To avoid these ads, REGISTER NOW!

Metal Garage/Carport

Joined
Nov 26, 2017
Messages
8
Location
Buffalo, NY
Hello all,
I posted this in another DIY forum and didnt really get much help on the matter. I live in the Buffalo, NY area.

A few months ago, I bought and had a 18' wide by 21' deep carport built. I decided that I would have it built on a few inches of stone, instead of spending the money for a concrete pad. The plan is to move soon and take it with me. I was in the need of a location to store summer car(s). So something that would protect and stay dry.

It began with framing in a 20' by 24' rectangle with pressure treated 2x4s and leveled it with a 2 inch pinch on the 24' side. So from front to back. I did this on the grass/dirt. Then I was able to find some geotextile driveway paper from a construction guy. Laid that down and put about 11 tons of #1 stone ontop of the paper. The back right corner of the building has ~6 inches of stone. Front left having ~3 inches. Building was built ontop of the stone and anchored to the ground with rebar.

Now onto my questions/ problems.
After the building was built, i left the wood around the perimeter to help hold in the stone and keep it nicer looking. But a month ago, we received some rain which at first seemed fine but suddenly the stone around the perimeter in the inside of the build began to have that wet look. It would dry up here and there. Fast forward to a week ago, i went in and the entire floor inside was wet. Not standing water but damp, wet rocks. I can dig where there is dry stone on top and underneath is the same damp, wet rocks..

So i removed the wood frame, removed some stone from the outside perimeter and added it to the inside of the building. That did not seem to help because i continue to get the dampness. Also, i had condensation on the inside of the roof yesterday morning, which dripped all over the cars.

There currently is no venation which i could understand could cause the condensation on the inside of the roof but what about the floor? Im not understanding why the floor is so wet. It will dry out during the day and not rain during the night but the next morning the stone is wet again.

So my question is, what is going on? And how can i possibly fix this?? Is the moisture coming up from the ground? It was never a wet/saturated area there.

Any help is appreciated. If this could be in a better section, feel free to move it or just let me know.

Thank you!
Dalton

Pictures: https://photos.google.com/share/AF1...?key=Q1U4SkNtRUFvcGpXUE1EQWR4OElNZ3F2bkEtX0d3

And just to add: The rotors are both cars are starting to rust up.. And anything that is sitting on the stones, the underneath of it is soaking wet.
 
To avoid these ads, REGISTER NOW!

readhead

Well-known member
Joined
Dec 8, 2012
Messages
6,177
Location
Durango, Co.
Moisture is coming out of the ground. Remove some gravel, put down some plastic as a vapor barrier and put the gravel back.
 

Bondo

Well-known member
Joined
Dec 22, 2007
Messages
2,549
Location
Greenfield, Maine
It began with framing in a 20' by 24' rectangle with pressure treated 2x4s and leveled it with a 2 inch pinch on the 24' side. So from front to back. I did this on the grass/dirt. Then I was able to find some geotextile driveway paper from a construction guy.

Ayuh,.... I asked at the other forum,...
Is the ground pitched to self-drain, under the geotextile,..??

I agree with readhead,...
Just as We put sheet poly under a concrete pad to stop moisture from comin' up through it,....
Ya probably shoulda put sheet poly, under the geotextile, so long as the hole ya started with was self-drainin',.....
 
To avoid these ads, REGISTER NOW!
OP
T
Joined
Nov 26, 2017
Messages
8
Location
Buffalo, NY
Ayuh,.... I asked at the other forum,...
Is the ground pitched to self-drain, under the geotextile,..??

I agree with readhead,...
Just as We put sheet poly under a concrete pad to stop moisture from comin' up through it,....
Ya probably shoulda put sheet poly, under the geotextile, so long as the hole ya started with was self-drainin',.....

And I believe i said that the ground is pitched toward the back & right. Never has it had standing water there.

I was more worried about letting the water out through than the water actually coming in. Is sheet poly the same as plastic sheeting? What thickness is recommended?
 

DTE

Well-known member
Joined
Jul 13, 2013
Messages
996
Location
North Carolina
I have 2 of those carports and have had them in 2 locations, on concrete, on gravel and on dirt and they sweat in the mornings like it is raining. I think the only way to cure it would be to glue some foam panels to the underside of the roof. I started out with them open on all sides ( they sweated and now they are closed on all but one end and still sweat. But they are good cheap shelter and I have had these for 20 yrs.
 
OP
T
Joined
Nov 26, 2017
Messages
8
Location
Buffalo, NY
I have 2 of those carports and have had them in 2 locations, on concrete, on gravel and on dirt and they sweat in the mornings like it is raining. I think the only way to cure it would be to glue some foam panels to the underside of the roof. I started out with them open on all sides ( they sweated and now they are closed on all but one end and still sweat. But they are good cheap shelter and I have had these for 20 yrs.

Only once have witnessed 'raining' inside. I know it needs ventilation and I know its part of my problem but im going to try and lay some plastic down in hope of at least gaining some control of this situation. Who knows when the first snow storm is going to hit.
 
To avoid these ads, REGISTER NOW!
Top Bottom