TECHNICAL 23 · SITE
Installation sequence: the order that avoids rework.
A greenhouse frame goes up in a sequence, and the sequence is not negotiable. Set the gutters before the arches and you will take them down again.
Set out
Mark the grid from the drawing, check diagonals. A 10 mm error here becomes 100 mm at the far end.
Anchors
Install to the anchor schedule before anything is standing. Ground screws or cast-in legs.
Posts and gutters
Posts first, gutter line on top, level checked along the run.
Arches
Erect from a braced bay outward, orienting oval arches to the strong axis.
Purlins and bracing
Purlins to the punched pattern, then longitudinal and end bracing.
Doors and vents
Portal frames and door sets last, because they are set to the erected frame.
Cover
Film or sheet after the frame is plumb and braced; never before.
Crew and time
A four-person crew with a telehandler erects roughly 300–500 m² of multi-span frame per day once the first bay is standing. The first bay takes most of a day. If a project schedule assumes uniform productivity from day one, it is wrong by a factor of two on the first two days.
The four site mistakes
- Anchors installed after the frame is standing, so legs are cut and re-drilled.
- Oval arches oriented the wrong way because there was no mark.
- Bracing left until the end, so the house racks while it is half-built.
- Cover fitted before the frame is plumb, which hides the error until the first wind.
What we can and cannot support
We can supply an erection sequence, drawings and a photo guide, and answer questions by WhatsApp during installation. We do not send crews; installation is by your contractor.
Questions this page answers
Do you send installation crews?
No. We supply drawings, an erection sequence, a photo guide and WhatsApp support during installation. Crews are your contractor's.
How long does erection take?
A four-person crew erects roughly 300–500 m² per day after the first bay. Plan the first bay as a full day.
What is the installation sequence?
Set out, anchors, posts and gutters, arches, purlins and bracing, doors and vents, then cover. Never cover before the frame is plumb.
Can you help by video?
Yes, and it is usually faster than email. Send a photo of the problem with the bundle ID and we will call back.
What if a member does not fit?
Stop and photograph it before cutting. A member altered on site cannot be replaced under any warranty, and the cause is usually a drawing revision or a wrong bundle.
Do you support after delivery?
Yes, on specification questions and replacements. We do not warrant the erected structure, because we did not design or erect it.
Who trains the crew?
Your contractor, or the house designer if the project has one. We can supply a written sequence and a marking guide.
Is there a warranty?
On material and coating against the stated standard, per the agreed terms. Not on design, erection or crop performance.
Read next
Pages that answer the question this page raises.
- 08.20Packing & markingGreenhouse frame packing and marking: bundle plans, member IDs, edge protection, nesting a→
- 04.06Fittings & connectorsGreenhouse frame fittings: arch clamps, gutter brackets, ground anchors, film clips, vent →
- 08.12Foundations & anchorsGreenhouse foundation and anchor types: ground screws, concrete-in legs, base plates, upli→
- 09.06Why us / why not usWhen to buy greenhouse frames from XinYonSen, and when another supplier is the better choi→
NEXT STEP
Turn this into a quoted frame list
If this page answered the technical question, the next step is a number. Send the parameters and we will price the tube, profiles, gutters and fittings as one package.