Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Painting

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-25-2011, 12:45 PM   #1
Newbie
 
Join Date: May 2011
Posts: 13
Share |
Default

Protecting exposed subfloor from build up of water


Hi all,

Im looking for a method to keep water from accumulating on a platform-like-floor-system I just built. The platform will eventually have a small cabin sitting on top of it, but that cabin wont be raised and closed in for a number of months (anywhere from 4 to 9).

My dilemma is this: The subfloor is 1" rough sawn hemlock boards, but between them and the joists is housewrap with taped seams. The joists will eventually be dense-packed with cellulose, so the housewrap will 1)help contain the cellulose when its blown, and 2)act as an air barrier. However, the hemlock boards have shrunk considerably since they were laid down, which has opened up fairly significant gaps between them (1/2" in the most dramatic places). Whenever it rains, water gets between the hemlock boards, and pools up on top of the housewrap. This makes it so the hemlock boards are sitting on top of and around water. I want to do something to stop this from continuing to happen.

The added layer to this dilemma is I am currently living over a portion of this platform in a canvas wall tent, so tarping the whole thing is not the most desirable option at all (dont want to live and walk on a tarp or poly all the time).

So, I'm looking for options to prevent this accumulation of water. Here are the options I can think of:

1. Tarp the whole thing once there's no water on the housewrap, and either deal with living atop it, or live somewhere else.

2. Lay down tarp everywhere but the area covered by my (large) tent in such a way that I can easily roll it up and down, so that the tarp isnt neccesarily covering the platform at all times, but only at certain times (night, rainy periods, periods of expected rain, and when we're away for extended periods of time).

3. Lay down 3/8" underlayment plywood over the whole thing, with caulked and taped seams, and put down a coat of primer or some other effective water sealer (any suggestions on what in particular?) over the whole thing. Keep it uncovered until winter approaches, and then tarp the whole thing (if there isnt a structure over it yet) before the snows come.
  • a) Would this work? Would primer or another sealer actually be able to prevent the plywood from deteriorating while exposed for a number of months?

Any other suggestions? Opinions on my current options? Personal experiences?

Any suggestions appreciated, thanks,
Dan

danf26 is offline   Reply With Quote
Old 07-25-2011, 06:58 PM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,241
Default

Protecting exposed subfloor from build up of water


That house wrap and the water that it traps will destroy the hemlock before the cabin is finished.

I think you should slash the house wrap down the center of the floor joists---you could tape it together later--but at least the decking will dry out from underneath.

If you can't stop it from getting wet--at least give it all the help you can to dry out.

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 07-26-2011, 08:04 AM   #3
Newbie
 
Join Date: May 2011
Posts: 13
Default

Protecting exposed subfloor from build up of water


Thanks for the reply.

Yeah, I think I'll have to do that. I just dont know what to do to keep the joists and anything else from rotting in the process. Under the joists, in the joist bays, are pieces of plywood to act as a floor to catch the cellulose. Even if I poke some holes in the housewrap and take off the rim joists (which Im about to do today), I hope the rain water wont rot out that bottom layer of playwood.

We'll see I guess.

Man! I wish I had realized all this sooner.
danf26 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
low domestic hot water flow with tankless coil mike42 HVAC 28 11-24-2011 08:35 AM
water borehole question joeuser General DIY Discussions 2 04-18-2010 10:33 PM
Well Water snuggles2010 Plumbing 3 04-13-2010 01:36 PM
Testing 12 year old hot water expansion tank? DJfixer Plumbing 2 01-01-2009 08:09 AM
(Water Heater MYSTERY) Hot water out from dead tank with cold water in it? Inayity Plumbing 6 07-14-2008 08:36 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.