Harbor Freight 10 X 12 Greenhouse Kit (Complete Build and Modifications)

I purchased one also. Had a concrete slab poured, used treated lumber for a base and it has been functioning well for 10+ years. Hail storm damaged some panels and was able to buy replacements through Harbor Freight. Has been a long term success for my garden.

As a handyman I would just recommend not tightening any hardware until all the peices are put together. Once it is all together then you tighten everything down. Leaving the hardware loose gives you the ability to wiggle everything together since no build ever fits together perfectly.

I have two of these and also live in a hurricane prone coastal area of North Carolina and love them. My original one was less than $450.00 on sale from Harbor Freight and is going into it's 11th year. I did some modifications as well, 4x6 treated in ground based secured with 4' rebar given into the ground and attached to the wood base with strapping. I put the doors in a partially opened position to place a 34" storm door in a 1x4 frame. (got the door for $12 from Habitat home store) I also took 1/2" metal conduit and ran from side to side at the top plate for more sturdiness. This greenhouse has survived 4 hurricanes with very little to no damage. The last thing I did was to put two vents in the side walls at the front and a 14" covered exhaust fan in the back wall near the peak. My second one is it it's 2nd year and was given to me by someone who just didn't like it. It's funny how people either love the HF greenhouses or hate them. PBG, great video by the way!

For those living in colder climates where you get snow over the winter, I'd suggest you cover at least the roof area with a big sheet of plastic over the winter. The plexi panels on these greenhouses just rest in place in their track. The panels cannot hold a lot of weight. A sheet of plastic over the entire greenhouse will distribute the weight of snow away from the roof panels. Plastic will also keep heat in over colder months. You can start your seasons earlier & continue them later into the fall/winter.

You might want to add gutters or place bricks around the dripline of your roof so that the heavy rains do not undermine the very shallow foundation laid down.

My daughter Bridgette sent me this post and I’m already subscribed and binging on the videos. Only wish you lived closer to me in Greensboro NC. I bought my greenhouse over 3 months ago and I’m still waiting to get help installing it. With the pandemic, it’s hard to get help. I bought a new fence and Lowes said it will be a 5 week lead time to get it installed. They called this week and said it’s now 12 weeks, so they dropped off all the materials on my grass and I have to wait 12 weeks. Hmmmm

Hi Gabe, here is a trick that might be helpful, I was putting in patio blocks in back of my house, instead of the "proper" procedure of excavating the ground level then spreading sand I used a rototiller to loosen up the dirt, leveled it out with a rake, watered it down until it was a soupy mud, leveled it again with a rake, then let it dry. I wound up with a nice flat solid surface to work with, it's not perfectly flat but good enough to work with and a lot less labor.

It was great to actually see a regular person show the how to, thanks!

You need to silicone each and every poly panel if you want it to survive heavy winds. Also, I had the smaller model and built it up on 4x4s. Was very happy with it with those modifications.

I bought one just like it and so did my neighbor. Both of them blew down with the first little win. Mine was so twisted up and bent I couldn't salvage it. My neighbor could salvage his. And he had to reinforce it with heavier aluminum and 2x4 lumber. They are made of the lightest aluminum you can find. The sliding doors never did work right. Save your money and build one out of lumber!!!!!!!!!!!!!!!

You're going to need to pin or glue the panels in if you live in tropical storm and hurricane areas. I put mind up around 2012 here in NC and the frame is still standing but I've replaced panels for years. Side panels need to be secured the most. If these blow out in a windstorm you can count on the roof panels blowing off if the wind gets under it. A helpful hint: use the original panels to make a stencil for roof and upper roof front and back.

I haven't personally done one yet but one tip I've seen while looking into it is to silicone each panel end . Top, bottom,sides to seal and prevent water staining the panel. I've used these panels enough to know that's a good idea. Just to make sure, I mean before they're installed to seal between the layers

I put up one of these in north Florida a number of years ago. I've been through some tropical storm force winds with no problem but a tornado got me. The house withstood it pretty well but the panels were sent up to 100 yards away. I've modified how they are mounted by using vinyl strips where the wire things used to go. I also bought some electrical conduit (1") and using self tapping screws I attached the pipes to the top of the wall where it meets the roof. Really simple and worked wonders for rigidity. Flatten the end of the pipe with a hammer and attach it with the screw. Really works well and doesn't cost an arm and a leg. The pipe is galvanized so it should last a long time. I use the pipes to hang plant baskets on and to drop line onto my grow beds to train tomato and cucumbers up. To anyone else thinking about doing this.... It's more expensive perhaps but placing 4X4 treated posts on the ground and mounting the house to them is a whole lot easier than working on leveling the dirt and it keeps the house out of the wet ground. I actually used 4 by 6 posts and I am very happy with it.

Excellent video A tree just fell on my 5 year old greenhouse, and my new one just arrived. You have many great ideas i will use. I used a heavy duty clear tarp over my old one in our Michigan winter, and it worked out perfectly 😊

Freaking love the brick! I have had an 8x6 (raised on footers) for over a year now and am convinced... It's time to upgrade to the larger greenhouse...

❤❤Wow I love it. 🎉 I'm your new subscriber. I just came across your channel. I'm looking for a greenhouse like this, but wow it's so hot in Thailand. 🎉😂❤

You did a great job on your video and narration. Greenhouse was great too. Thank you.

Looks like you did everything right. Thanks for sharing.

Love the brick floor. Well done!

Awesome video great ideas for modifying/enhancing the greenhouse!