Shrink Wrap Training: Do You Need It, What It Covers, and How to Get the Most From It

Shrink wrapping is not like fitting traditional scaffold sheeting. It requires a heat gun, specific technique for welding and shrinking, and an understanding of how the material behaves across different applications and conditions. Done well, it is a profitable service that sets a company apart from competitors offering standard scaffold sheeting. Done without training, it produces callbacks, unhappy clients, and sheeting that fails in the first bad weather.

This guide is for scaffolding companies, contractors, and industrial businesses considering whether to bring shrink wrapping in-house. It covers how to decide whether training makes commercial sense for your business, what a good training course should include, and how to get the most from the investment.

Should You Train In-House or Keep Using a Sub-Contractor?

Before committing to training and equipment, it is worth being honest about whether in-house shrink wrapping is right for your business. The answer depends on your customers, your projects, and how regularly shrink wrap work comes up.

The Case for Training In-House

The economics of in-house shrink wrapping become compelling once a business reaches a certain volume of work. For a scaffolding company regularly winning projects that require weather protection or environmental containment, the labour margin on sub-contracting the shrink wrap work to a specialist is margin that could be retained in-house.

Training and equipment represent a one-off investment. Materials — film, tape, gas — are the ongoing consumable cost. Once trained, a competent in-house team can deliver shrink wrap work at a material and labour cost significantly below what a specialist installer would charge for supply and fix. The difference is your margin.

Beyond the financial case, in-house capability gives you control. You are not dependent on a sub-contractor's availability, pricing, or quality. You can respond faster to clients. And for scaffolding companies, the ability to set up your own scaffold structure correctly for shrink wrapping — flush, with sheeting rails, properly designed for the wind loadings — is a genuine advantage that specialist installers working on scaffolds they did not erect do not always have.

When Sub-Contracting Makes More Sense

In-house shrink wrapping is not right for every business. If shrink wrap projects come up only occasionally — every few months rather than every few weeks — the skills learned in training will not be practised frequently enough to maintain them. Shrink wrapping improves significantly with repetition, and a team that only wraps two or three times a year will struggle to produce the quality of work that comes from regular practice.

Similarly, if your typical clients need only basic temporary weather protection for short-term domestic or small commercial projects, the extra cost and performance of shrink wrap may not be something they are willing to pay for. Shrink wrap earns its premium on larger, more demanding, longer-duration projects where the performance difference over standard sheeting is visible and valued.

If those projects describe your work regularly, train. If they describe it occasionally, consider a hybrid approach — sub-contract complex or large jobs to a specialist, and build in-house capability gradually as volume grows.

Which Application Are You Training For?

Shrink wrap is used across several distinct application areas, and the skills involved differ between them. Make sure the training you choose reflects the work you are actually going to be doing.

Scaffold Encapsulation and Containment

The most established shrink wrap application. Training covers hanging and welding 300 micron flame retardant film across scaffold facades and temporary roofs, working safely at height, managing weather conditions during installation, and achieving a drum-tight finish. This is the most technically demanding application — temporary roofs in particular require planning, battening, and careful sequencing that takes time to master.

Industrial Covering

Used to create storage and transport protection covers for large machinery, equipment, and plant. Industrial covering uses 200-250 micron film in wide roll formats, typically at ground level or on low access platforms rather than at height. The welding and shrinking skills are the same as for scaffold work but the context is different — the challenge is adapting the technique to irregular shapes and large surface areas rather than working within a scaffold structure.

Modular Building Protection

Shrink wrap is increasingly used to protect modular buildings and volumetric units during transport and storage. The two main techniques — total encapsulation and sides-only wrapping using timber battening — require specific training in how to lay the film under and around the module and achieve a tight, professional finish. Film widths up to 16 metres are used, and the scale of individual wraps can be significant.

Marine and Boat Wrapping

Boat shrink wrapping uses lighter 180-200 micron marine grade film to create winter storage and transport covers for yachts and motor boats. The technique for welding and shrinking is similar to other applications but working around the curves of a hull — particularly bows and sterns — requires practice and often the use of heat gun extensions to reach awkward areas.

What a Good Training Course Should Cover

Shrink wrap training is almost entirely practical — there is no meaningful classroom element. A good course divides time between theory context and hands-on practice, and should cover the following as a minimum.

Theory and Safety

Equipment familiarisation and pre-start checks for the heat gun. Safe connection and disconnection of the gun, hose, and regulator. Safe handling and storage of propane gas cylinders. Personal protective equipment — what is required and why. Fire prevention on site and the conditions under which a hot works permit is required.

Materials Knowledge

Film specification — what the key figures on a data sheet mean and how they affect installation. Flame retardant standards — EN13501 and LPS1207/LPS1215, when each applies, and how to verify certification. How to calculate how many rolls of film and tape are needed for a given job. Roll handling and storage to avoid pre-installation damage.

Core Installation Skills

Welding technique — how to achieve a reliable heat-welded joint between two sections of film. Shrinking technique — how to achieve a drum-tight finish without creating holes or thin patches. Clipping — using scaffold clips to hold film in position before welding. Patching and repair — how to fix holes and seal around protrusions using patch tape.

Application-Specific Skills

For scaffold work: setting up the scaffold structure correctly for shrink wrapping, hanging side facades, constructing and sheeting temporary roofs, final seal techniques for containment projects.

For industrial and modular: total encapsulation technique, sides-only wrapping with timber battening, film handling for wide-format rolls.

Assessment and Certification

A reputable training course should include a written assessment to test knowledge alongside the practical element, and issue a certificate of competency on completion. Keep the completed assessment forms — they provide an audit trail demonstrating that your team has been trained and assessed to the required standard.

Note: there is no nationally accredited card scheme for shrink wrap installation comparable to CSCS or IPAF. Any supplier claiming endorsement by the CITB or similar bodies for their shrink wrap training is not being accurate. What matters is that the course is delivered by trainers with genuine installation experience and that assessment records are properly documented.

How to Get the Most From Your Training Investment

Training is only valuable if it translates into competent performance on real jobs. These are the factors that most affect whether it does.

Choose a Trainer With Real Installation Experience

A trainer with theoretical knowledge of shrink wrapping but limited time on the tools will teach you what is in the manual. A trainer who has spent years installing shrink wrap across a range of projects and conditions will teach you what the manual does not cover — the practical judgements, the shortcuts, and the solutions to problems that only experience reveals. Ask about your trainer's background before booking.

At Rhino, our trainers come from our own installation teams. They are active installers, not training specialists drafted in to deliver a course.

Keep Group Sizes Small

One trainer to four trainees is about the right ratio for practical shrink wrap training. Beyond four, each trainee gets insufficient time with the heat gun and the hands-on element suffers. If you have a larger team to train, split into multiple sessions or request additional trainers.

Choose the Right Training Environment

Training in your own yard on a small purpose-built scaffold structure is a good option for the initial session — everyone can see what is happening, mistakes can be made without consequence, and the trainer can give individual attention to technique. An undercover training area removes the weather variable entirely.

A two-day structure often works well: day one on a training structure in a controlled environment; day two on a live project with the trainer on site as support. This gives trainees the foundation skills on day one and real-world experience on day two, with the trainer available to guide rather than demonstrate. Some suppliers will offer the second day at a discounted rate, and if the second day is a live job, the completed work may offset some of the cost.

Start With Manageable Jobs

After training, resist the temptation to immediately take on the largest or most complex job available. Build confidence on smaller, more straightforward projects first — side encapsulation on a simple scaffold structure before tackling a large temporary roof. Skills consolidate with repetition, and early success builds the team's confidence and your client's trust.

Maintain Frequency

Shrink wrapping is a skill that degrades without practice. A team that wraps regularly will continuously improve. A team that wraps once every few months will struggle to maintain the standard achieved in training. If work volume is genuinely too low to maintain skills, this is a signal that the sub-contract model may be more appropriate for your business at this stage.

The Business Case — What Does In-House Shrink Wrapping Cost and What Can You Charge?

Important: The figures in this section must be confirmed before publishing. Keep this blog hidden until the film cost, labour day rate, and supply-and-fix market rate have been checked.

The following figures are indicative and based on typical UK market conditions. They should be used as a starting framework for your own assessment, not as guarantees.

Typical Material Costs Per Square Metre

Scaffold shrink wrap film, 300 micron flame retardant: approximately £1.75 to £2.10 per square metre depending on volume, based on 90 usable square metres per 7m x 15m roll.

Tape: approximately £0.11 per square metre, based on one roll per roll of film.

Gas: approximately £0.04 per square metre.

Total materials: approximately £1.90 to £2.25 per square metre.

Typical Labour Cost Per Square Metre

An experienced installer should achieve 150 to 200 square metres per day on a standard scaffold side encapsulation. Temporary roofs and complex containment jobs will be slower — allow 100 square metres per man day as a conservative figure for mixed work.

At a day rate of £150 to £200 per operative, labour cost per square metre is approximately £0.75 to £2.00 depending on productivity and job complexity.

Typical Market Rate for Supply and Fix

Most specialist installers charge from £6 to £8 per square metre for supply and fix of scaffold shrink wrap, with temporary roofs and containment work typically at the higher end or above.

The In-House Margin

At a total in-house cost of approximately £3 to £4 per square metre, materials plus labour, against a market rate of £6 to £8 per square metre, in-house shrink wrapping can generate a margin of £2 to £5 per square metre on the work your team delivers. On a 1,000 square metre project, that is £2,000 to £5,000 of additional margin that would otherwise have gone to a sub-contractor.

The training and equipment investment — typically one or two heat gun kits and a training session — is recoverable within a handful of jobs at that margin.

What You Need to Get Started

The essential kit for a new in-house shrink wrap installation capability:

Heat gun kit: one gun to start, two for commercial-scale work. Each kit includes the gun, regulator, hose, and carry case. Propane gas cylinders, usually 13kg, are sourced locally and not typically supplied by your shrink wrap supplier.

Materials start up kit: a selection of film, tape, and scaffold clips. Rhino supplies a start up kit designed for a first job, allowing you to get started without committing to full pallet quantities.

Training: one day minimum, two days recommended. Book training before or alongside ordering your first materials — the two are closely connected.

Leather welding gloves: essential and easy to overlook. Make sure every operative has a pair before starting work.