algae colonies. Did not budge them. Did not budge the coating either, so let it dry and painted over.The ToolBear
"You can't save the Earth unless you are willing to make other people sacrifice." Dogbert
I finally got to the computer that has my pics on it. Siding withthe 1x6 PT is not such a half-baked idea IMO. I've done it on several well-houses to make them totally maintenance free.
If you lay the boards on like a lap siding it looks pretty decent. You can rabbet an edge to make the overlap not so proud. With enough overlap and attentiont to detail caulk-wise at the corner boards you can make it relatively water proof so waht you put under the clap is not a big deal for a shed. I'd use 30# felt between the OSB and the 1x6 siding. In the attached pic (near completion) the PT siding is attached directly to the studs to reduce weight (it's easy to disassmble for well maintenacne).
It's been 6 years since I last built one though and haven't tried it with the new ACQ treated PT (can't get clients to buy into such an expensive well house). Each time they've faded to a nice subdued gray/silver look and none of them have rotted away like most other wood well houses do around here.
If you plan on butting the edges together... well, that's a half-baked idea that will cause a lot of probelms when it shrinks and opens gaps at the edges.
thanks for the comments and the picture. I do a lot of woodworking (not construction) so I think I will rabbet the edges for overlay on my table router, use the underlay as described and also but some furring in between.
I was going to run the boards vertical but I think I will do it horizontal so that I have to use less screws/nails.
I also have to go back and redo the dog house I did earlier this year. Other than the roof - i obviously screwed it up.... oh well ... live and learn.