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Humidity in the garage. Any one uses one of this to control it?

5232 Views 17 Replies 11 Participants Last post by  MR_X
Was wondering if anyon uses one of this to control humidity in the garage.

http://www.homedepot.com/p/DampRid-64-oz-Hi-Capacity-Moisture-Absorber-FG50T/100391308

It isn't really bad in my garage but enough to bother me. I keep my press with a light coat of silicone spray and that is working to keep it rust free but the parts that I can't spray, I have to clean regularly to wipe off rust or finger oils so it doesn't rust.
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Try using a rust preventative oil instead of silicone. Silicone isn't really very good at preventing rust. It just makes stuff slippery. Also try keeping a big fan running in your garage all the time. The Damp-rid will help a little but you will be constantly replacing/refilling them.
It sounds as if you need better ventilation. A window AC unit might help a lot. I can see using the chemical in a small closed space but not in a garage.
Was wondering if anyon uses one of this to control humidity in the garage.

http://www.homedepot.com/p/DampRid-64-oz-Hi-Capacity-Moisture-Absorber-FG50T/100391308

It isn't really bad in my garage but enough to bother me. I keep my press with a light coat of silicone spray and that is working to keep it rust free but the parts that I can't spray, I have to clean regularly to wipe off rust or finger oils so it doesn't rust.
DampRid does a good job. I use it in my basement loading room. Don't need it much in the winter, but in the summer it sucks an enormous amount of water out of the air, even with air conditioning. Figure your cubic feet and get the unit for the next step up from that amount of coverage. Also, keep the air circulating. When it isn't, that's when moisture can settle out on surfaces, even if you can't see it, and things start to rust. When it gets hot and humid here in August, you should see the water that runs out of the central air unit from the change in temperature as it cools the air.
Try using a rust preventative oil instead of silicone. Silicone isn't really very good at preventing rust. It just makes stuff slippery. Also try keeping a big fan running in your garage all the time. The Damp-rid will help a little but you will be constantly replacing/refilling them.
I tried using WD-40 rust preventer and gun oil. The issue I was having with it is that it is too thin and it was getting in the powder drop. in order to prevent that, you have to wipe off the excess and once you touch it with bare fingers it comes off. I have used silicone spray on my car on aftermarket shock suspension parts and undercarriage parts and had worked before. Since it is a bit thicker is also easy to apply around the powder drop (not in it). I’m going to try the fan though and see if that helps.

It sounds as if you need better ventilation. A window AC unit might help a lot. I can see using the chemical in a small closed space but not in a garage.
Yes my garage ventilation is very limited. I don't have any windows in my garage and unfortunately it is the only room I have to reload in. According to the description of the item I listed, it is designed for use in the garage or basement and it should last 60 days. I was thinking using 2 and just put them on the bench or near it. I rather replace that every 60 days ish than pay more in my electric bill. I was also considering a space dehumidifier but don't want to have something running on electricity at all time.

I’m going to give this a try but also wanted some inputs on what you guys do in case this product doesn’t work.
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Electric dehumidifyers are not that expensive.

I use one in my shop when it gets humid in the summer. I find that as long as I keep it down below 50% relative. Then I do not have any problems. but on a humid day, that thing will chug out a gallon of water about every couple of hours. This is for an 1,800 square foot workshop. I only run it when I am in the shop and it works well in combination with the ceiling fan.
I think you would soon get tired of replacing this absorbent in a large open space.
There are other types you can bake to regenerate, but it is still a chore.
A dehumidifier would suit better.

I pointed out to a friend that an air conditioner was an effective dehumidifier and it could cost less than a dedicated dehumidifier. He bought a cheap one and just put it on a stand in his basement shop. No cooling, it was blowing warm air out one side and cool dry air out the other. And water down the floor drain.
I know you're not fond of the idea but I too think you'd be best served by using a dehumidifier in your garage reloading area.
I know you're not fond of the idea but I too think you'd be best served by using a dehumidifier in your garage reloading area.
These things work great and most of them have a way of hooking up an external drain rather than having to deal with the built in catch bucket that has to be emptied.
Great choice, and, a great option for your application would be this:


  • Continuous drain option drains your dehumidifier, so you don't have to empty the water bucket
Just hook up a small length of garden hose and route it out and underneath the garage door to continuously drain the bucket to the outside. I use one similar to this in my basement, along with the central air, and you'd be surprised on the amount of moisture it removes above and beyond what the central air removes.
I believe it would be hard to keep the humidity down if your garage has typical, overhead door; most allow "ample" air infiltration.
Considering garages are terribly insulated as a result of the door, short of actually conditioning the space I don't see any affective means of getting moisture out of it.

Besides, every time you open the door, you are starting from scratch.
Considering garages are terribly insulated as a result of the door, short of actually conditioning the space I don't see any affective means of getting moisture out of it.

Besides, every time you open the door, you are starting from scratch.
Very true, I just assumed :scratch: he was using his garage as a work shop, as I do, and not using it daily as a space to park his vehicle(s).
Very true, I just assumed :scratch: he was using his garage as a work shop, as I do, and not using it daily as a space to park his vehicle(s).
True, but even then unless you build a wall in place of the door its still allowing all heat/cold in. Metal door + gaps at the top, sides, and bottom = non-conditioned for all intents and purposes.

I think if humidity is seriously an issue, you need to condition the space... I can't imaging a 64oz. bucket of absorbent material doing anything when an area like that requires a small window unit at the least to keep it dry.
True, but even then unless you build a wall in place of the door its still allowing all heat/cold in. Metal door + gaps at the top, sides, and bottom = non-conditioned for all intents and purposes.

I think if humidity is seriously an issue, you need to condition the space... I can't imaging a 64oz. bucket of absorbent material doing anything when an area like that requires a small window unit at the least to keep it dry.

Its actually fairly easy to seal off a garage. I've had a number of friends over the years who turned their garages into apartments, or man cave type setups. Throw some cheap fiberglass insulation into the walls, seal the garage door around the edges (they make stuff for doing that), and if you are only using part of the garage, get some of the heavy duty plastic sheeting like they use at construction sites to create walls and overhead around the area you are using. Its essentially air tight, so it can be kept relatively low in humidity. Think outside the box, there's always a way to get where you want to go if you're willing to do a bit of work.
Its actually fairly easy to seal off a garage. I've had a number of friends over the years who turned their garages into apartments, or man cave type setups. Throw some cheap fiberglass insulation into the walls, seal the garage door around the edges (they make stuff for doing that), and if you are only using part of the garage, get some of the heavy duty plastic sheeting like they use at construction sites to create walls and overhead around the area you are using. Its essentially air tight, so it can be kept relatively low in humidity. Think outside the box, there's always a way to get where you want to go if you're willing to do a bit of work.
Been thinking of atually doing that since I don't park my cars in the garage.
Well day 3 of using Damrid and a fan and my daily press rust removing hasn't happened. You can tell the difference in the air inside the garage when you walk in.
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