Work out the approximate amount of scaffold sheeting needed before ordering material. Enter the scaffold face dimensions and choose between individual sheets or roll sheeting to estimate coverage, overlaps, drops and total quantity.
Estimate scaffold sheeting from the actual face dimensions and the product format you intend to use. Choose individual sheets or rolls, then enter the sheet size, lap and cutting allowance rather than relying on a generic coverage figure.
Compare local scaffolding quotes and tell the contractor that sheeting, shrink wrap or another scaffold cladding system is proposed.
A sheeting take-off starts with the part of the scaffold that will actually be covered, not simply the dimensions of the building. A straight elevation can be measured from its run length and sheeted height, while returns and differently sized faces are better calculated separately.
The calculator converts those measurements into a usable material quantity. Individual-sheet mode works with sheet width, sheet height and overlaps. Roll mode works out the number of full-height drops that can be cut from each roll, making the result more practical than relying on square metres alone.
Sheet dimensions and effective coverage are not the same thing. Once two neighbouring pieces overlap, part of the second piece no longer contributes new coverage. The same applies where sheets are stacked vertically.
Rather than dividing scaffold area by sheet area, the calculator reduces the useful coverage of every repeated sheet by the overlap you enter. This gives a more realistic count across long elevations where a small lap is repeated many times.
Roll sheeting is treated as a series of full-height vertical drops. The calculator first works out how many drops are needed across the scaffold run, then checks how many complete drops can be cut from a single roll.
This matters because unused material at the end of a roll may not be long enough for another drop. A roll can therefore contain enough total square metres on paper while still being unable to provide the required number of continuous lengths.
Front elevations, gable ends, rear elevations and short returns rarely share exactly the same dimensions. Where measurements differ, run the calculator once for each face and add the quantities afterwards.
This is particularly useful on irregular buildings, chimney access scaffolds and enclosures that stop or start at different heights. Separate calculations make it easier to see where cutting and additional overlaps are likely to occur.
A mathematical layout assumes every sheet arrives usable and every cut goes exactly as planned. Real projects can involve damaged material, awkward junctions, trimming, openings and offcuts that cannot be reused.
The extra-allowance field lets you add spare material after the basic layout has been calculated. It remains editable because a simple rectangular elevation should not automatically receive the same allowance as a heavily interrupted enclosure.
This calculator deliberately stops at material quantity. Sheeting changes how wind acts on a scaffold, so the fact that a certain number of sheets fit the elevation does not mean the existing scaffold is suitable for enclosure.
HSE advises that scaffold suppliers or designers should be told before sheeting or debris netting is fitted. The cladding type, fixing arrangement, ties and scaffold configuration must be dealt with through the appropriate scaffold information or design rather than inferred from a material calculator.
The result is built from measurable material inputs, so you can replace the defaults with the dimensions supplied for the sheeting product being used.
This calculator estimates the amount of material needed to cover a measured scaffold elevation. It starts with the run length and sheeted height, then applies the product dimensions, overlap and any extra allowance you choose.
It is a purchasing and planning tool rather than a scaffold design tool. The result tells you how many individual sheets or rolls may be required; it does not decide whether the scaffold can safely carry the proposed enclosure.
Measure the horizontal run that will actually be enclosed and the vertical distance over which the sheeting will be fitted. Use scaffold dimensions rather than assuming the building façade and scaffold are exactly the same size.
Where several faces have different measurements, calculate them separately. Adding different elevations into one average rectangle can hide extra material needed at returns, corners and changes in height.
Enter the height of the section of scaffold that will receive the sheeting. A scaffold can extend above a roof line, stop below another part of a building or contain un-sheeted lifts, so the building height alone may not represent the material requirement.
If the enclosure is intended for roofing work, the dimensions of the access scaffold and any enclosure should be considered separately from the cost of the roofing scaffold itself. See our guide to scaffolding for roof repairs for the wider project context.
In individual-sheet mode, the first sheet provides its full nominal width and height. Each following sheet contributes its nominal dimension minus the overlap entered in the calculator.
That is why increasing the lap can increase the number of sheets required even though the scaffold face stays the same size. Always use the overlap required by the actual sheeting system rather than copying a generic figure from another product.
Yes. Select roll sheeting and enter the roll width, roll length, overlap between neighbouring drops and any additional length required for each drop.
The calculator determines how many full-height drops are needed across the scaffold face, how many complete drops can be cut from one roll and how many rolls are required after the extra allowance is included.
A drop is one continuous length of sheeting running vertically over the height entered in the calculator. In roll mode, the roll is treated as being cut into full-height drops.
This approach is deliberately conservative because it does not assume that several short offcuts can be joined to create another full-height drop. Actual installation methods should follow the chosen system and manufacturer guidance.
The calculator divides the roll length by the required cut length for each drop and rounds down to a whole number. The cut length is the sheeted scaffold height plus any additional trimming or fixing allowance you enter.
For example, a roll may contain plenty of total square metres but still produce fewer usable drops if each individual drop is long. This is why roll length and scaffold height both matter.
Yes, when the elevations are genuinely similar. Enter the number of matching faces and the calculator multiplies the sheet or drop requirement accordingly.
Where the front, rear and gable elevations differ in length or height, calculate them separately and add the results. Separate calculations are usually clearer and reduce the chance of underestimating material at irregular faces.
Returns should be measured as additional scaffold faces rather than simply adding a small percentage to the main elevation. A return has its own width, height and overlap pattern.
Corners can also change the way sheets are lapped or fixed. If the enclosure runs close to a neighbouring property or requires access beyond the site boundary, the access issue is separate from material quantity; our guide explains whether a neighbour can refuse scaffolding access.
No. The calculator treats each entered elevation as a complete rectangular sheeted area. This avoids assuming that material removed around an opening can automatically be reused elsewhere.
For large permanent openings, you can run separate calculations for the solid sections around them. For small openings, leaving them within the main measured area normally gives a more cautious material estimate.
There is no single percentage that suits every project. The appropriate allowance depends on the product, the number of cuts, irregular geometry, damaged material, openings and how much usable material can realistically be recovered from offcuts.
The calculator therefore leaves this as an editable input. Use a figure that reflects the actual installation rather than treating the default as a specification.
No. Sheeting, reinforced sheeting, shrink wrap and debris netting can have different levels of permeability, fixing arrangements and performance in wind. They should not be treated as interchangeable simply because each can be fitted to the outside of a scaffold.
This calculator is aimed at solid or substantially enclosed scaffold sheeting quantities. If the product is a net, use the dimensions and installation details supplied for that net rather than assuming the same overlaps.
Yes. A sheeted scaffold presents a much larger surface to the wind than an open scaffold. HSE guidance specifically warns that sheeting or debris netting should not be added without informing those responsible for the scaffold, because the structure needs to be suitable for it.
The quantity calculator deliberately avoids turning that issue into a second structural calculation. If you are looking for a different type of calculation, our scaffolding load calculator is a separate tool with a different purpose.
Do not assume an existing open scaffold can simply be enclosed because the material fits. The scaffold provider or designer needs to know that sheeting is proposed so the configuration, ties and other relevant details can be checked.
The amount of material required and the suitability of the scaffold are two separate questions. This page answers the first only.
It can be used as an early material-area estimate if you enter dimensions that match the shrink-wrap product and installation method. Shrink wrap is normally installed as a system, however, and seams, heat shrinking, edge details and fixing arrangements can affect the quantity used.
For an accurate order, compare the calculator result with the product supplier’s coverage information and the installation plan.
The calculator is designed primarily for vertical scaffold elevations. A temporary roof has slopes, ridges, eaves, overlaps and potentially different sheet orientation, so a simple vertical-face calculation should not be used as the final roof material take-off.
If you are budgeting for the wider structure, our guide to temporary roof scaffolding costs covers that type of project separately.
No. Fixing type and frequency are intentionally excluded. Fixing requirements depend on the cladding system, wind factors, scaffold configuration and the applicable design or recognised configuration.
NASC guidance states that fixing frequency needs to follow the relevant TG20/TG30 information or the scaffold design. Material area alone is not enough to determine a safe fixing pattern.
It may be used on some chimney access arrangements, but chimneys create small faces, returns, roof junctions and exposed positions that make a simple rectangular estimate less representative.
Measure each face individually and expect more cutting than on a long straight elevation. If you are comparing the overall project budget, see our guide to chimney scaffolding costs.
Use the dimensions that describe the product you will actually install. If the supplier quotes a nominal sheet size but a smaller effective coverage after laps, enter the nominal size and then enter the required overlap separately.
For rolls, use the actual roll width and length. Small differences become significant when repeated over a long elevation.
For a straight rectangular elevation using known product dimensions, the calculator can give a useful early quantity. Accuracy reduces when the scaffold has steps, returns, openings, roof interfaces, different lift heights or several sheet types.
The safest approach is to treat the result as a take-off starting point and compare it against the actual scaffold drawing and sheeting layout before ordering.
Yes, as background information. Giving a contractor the approximate run, sheeted height and intended enclosure can help them understand the scope, but the contractor still needs to assess the scaffold and confirm that the proposed cladding is appropriate.
Sheeting can also affect the overall price of access work. For a general benchmark, see our guide to house scaffolding hire costs. You can also return to the scaffolding calculator homepage for other planning tools.
Use the calculator as an early material take-off, then check the result against the actual scaffold dimensions, sheeting product and installation plan before ordering. Anyone proposing to add sheeting to a scaffold should make that requirement known to the scaffold contractor or designer.
