How to assemble a greenhouse
If you choose to assemble the greenhouse yourself, you should plan to spend two or three days assembling a “normal/standard” greenhouse. It is advisable to be realistic in planning your assembly process.
For instance, you have to cast the cement for the base and anchor legs on an even, smooth and level surface and then wait for the cement to dry before assembling the rest of the greenhouse.
Juliana has prepared a visual guide for this process to help you to assemble your new Juliana Greenhouse. For best results, closely follow the assembly instructions enclosed with the greenhouse, and supplement them with this guide.
1. Establishing the base
2. Assembling the frame
3. Glazing with glass or polycarbonate
The guide is based on a standard, square greenhouse, but the same principles basically apply to all greenhouses.
It is important to erect the greenhouse on a strong base that is firmly anchored in the ground.
The base must be both level and square, because otherwise it will be difficult to assemble and erect the greenhouse, particularly the glazing process (glass or polycarbonate). Therefore, cast the base with care and precision. A step-by-step guide is provided here to show you to how to lay out and set up your base.
Dig or bore holes at the spots where you are going to cast anchor legs. The holes must be at least 80 cm deep, to ensure the base is anchored at a frost-free depth.
After inserting the pipes, pour some sand in the bottom of the pipes. To level off the base, you can lift a pipe or pipes (allowing some sand to flow out), which will raise the pipe/pipes as required for levelling.
Level off the base and re-measure it diagonally to make sure it is square.
Do this very carefully because otherwise it will be difficult to assemble and glaze (with glass or polycarbonate) if these measurements are not correct.
Before you start to assemble and erect your greenhouse, it is important to read the assembly instructions completely and familiarise yourself with the assembly procedure.
Although it is possible to assemble the greenhouse by yourself, two are better than one, especially when assembling the end and side sections. You should plan on spending one day assembling the frame.
Get a general idea of which frames go where, starting with the end sections.
Start by assembling the end sections.
To get a general idea of where the frames go, lay them out before you begin to bolt them together.
After this, bolt them together in the order specified in the instructions.
Attach the side and end sections on a level surface. After attaching them, lift the greenhouse onto the base.
If you do not have extra space, assemble the greenhouse directly on the base, but this is not quite as easy.
Loosen the corner bolts on the end sections to make it easier to adjust and slide the frame sections into position.
If you have purchased a steel Juliana base, attach the assembled frame to this using the included J-clips. Slide the curved section of the J-clip underneath the base and attach with the bottommost bolt of the greenhouse.
If you cast the base yourself, or are using a wooden base, attach the greenhouse with one bolt for each section of the bottom frame.
Now assemble the door.
Lay out the frames on the ground to see how the door looks before you assemble it.
For the Premium model, assemble the door around the glazing (glass/polycarbonate); for other models, glue the glazing (glass/polycarbonate) into place with silicone sealant.
Apply a 3-mm strip of silicone sealant to the vertical frame sections marked with a dotted line in the assembly instructions.
If you use more than the recommended amount, simply buy more tubes. Use non-corrosive (acid-free) silicone sealant only.
Slide the other tip underneath the bar with your other hand so the small curved section of the clip is positioned between the glass and the aluminium frame. The wide curved section of the clip will now support the top surface of the glass.
Install 4 glass clips in the bottommost pieces of glass, but ONLY 2 in the overlapping glass sections. In the overlapping glass sections, insert the glass clips in the top one-third. Otherwise they will put too much pressure on the glass and could cause it to crack.
Glazing with polycarbonate is quick and easy. The polycarbonate sheets are full-length and are attached with plastic beading.
The assembly instructions show you where to attach the sheets and beading. You will need acetone, sandpaper, a small saw, a trimming knife and/or heavy-duty shears to install the polycarbonate.
Start by glazing the roof, then the side sections and finally the end sections.
After the polycarbonate sheets and all beading are attached, remove the label indicating which side of the polycarbonate sheet should face outwards. The polycarbonate sheets have now been installed.