5-1/2 foot DIY Hood for approx. $75

[Dolomieu]

I have a variable control for mine. I'm not sure if I need it yet but I plan to use this for more than brewing and won't need full power all the time.

 

[Dolomieu]

Got the hood vented today

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[Dolomieu]

Painted the whole garage and made the hood match.

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[waldorfian]

how did you attach the vinyl hose to the J-channel? Epoxy a plastic hose barb?

 

[TorMag]

What a great idea. Glad I saw this thread. Just moved my operation inside in the basement. Wife is already complaining about the smell.... What's wrong with the smell? I would like to vent out. I have a couple of questions. I am fairly close to my water gas water heater. It has a vent that goes out the top and vents out, I would assume on the roof somewhere. Do you think it would be ok to tap into that pipe for this hood? Also, I do BIAB and have a pulley set up over my kettle, are any of you dealing with pulleys?

 

[wilserbrewer]

I am fairly close to my water gas water heater. It has a vent that goes out the top and vents out, I would assume on the roof somewhere. Do you think it would be ok to tap into that pipe for this hood?

NO!

Many reasons, but short answer no, do not modify an existing chimney to vent your brewery. You want to be sure that water heater exhaust stack properly vents the combustion gases safely out of the house, do not tamper with it.

It could be very dangerous.

 

[TorMag]

NO!

Many reasons, but short answer no, do not modify an existing chimney to vent your brewery. You want to be sure that water heater exhaust stack properly vents the combustion gases safely out of the house, do not tamper with it.

It could be very dangerous.

That's what I thought and why I asked....

 

[waldorfian]

how is the fan housing actually attached to the vent hood. Can't make it out in the pictures.

 

[Dolomieu]

how is the fan housing actually attached to the vent hood. Can't make it out in the pictures.

On mine it's attached to the extra 2x4s. Then I just caulked around the outer edge to get a good seal

 

[Dolomieu]

Hope this helps

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[gnef]

For my setup, I used a duct flange sized for the fan I bought. I cut a big hole sized to the flange to allow it to sit in there, then drilled holes for the screws to fix it in place.

 

[waldorfian]

thanks for the pics Dolomieu. So you have the fan housing thru the hole in the plywood end of the hood and not attached other than with caulking? The hole I cut for the fan is slightly too large so it isn't a friction fit even.

Your pics are kinda dark (sorry for being picky) so I can't really see how you attached the fan housing to the 2x4 wood structure. The metal brackets supplied with my Vortex fan are too long for the hood that I built. I guess I need to modify them to work.

 

[Dolomieu]

thanks for the pics Dolomieu. So you have the fan housing thru the hole in the plywood end of the hood and not attached other than with caulking? The hole I cut for the fan is slightly too large so it isn't a friction fit even.

Your pics are kinda dark (sorry for being picky) so I can't really see how you attached the fan housing to the 2x4 wood structure. The metal brackets supplied with my Vortex fan are too long for the hood that I built. I guess I need to modify them to work.

Yeah sorry about that. Don't apologize, no need. The hole I cut was also slightly larger the the fan. That gave me plenty of play when connecting the ducting on the other side. Once it was all set up, the last thing I did was the caulk. The fan housing is just screwed to the 2x4s. If you look at the other pics you will see I had to lay the 2x4 on its side to get the proper alignment. This may not be the best way, it was just fairly easy to set it up this way at the time.

I'll look through my pics and see if there is a better one. I'm currently in the airport so I can't just go take another one.

 

[Dolomieu]

Found these. Maybe they will help a bit more than the others. There are a couple more bit it was being a pita to upload for some reason.

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[waldorfian]

Okay I see. My fan didn't come with a mounting point on the bottom. It has two metal straps with a 90 degree bend near the end with a couples holes drilled through. I had to offset my 2x4 lower yo allow the straps to sit right. Got it all attached now. Still loose in the hole of the hood though. Gonna either aluminum tape it or caulk it as you have done. thanks for your posts and support.

 

[CerberusMut]

Found these. Maybe they will help a bit more than the others. There are a couple more bit it was being a pita to upload for some reason.

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Looking to build my Hood Vent soon.. Just a couple of questions because I like your approach.
1. After all this time do you still use/ like this approach?
2. I have the same exhaust fan, any moisture issues building up in the fan case?
3. Is that FRP paneling on the inside just curved, sealed on the ends?
4. Did you put in a J channel for the drip and if so do you have a tube running down into a sink/drain?

Thanks in advance..

 

[PDSBrewer]

I'll post some pictures later tonight of my finished hood.

Costs are approximate:
$32 - FRP
$ 5 - Lath screws
$12 - 2x4's
$14 - Plywood half-sheet
$12 - Vinyl J-Channel
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$76

Cut two plywood end caps that are half-circles with a 15.25" radius. This dimension allows the 4' end of the FRP sheet to be fully utilized.

Cut your FRP pieces to match your end caps. I screwed rectangular pieces of FRP to the plywood end caps then routered around the edges to get the FRP lined up with the plywood as closely as possible. Probably best to cut your duct hole in one end cap before attaching FRP, then jigsaw or router out FRP in hole.

Your larger piece of FRP should be 66.5" (96" - 30.5") long by 48" wide. With someone assisting start at bottom of your half-circle plywood end cap and screw the 48" side of the FRP into it every 6 inches or so.

Once that is done, drop your 2x4 rectangular frame onto the hood. At this point you can work in your J-Channel between the FRP and 2x4's to catch condensation.

I've not determined yet how I'm going to seal the J-Channel mitered joints, so any suggestions would be great.

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Any chance in a million you can reattach the pictures? Specifically the measurements? I can no longer open them.

 

[Brewdog80]

From 10 years ago? I note that only one post of how it worked out and that was that it leaked, uh, condensed all over the place. I f you build one of these, it must be as small as possible, and have the highest cfm fan you can get with practically no line distance. or it will just be a condensing hood. the grow fans ain't nearly enough