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subfloor and floor replacement
Posted on 6/13/22 at 8:51 am
Posted on 6/13/22 at 8:51 am
Just learned that my subfloors may be rotten due to lack of proper ventilation under the house. Looking for a company that inspects and replaces subfloors and floors (after the ventilation issue is fixed). Any recommendations for companies that service the New Orleans area?
3
Posted on 6/13/22 at 11:35 am to The Hamburglar
quote:
Just learned that my subfloors may be rotten due to lack of proper ventilation under the house.
sorry, i have no helpful info to offer
but stories like this are what really scares me about insulating a raised house
i have looked into spray foam and other solutions but the moisture barrier it creates seems to be more of a negative then the hvac loss coming from the floors
so far i have done nothing because, quite frankly, im afraid to cause more issues by trying to insulate my floors
Posted on 6/13/22 at 1:08 pm to keakar
This has nothing to do with insulation...The house is maybe 2 feet off the ground, but apparently there was not enough ventilation with the small portholes/cutouts that are around the brick foundation. The house is 70 years old, and redone after Katrina. I'm not sure where the "moisture" is coming from, but the expert assumed it just came up from the ground underneath the house.
Posted on 6/13/22 at 1:20 pm to The Hamburglar
quote:
I'm not sure where the "moisture" is coming from, but the expert assumed it just came up from the ground underneath the house.
ya, that close to the ground and no airflow is gonna keep the ground and everything around it wet 24/7
about all i can suggest is break open the solid brick barriers blocking airflow to get more airflow going.
you need to give up the pretty look and add a lot more openings or add some form or forced air vent fans controlled by moisture sensors and put up with the extra electricity costs
.
Posted on 6/13/22 at 2:55 pm to The Hamburglar
quote:
I'm not sure where the "moisture" is coming from, but the expert assumed it just came up from the ground underneath the house.
Yep. Back before HVAC, this wasn’t an issue. Once A/C is introduced, that warm, moist air is seeking equilibrium with that cool, drier air in the home, which over the years creates thousand of cycles of this and, inevitably, condensation; then rot.
Closed cell foam can actually mitigate this issue, but you have to fix the ventilation issue. Of course, there’s a trade off, and closed cell can create problems if there’s a leak up above that can’t get out.
Good luck, OP!
Posted on 6/13/22 at 5:52 pm to The Hamburglar
You’ve got ‘damp’ air tramped under your house. Get a cheap moisture meter from Home Depot and see what it reads.
Had bad ventilation under mine as well due to no ventilation, waited till December when humidity is low and used close cell spray foam. Or rig fans under the house to move the air.
If you use close cell spray foam my advice would be to have them use open cell 1 foot around all plumbing so if you have an issue you’ll know about it.
Had bad ventilation under mine as well due to no ventilation, waited till December when humidity is low and used close cell spray foam. Or rig fans under the house to move the air.
If you use close cell spray foam my advice would be to have them use open cell 1 foot around all plumbing so if you have an issue you’ll know about it.
Posted on 6/13/22 at 6:34 pm to The Hamburglar
You might find this publication helpful Insulating Raised Floors in Hot, Humid Climates
Posted on 6/14/22 at 2:06 pm to CrawDude
Tear out the batted insulation if you have any. It’s making the floor sweat underneath. I am/have been replacing mine with Legacy plywood from Home Depot. It’s layered with Gorilla glue. This is extremely strong stuff.
There is also a brand called Advance tech.
Also, cover ground with plastic sheeting. This is how they do raised homes and trailers.
There is also a brand called Advance tech.
Also, cover ground with plastic sheeting. This is how they do raised homes and trailers.
This post was edited on 6/14/22 at 2:09 pm
Posted on 6/15/22 at 10:42 am to LSU999
All of these posts are helpful, but does anyone have a recommendation for someone who can do this work?
Posted on 6/15/22 at 12:05 pm to The Hamburglar
Can’t help on the ventilation issue, and you’ll want to take care of that first. Once your new subfloors are in, if you want to go with closed cell, give Barry at Quality Spray Foam a call. He’s out of Houma but will come to NOLA for a job. He’s a good guy and he’s fair. 980.870.2276.
Also, if you do go with closed cell, it’d best to wait until the winter when humidity levels are down, as the moisture content of the wood will be lower then.
Also, if you do go with closed cell, it’d best to wait until the winter when humidity levels are down, as the moisture content of the wood will be lower then.
Posted on 6/15/22 at 1:40 pm to The Hamburglar
Moisture can be created out of thin air. when warm and cool collide it creates condensation.
This can be alleviated 2 ways-
Install fans to move the air.
Or
Seal up the vents and install some dehumidifiers. I did this and it works like a charm. It’s incredible under my house now.
As to the subfloor replacement, I have seen it done. It might not be as bad as you think if the damage is limited.
This can be alleviated 2 ways-
Install fans to move the air.
Or
Seal up the vents and install some dehumidifiers. I did this and it works like a charm. It’s incredible under my house now.
As to the subfloor replacement, I have seen it done. It might not be as bad as you think if the damage is limited.
This post was edited on 6/15/22 at 1:44 pm
Posted on 6/15/22 at 2:49 pm to SlidellCajun
quote:
Seal up the vents and install some dehumidifiers. I did this and it works like a charm. It’s incredible under my house now.
I’d like to hear more about how you did this. I’ve thought about it, but in a once in a blue moon rain event, I’m in danger of getting water in my crawl space.
Posted on 6/15/22 at 3:19 pm to The Hamburglar
pokorn construction
king cole construction
jlv construction
king cole construction
jlv construction
Posted on 6/15/22 at 4:21 pm to GeauxldMember
We’ll I think what they’d do is build up a crown to keep the water from pooling up but it really depends on the situation
All I know is that they installed a thick curtain around my chain wall to close it up. The dehumidifies run when the dew point gets to a certain level. It’s monitored remotely by the installer and They come out and check it every 3 months.
I never had rot floor or sub floor but I had warping. That has been remedied
All I know is that they installed a thick curtain around my chain wall to close it up. The dehumidifies run when the dew point gets to a certain level. It’s monitored remotely by the installer and They come out and check it every 3 months.
I never had rot floor or sub floor but I had warping. That has been remedied
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