Rented material goes back when the job ends. Material you buy stays with you, and so do its problems. That is why the thing to look at when buying is not the figure at the bottom of the quotation but what condition that material will be in five years from now.
If you are still weighing renting against buying, start with this piece; the list below is for after that decision. The questions work with any manufacturer you buy from.
01Which standard, and is there a certificate?
Façade scaffolding is covered by TS EN 12810, and the general performance requirements by the TS EN 12811 series. "Complies with the standards" on its own says nothing: which standard, what scope, under which certificate number?
If you are buying a system scaffold, the manufacturer should hold test and calculation documents prepared for that specific system. Without them, the load class printed in the catalogue is only a claim.
Structural steel fabrication is a separate heading: EN 1090. If you plan to export the material or to work into the EU market, ask about it specifically. Then check whether ISO 9001, ISO 14001 and ISO 45001 are in place. For all of them ask for the certificate number and the validity date, not a scanned cover page.
02What grade is the steel?
A quotation usually gives tube diameter and wall thickness, and says nothing about material grade. That is where the real difference sits. We use S355JR on load-bearing components. A standard made from a lower yield strength steel looks identical from outside and does not behave the same under load.
Ask for the wall thickness in writing too. Half a millimetre is invisible in a catalogue photograph and becomes visible at the first overload.
03Welding and surface
Welds tell you something by eye: whether the run is continuous, spatter, undercut, and how clean the rosette and wedge connections are. The better question is whether welded fabrication is carried out under a quality system. EN ISO 3834-2 certifies exactly that.
On the surface, the question is hot dip galvanizing or paint. For material that will sit in an open yard and travel across many projects, galvanizing pays for itself. We wrote about the difference separately.
04Are the parts list and erection document included?
A system without a parts list cannot be counted, and a system that cannot be counted melts away over a few projects. The list should be detailed enough to sign at hand-over: part name, size, quantity.
The erection document keeps assembly from being left to whatever the crew is used to. Tie spacing, lift height, bracing pattern and the permitted loading are all defined there. For a new foreman, it is the only reference on site.
05Spare parts: are those dimensions still in production?
This is the most overlooked side of buying. Systems resemble each other from a distance, but wedge and rosette dimensions and the geometry of a deck hook are specific to the maker. The day you cannot find a single part, what you have is an incomplete system.
The risk is higher with a one-off import: the seller may not bring the same product again. So the question to ask is not "do you have it in stock" but "is that dimension on the production schedule". Get the answer in writing. Our own side of it is set out on the scaffolding sales page (in Turkish).
06Buying second hand
Second hand is the well known way to grow a fleet quickly. What to look at:
- Bent or dented standards, and deformed rosettes
- Cracks in weld runs, especially around the rosettes
- Areas where the galvanizing has worn through and rust has started
- Permanent deflection in decks, and hooks that have opened up
- Mixed makes: parts from two systems may fit together, but they were never calculated together and should not be erected together
- Whether the test and calculation documents exist, and ideally the original invoice or delivery note
The deck is the component that fatigues most. We put our own decks through a deflection test at 100 kg over a 2.5 m span; on a second hand deck you can run a rough version of that check on site and see whether any permanent sag remains.
Putting quotations side by side
A comparison is meaningful once you can fill in these six lines:
- Which standard, what scope
- Steel grade and wall thickness
- Surface treatment, and where the material will be stored
- Parts list and erection document included in the price
- Spare parts: are the same dimensions still produced in five years
- Certificate numbers and validity dates
If the lines stay empty, you also do not know where the price difference is coming from.
If you have a parts list, or a take-off of your existing fleet, send it over and we will work out which part matches what and what you need to complete.