Scaffold Shrink-Wrap Encapsulation SWMS
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Wrapping a scaffold converts an open lattice into a solid wall, and a solid wall in wind is a sail. That is the whole hazard, and it is routinely underestimated because the wrap itself is light. An open scaffold lets wind through and its ties were designed on that basis. Encapsulated, the same scaffold presents a near-continuous surface, and the wind force it must transmit into the building through its ties rises by an order of magnitude. **The tie design, tie spacing, tie capacity and the standards' loading are all invalidated by the wrap.** A scaffold that stood safely for months can be pulled off a building in a single storm after being wrapped, taking the facade fixings with it.
**The second hazard is that the installation method is an open flame on a combustible sheet.** Shrink wrap is a polyolefin film shrunk with an LP Gas heat gun, on a scaffold, often against a building, frequently near debris, timber, membrane or insulation. It burns readily, it burns fast, it spreads vertically up the wrap, and it drips — and **the wrapped scaffold is also the escape route**. Every encapsulation requires an engineer's re-assessment of the scaffold for the wrapped condition to AS 1170.2 before wrapping begins, and a hot work regime with a dedicated fire watch for the flame. This SWMS covers wrap installation at height, heat shrinking, maintenance and removal, for dust, debris, overspray, blast media, asbestos containment or weatherproofing. Regulator: SafeWork NSW.
Hazards identified
14 hazards covered, sorted by priority.
The wrapped scaffold is pulled off the building in a storm, taking the facade fixings with it
Fire spreading vertically up the encapsulated face, faster than anyone can descend
Workers enclosed by the wrap with the fire between them and the exit
Fall from the scaffold while handling a panel outside the guardrail
Catastrophic cylinder failure inside an enclosure that concentrates rather than disperses
Electrocution — the wrap removes the visual cue that the line is there
A part-fixed panel acting as a sail and pulling the installer or the scaffold
A tie removed from a wrapped scaffold by someone treating it as an ordinary scaffold
Head or crush injury to persons below from a dropped roll, gun or tool
Deep burns from flame or molten film, which adheres and continues to burn
Heat illness inside an encapsulation that behaves like a greenhouse
Respiratory exposure to decomposition products accumulating in an enclosed space
Trips, falls and missed hazards for every following trade inside the enclosure
Musculoskeletal injury carrying rolls and cylinders up a scaffold
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Require an engineer to re-assess the scaffold for the ENCAPSULATED condition to AS 1170.2 BEFORE any wrap is installed — the wrapped scaffold is a different structure and the original tie design does not apply to it.
- 2Install the revised tie arrangement, additional ties, bracing and standards by a licensed scaffolder and verify before wrapping begins, with tie fixings proof tested into a structure verified to carry the increased force.
- 3Do not wrap a scaffold that has not been re-assessed, and do not partially wrap 'to save time' without assessment — a partial wrap still loads the ties.
- 4Use a hot-air (electric) shrink system rather than an LP Gas open flame wherever the product and program allow.
- 5Remove all combustible material from the scaffold and wrap zone before heat work, specify fire-retardant grade wrap, and provide non-combustible separation to the building face.
- 6Maintain a dedicated fire watch — positioned OUTSIDE the wrap where it can see the whole face — for a minimum of 60 minutes after the last flame, with a further inspection at least 60 minutes later.
- 7Plan and maintain at least two independent means of escape from every wrapped lift, neither passing through the wrapped face, with designed escape openings marked, unobstructed and openable from inside without a tool.
- 8Feed gas from a cylinder located OUTSIDE the wrap at ground level — never store or use a cylinder inside an enclosed wrapped lift, where a leak accumulates rather than disperses.
- 9Install the wrap from inside the scaffold and feed it over the handrail rather than reaching or climbing outside, retaining full guardrail, midrail and toe board at every lift during wrapping.
- 10Wrap only in the calmest forecast window, handle panels in manageable widths, and release a panel rather than hold it — no worker holds a sail.
- 11Identify and mark every overhead line and building service BEFORE the wrap conceals them, and observe the network operator's approach distances; energised electrical work is prohibited under Part 4.7 Division 4, sections 154 and 157 unless de-energisation is not reasonably practicable.
- 12Tag the scaffold as ENCAPSULATED with the engineer's revised tie schedule displayed at every access point, and prohibit removal of any tie, standard or brace without the engineer's written authorisation and re-assessment.
- 13Ensure all workers hold a current White Card (CPCCWHS1001), with scaffolding work by a licensed scaffolder of the appropriate class and wrap installers trained in LP Gas hot work.
- 14Consult workers per Section 47 of the WHS Act 2011 (NSW), record it, and review whenever the scaffold, wrap extent, enclosed work or weather exposure changes, after any incident, or at minimum every 12 months.
Applicable Codes of Practice
The benchmark for edge protection, working platforms and fall control during wrap installation and removal.
The benchmark for LP Gas and shrink film decomposition products as hazardous chemicals, including ignition control and ventilation.
The benchmark for construction-phase risk management, exclusion zones beneath the face and coordination with following trades inside the enclosure.
The design, erection, use, alteration and dismantling of scaffolding, including the requirement that any change to the loading — such as encapsulation — be assessed by a competent person.
The basis on which the wind force on an encapsulated scaffold is calculated — the wrapped condition is a different structure and must be assessed as such.
Cylinder storage, securing, separation distances, hose and regulator condition and leak testing — with particular control required for cylinders near an enclosure.
High-Risk Construction Work triggered
Wrap is installed, tensioned and removed at every lift of a scaffold well above 2 m, at the outside face, and the panels are handled at the guardrail.
An LP Gas open flame is used on a combustible polyolefin film, and gas or film decomposition products accumulate inside an enclosure rather than dispersing.
Overhead lines and facade-mounted building services sit within reach of the scaffold, and the wrap conceals them from view once installed.
Shrink-wrap encapsulation of scaffolding is high risk construction work under Section 291 of the WHS Regulation 2025 (NSW), so a SWMS must be prepared before work commences (Section 299), kept readily accessible, reviewed as necessary (Section 302), and given to the principal contractor if one is appointed. Scaffolding work where a person or object could fall more than 4 m requires the appropriate scaffolding high risk work licence class under Part 4.5, and scaffold is plant subject to inspection before use, after alteration and after any impact or high wind. Critically, AS/NZS 1576 requires any change to the scaffold's loading — and encapsulation is a change of an order of magnitude — to be assessed by a competent person: wrapping a scaffold on its existing tie design is not a shortcut, it is an unassessed structural modification. The primary duty of care at Section 19 of the WHS Act 2011 (NSW) extends to persons below and to occupants of the building the scaffold is tied to. A scaffold collapse, a fire, a fall from height or a serious burn is a notifiable incident under Sections 35–38 and is prosecuted as a Category 1 or Category 2 offence, with the most serious breaches carrying imprisonment for individuals.
Who this is for
- →Scaffolding contractors encapsulating scaffolds for dust, debris, overspray, blast media or asbestos containment, or for weatherproofing.
- →Shrink-wrap installers using LP Gas heat guns on a scaffold, and the fire watch supporting them.
- →Remedial, blasting, painting and asbestos removal contractors whose containment depends on an encapsulated scaffold.
- →Structural and scaffold engineers re-assessing tie arrangements for the wrapped condition against AS 1170.2.
- →WHS managers and HSE advisors responsible for scaffold integrity, hot work permits and wind management on encapsulated structures.
What you receive
- ✓A complete, editable Safe Work Method Statement authored for New South Wales — the WHS Act 2011 (NSW), the WHS Regulation 2025 (NSW) and SafeWork NSW as regulator.
- ✓14 identified hazards with initial and residual risk ratings on a 5x5 matrix, each with controls ordered through the full hierarchy — eliminate, engineer, administrative, PPE.
- ✓The sail-effect control set: an engineer's re-assessment for the ENCAPSULATED condition to AS 1170.2 before any wrap goes on, because the original tie design does not apply to a wrapped scaffold.
- ✓The escape control set built on the fact that the wrapped scaffold is also the escape route — two independent means of escape per lift, designed openings, and a fire watch positioned OUTSIDE the wrap.
- ✓LP Gas controls that keep the cylinder outside the enclosure entirely, because a leak inside an encapsulation accumulates rather than disperses.
- ✓The concealed-services control requiring every overhead line and facade service to be identified and marked BEFORE the wrap removes the visual cue.
- ✓The unauthorised-alteration control set: the scaffold tagged as ENCAPSULATED with the revised tie schedule displayed, so nobody treats it as an ordinary scaffold.
- ✓The full high risk construction work breakdown — falls over 2 m, contaminated or flammable atmosphere and energised electrical — with the reason each applies, plus a PPE matrix, emergency procedures and a worker sign-on table.
- ✓Microsoft Word (.docx) format, unbranded, editable fields for PCBU, ABN, site, prepared by, reviewed by, approved by and review date.
Worked example
A scaffold has been up on a remedial job for four months. It is tied, tagged, inspected and completely unremarkable. The painters want it wrapped for overspray containment, so a crew comes in on a Tuesday and wraps it — the same scaffold, the same ties, nobody rings anybody, because it is just plastic. On Saturday a southerly comes through at 90 km/h. The scaffold that let wind straight through for four months is now a nine-storey sail, and the ties that were designed for an open lattice see something like ten times the force they were calculated for. They do not fail one at a time. The scaffold comes off the building and takes a strip of facade fixings with it into the street. Nobody did anything they would recognise as dangerous — a crew installed plastic sheeting. This SWMS puts the engineer's re-assessment to AS 1170.2 ahead of the first panel, requires the revised ties installed and verified before wrapping starts, and tags the scaffold ENCAPSULATED so the next person up it knows it is a different structure.
Related legislation
- Work Health and Safety Act 2011 (NSW) — Section 19 primary duty of care; Section 47 consultation; Sections 35–38 notifiable incidents.
- Work Health and Safety Regulation 2025 (NSW) — Section 291 (high risk construction work) and Section 299 (preparation and content of a SWMS), with review under Section 302.
- Work Health and Safety Regulation 2025 (NSW) — Part 4.5 (high risk work licences): scaffolding work where a person or object could fall more than 4 m requires the appropriate scaffolding licence class.
- Work Health and Safety Regulation 2025 (NSW) — Chapter 5 (plant) for scaffold inspection before use, after alteration and after any impact or high wind; and Part 4.7 (electrical) including the prohibition at Division 4, sections 154 and 157.
- AS/NZS 1576 (Scaffolding), AS/NZS 4576 (Guidelines for scaffolding), AS 1170.2 (Wind actions) and AS/NZS 1596 (The storage and handling of LP Gas).
Frequently asked questions
It's just plastic sheeting. Why does an engineer need to look at it?
Because the plastic is not the load — the wind on the plastic is. An open scaffold lets air through, and its ties were designed on exactly that basis. Wrap it and you have created a near-continuous surface that must transmit the full wind force into the building through those same ties, and the force can rise by an order of magnitude. AS/NZS 1576 requires any change to the scaffold's loading to be assessed by a competent person, and this is not a marginal change. A scaffold that stood safely for months is pulled off the building in the first serious storm after wrapping, and it takes the facade fixings with it.
Can we wrap just the top few lifts to save time?
Not without assessment. A partial wrap still presents a surface, still catches wind, and still loads the ties — and because it is usually the TOP lifts that get wrapped, the load is applied at the worst possible lever arm from the base. The engineer assesses whatever is actually being wrapped, in the configuration it is actually being wrapped in, and specifies the ties for that. Partial wrapping is not a reduced-risk version of full wrapping; it is a different load case.
Why can't the cylinder sit on the scaffold with the operator?
Because you are about to enclose the scaffold. A gas leak inside an encapsulation does not disperse the way it would in open air — it accumulates in a space that is now walled, and the ignition source is in the operator's hand. The control is to feed gas from a cylinder outside the wrap at ground level, or better, to use an electric hot-air system and remove the open flame entirely. If a cylinder must be on the scaffold it is never inside an enclosed lift, never within 3 m of the flame, and it comes off at the end of every shift.
Where should the fire watch stand?
Outside the wrap, where it can see the whole face — which is the opposite of where a fire watch usually stands. Shrink film burns fast, spreads vertically and drips, and once the scaffold is wrapped the fire is concealed from anyone standing inside it and the wrap is between the crew and the outside. A watch inside the enclosure sees smoke after the people who need to evacuate already have a problem. The regime is a minimum 60 minutes continuous after the last flame plus an inspection at least 60 minutes later, with at least two independent escape routes per lift and designed openings that open from inside without a tool.