Compare wallpaper and flooring quotes before signing
Replacing wallpaper and flooring before moving in or finding a new tenant can produce very different quotes for the same home.
One quote may cover materials only, another may include labour and sundries, and a third may exclude ceiling work or removal of the old floor.
This calculator multiplies measured quantities by the prices you enter, separating materials, labour and additional work so you can check omissions before a contract.
Use the interior cost calculator alongside it when you also need to plan the other renovation trades.
Korea-based quantities and currency
Both language versions use the same calculation functions, Korean won (KRW) and square metres.
The tax setting uses Korea’s 10% VAT rate where prices are confirmed to exclude VAT; it does not decide whether a supplier or transaction is taxable.
Prices start at zero, while measurements and allowances are editable teaching assumptions.
The optional example is fictional, not a 2026 market price list.
Decisions this helps you make
- Compare paper and vinyl-coated wallpaper for a rental home using the same measured scope.
- Separate the material-price effect of changing vinyl thickness or selecting engineered flooring.
- Specify partial wallpapering, ceiling work and door trim in writing.
- Print an itemised schedule and obtain three quotes against the same scope and budget ceiling.
Separate gross home area from actual work area
Walls and ceilings
Add the lengths of all walls that will receive wallpaper, including each room and the living area, then enter the wall height.
Count both faces of a partition if both will be covered.
Deduct large windows and doors that will not be papered, and enter ceiling area separately.
Calculate distinct zones separately when heights differ substantially or the walls and ceiling use different products, then combine their quotes.
Floors and gross area
Measure only the floor that will receive new material.
Bathrooms, balconies and areas under fixed cabinets may be outside the contract, so the entire exclusive-use apartment area is not automatically the flooring quantity.
Gross home area is optional and changes only a separate per-pyeong display; it never changes material quantities or total cost.
If you know only the advertised apartment size, obtain a plan and a site measurement before relying on a quote.
An advertised 25-pyeong or 34-pyeong home does not establish the number of rooms, total wall length, ceiling height or included work.
Enter measurements in m²; the supplementary conversion uses 1 pyeong = 400/121 m².
Compare costs per pyeong only when the denominator is the same: actual floor work area and gross home area give different figures.
Wallpaper rolls and flooring quantity formulas
From measured area to budget quantities
- Net wall area = total wall length × height − excluded openings area
- Wallpaper work area = net wall area + included ceiling area
- Wallpaper purchase area = work area × (1 + wallpaper waste allowance ÷ 100)
- Automatic rolls = round up (purchase area ÷ coverage per roll)
- Floor purchase area = actual floor work area × (1 + floor material allowance ÷ 100)
Each wallpaper type has its own editable coverage per roll.
The initial 16.5 m² is a teaching assumption: replace it with the actual width, length and package specification of the product being quoted.
Manufacturer Edenbio illustrates its own 1.06 m × 15.6 m product yielding six full drops when cut for a 2.4 m wall height.
Its geometric area of 16.536 m² therefore does not equal the area of usable full-height drops.
That product example is not a universal specification for every paper, coated or flame-retardant wallpaper.
Automatic rolls are not a confirmed order quantity
The model applies your allowance to surface area.
It does not optimise pattern repeats, cutting direction, offcut reuse or separate room colours.
Enter an installer-confirmed roll count to override the estimate; enter 0 to return to automatic calculation.
A manual count below the area estimate triggers a warning.
Flooring package rounding, sheet width and cutting direction also need a supplier check.
If a quoted rate already allows for cutting waste, avoid applying the same allowance twice.
Compare three wallpaper types and four flooring types
The wallpaper categories are paper, vinyl-coated wallpaper commonly called silk wallpaper in Korea, and flame-retardant products.
Flooring options are 1.8 mm vinyl sheet, 2.2 mm vinyl sheet, engineered flooring and luxury vinyl tile (LVT).
A category name does not establish a product specification, installation method or site condition.
Selecting the flame-retardant category does not determine legal suitability for a building; confirm any required documentation with the supplier.
What the twelve combinations mean
Enter low and high prices for alternative materials to compare 3 × 4 combinations with the same labour and additional work.
Changing a wallpaper product’s coverage also recalculates its automatic roll quantity.
If you disable one trade, only the active trade’s material alternatives are compared.
Combinations with missing required prices remain unpriced.
Differences compare the low endpoint with the selected low endpoint and the high endpoint with the selected high endpoint; they are not probabilistic savings intervals.
If switching from coated to paper wallpaper or from vinyl sheet to engineered flooring changes labour or removal work, update those inputs and calculate again.
Enter labour, trim, removal and repairs separately
Workers and work days
For each trade, labour cost = workers × days × price per person-day.
Two workers for one day means two person-days; two workers for two days means four.
The initial crew sizes and days are not productivity standards.
Use the installer’s site-specific work plan.
If an entered material rate includes installation, or you will do the work yourself, set separate labour person-days to zero and review the omission notice.
Units for additional work
Wallpaper removal, floor removal, mould treatment or filling, and floor levelling each use their own work area multiplied by a unit price.
Door trim uses a set count, while moulding and skirting use length.
Agree what faces and sundries each door trim set includes before comparing vendors.
A quantity of zero excludes that item.
The calculator does not infer the need for mould diagnosis or leak repairs from a selected repair area.
Use other costs for paste, adhesives, delivery, lifting, protection, furniture moving, waste disposal and minimum call-out charges that are not already included elsewhere.
Adding disposal twice or adding labour to an installed material price distorts the comparison.
If the project also needs leak diagnosis and source repair, check that separate scope in the water leak detection and source repair estimate calculator.
Step-by-step use and incomplete estimates
- Select wallpaper, flooring and ceiling scope, then enter actual wall lengths and areas.
For partial work, enter only the affected surfaces.
- Enter product coverage and low and high unit prices.
For a single confirmed price, use the same amount in both fields.
- Check labour, removal, repairs, door trim, moulding and other costs.
An active quantity with a zero lower unit price is treated as needing confirmation, not as a confirmed free service.
- Align all prices to one VAT basis, then enter contingency and your available budget.
Reset returns measurements, prices and options to their initial state.
- Review the selected item schedule and material alternatives, then print or save a PDF.
If inputs started from the fictional example, that note remains visible; verify every value before using the document for a contract.
The result is hidden if a high price is below its low price or excluded openings exceed the entire wall area.
When prices are missing, the entered-cost subtotal remains visible with an incomplete label, while budget assessment and affected material combinations are withheld.
Use zero quantities for genuinely excluded additional work, and confirm the final quote has no unrecorded charges.
Fictional example: 193 m² of wallpaper and 59 m² of floor
These assumptions verify the calculation and are not market averages or 2026 installation prices.
Walls of 60 m × 2.4 m minus 10 m² of openings give 134 m²; adding a 59 m² ceiling gives 193 m².
A 10% wallpaper allowance produces 212.3 m², which rounds up to 13 rolls at 16.5 m² per roll.
The 59 m² floor with a 5% allowance requires an area-based material quantity of 61.95 m².
Fictional vinyl-coated wallpaper and 2.2 mm vinyl flooring budget| Item and assumption | Low (KRW) | High (KRW) |
|---|
| 13 rolls × KRW 30,000–40,000 | 390,000 | 520,000 |
| 61.95 m² × KRW 15,000–20,000 | 929,250 | 1,239,000 |
| Wallpaper: 2 person-days; floor: 1; KRW 200,000–250,000 each | 600,000 | 750,000 |
| Other costs; additional work quantities are zero | 100,000 | 150,000 |
| Subtotal | 2,019,250 | 2,659,000 |
| 10% VAT added | 201,925 | 265,900 |
| Construction cost | 2,221,175 | 2,924,900 |
| 10% reserve on construction cost | 222,118 | 292,490 |
| Total budget | 2,443,293 | 3,217,390 |
Each item, added VAT and reserve is rounded to the nearest whole won before being summed.
The resulting total is KRW 2,443,293–3,217,390.
A KRW 3,000,000 budget covers the lower estimate but may fall short at the upper end.
Before choosing cheaper materials, check for omitted work and narrow the quantities and prices with actual quotes.
Interpret VAT, contingency and budget status
Construction cost versus cash reserve
The default assumes VAT is already included.
Only select excluded when every entered price uses that basis; the model then adds 10% once to the subtotal.
Contingency is your percentage of construction cost after VAT, shown separately from confirmed invoiced work.
Align mixed tax bases before entering prices and ask the vendor if tax treatment is unclear.
The calculation does not decide input-VAT deductions or refunds.
Budget sufficiency
A budget below the low endpoint is insufficient within the entered range.
A budget from the low endpoint up to, but below, the high endpoint may be insufficient; a budget at or above the high endpoint covers the entered range.
A zero budget means unentered, not a finding that you have no funds.
Missing required prices prevent a sufficiency decision.
Hidden work can exceed the entered high prices, so this status is not a guarantee of the final contract total.
Practical scenarios and quote checks
- Occupied home: confirm furniture moving, protection, work sequence and return visits.
Replace an empty-home labour assumption with the actual schedule.
- Ceiling only: set wall length and openings to zero, enter the ceiling area, disable flooring, and include necessary protection in other costs.
- Mould or leaks: separate finish replacement from diagnosis, drying and source repairs.
A surface repair allowance does not establish that the cause of recurring damage has been removed.
- End of tenancy: replacement cost and liability are separate questions.
This tool does not decide deposit deductions, depreciation, damage responsibility or contractual restoration duties.
- Cheaper quotes: a lower total does not establish the same product or service.
Record product codes, substrate preparation, finish inspection, disposal and approval conditions for extra charges in writing.
Frequently asked questions
Why do prices initially show zero?
The tool does not invent a nationwide installation tariff.
Load the fictional example to learn the flow, then replace every price with vendor quotes.
Missing prices for active work are marked as an incomplete estimate.
Can paper and coated wallpaper need different labour?
Yes, installation methods and substrate preparation can change the work.
The combination table isolates materials, so update labour and additional work separately when changing the actual specification.
Can I order the automatic number of rolls immediately?
It is an area-based budget estimate.
Use an installer-confirmed order quantity after checking pattern repeats, height, cutting waste and separate colours.
Two rolls with the same nominal area can yield different useful full-height drops.
Can I calculate wallpaper or flooring alone?
Disable the unwanted trade to exclude its material, labour and related removal or repairs.
Check whether shared trim, moulding and other costs are still needed for the remaining work.
How do I enter one fixed, VAT-inclusive quote?
Enter the fixed unit price as both low and high.
Select VAT included to prevent adding tax again, and enter a 0% reserve if no extra contingency is wanted.
The tool does not determine tax deductions or refunds.
Sources and review date
References were checked September 5, 2026.
Value-Added Tax Act Article 30 was verified directly through Korea’s National Law Information OPEN API: current law ID 001571, MST 276117, effective January 2, 2026, with a 10% rate.
Wage publications and product specifications do not guarantee a private contractor’s final price.
Recheck the latest applicable date, actual product and site quote before contracting.
Collect quotes against the same scope
Align measurements, product specifications, workers and days, removal and additional work, and VAT basis before printing the schedule.
Compare the inclusions in three written quotes to make a concrete material choice and set a budget ceiling.
Return to the wallpaper and flooring calculator