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Novoplan 2 Plus Coverage Calculator: How Many Bags of Self-Leveler?
Enter your floor area and the average pour thickness to see how many 50 lb (22.7 kg) bags of Novoplan 2 Plus to buy. MAPEI's coverage chart gives 24 sq ft per bag at 1/4 inch; the calculator scales that figure to your thickness. The numbers come from the US English technical data sheet MK 3000067, edition date February 18, 2025.
MAPEI Novoplan 2 Plus coverage
| Thickness | US | Metric |
|---|---|---|
| 0.125 in (3.2 mm) | 48 sq ft | 4.5 m² |
| 0.25 in (6.4 mm) | 24 sq ft | 2.2 m² |
| 0.5 in (12.7 mm) | 12 sq ft | 1.1 m² |
| 1 in (25.4 mm) | 6 sq ft | 0.6 m² |
| 2 in (50.8 mm) | 3 sq ft | 0.3 m² |
Source: MAPEI Technical Data Sheet: Novoplan 2 Plus Professional, Self-Leveling Underlayment (US English), MK 3000067 (24-3470), Edition date February 18, 2025, read 2026-10-18.
How the calculation works
bags = area × (1 + waste ÷ 100) × thickness ÷ (coverage at reference thickness × reference thickness), rounded up
Self-leveler volume scales with thickness: twice as thick needs twice as many bags. Low spots in the floor add to the real average thickness, so measure the deepest point and the average before you pour.
Worked example
A 200 sq ft floor poured 0.25 in thick with 10% extra: 220 sq ft to cover. One bag covers 24 sq ft at 0.25 in, so at 0.25 in it covers 24 × 0.25 ÷ 0.25 = 24 sq ft. 220 ÷ 24 = 9.17 bags, so buy 10 (500 lb).
MAPEI Novoplan 2 Plus key specs
| Product type | Self-leveling underlayment |
|---|---|
| Bag size | 50 lb (22.7 kg) |
| Mixing water per bag (max) | 5.28 US qt (5 L) |
| Thickness range | 0.125–2 in |
| Coverage (data sheet) | 24 sq ft (2.23 m²) per 50 lb bag at 1/4" (6 mm); 12 at 1/2", 9 at 3/4", 6 at 1", 3 at 2" (5 cm) |
| Bag sizes | 50 lb (22.7 kg) and 25 lb (11.3 kg) |
| Mixing water | 5 to 5.28 US qt (4.73 to 5.0 L) per 50 lb bag; 2.5 to 2.6 US qt (2.37 to 2.46 L) per 25 lb bag |
| Thickness | single lift 1/8" to 2" (3 mm to 5 cm); minimum 1/8" over the highest point of the floor |
| Mixing and flow time | mix 2 to 3 minutes; flows for up to 15 minutes |
| Walkable | avoid foot traffic for at least 2 to 3 hours |
| Install floor covering | non-moisture-sensitive coverings such as tile after 24 hours; moisture-sensitive coverings after 2 to 3 days (both at 70°F / 21°C and 1" thick) |
| Second coat | wait 24 hours before a second application of primer and self-leveler |
| Compressive strength | more than 2,700 psi (18.6 MPa) at 7 days and more than 4,200 psi (29.0 MPa) at 28 days (ASTM C109 modified) |
| Flexural and pull-out strength | flexural more than 1,050 psi (7.24 MPa), pull-out more than 500 psi (3.45 MPa), both at 28 days |
| Density | wet 124.8 lb/cu ft (2.00 kg/L); cured 128 lb/cu ft (2.06 kg/L) |
| Temperature | application 50–85°F (10–29°C); substrate kept at 50–90°F (10–32°C) for 48 hours before, during and after |
| Use | interior only; must be primed and covered with a floor covering; not a wear surface; no rolling dynamic loads for 3 days |
| Color and shelf life | gray powder; 1 year in unopened packaging at 73°F (23°C) and 50% RH |
What Novoplan 2 Plus is for
Novoplan 2 Plus is MAPEI's professional, cement-based self-leveling underlayment and repair mix for interior floors. You mix the powder with water, pour it onto a primed surface, and it flows out into a flat, smooth base for the floor covering that goes on top. MAPEI describes it as high-strength, and the data sheet backs that up with more than 4,200 psi compressive strength at 28 days. It is ready for tile in 24 hours and for moisture-sensitive flooring such as vinyl, wood or carpet in 2 to 3 days.
The data sheet lists it for leveling, smoothing and repairing residential and commercial floors before floor coverings go down, and for use over radiant-heated floors or to encapsulate hydronic or electric heating systems. It meets the compression and flatness requirements of ASTM F710 and ASTM F2873, the two standards resilient flooring makers usually point to. It is not a finished floor: cured Novoplan 2 Plus must be covered, it is for interior use only, and it does not stop moisture vapor coming up through a damp slab. Any moisture problem has to be solved before you pour.
Suitable substrates in the data sheet include concrete at least 28 days old, well-bonded ceramic, porcelain, quarry and natural stone tile, VCT, epoxy terrazzo, cement-based and epoxy moisture barriers, cement backer units, cured mortar beds, gypsum underlayments, and engineer-approved plywood or OSB on joists up to 19.2 inches on center that meet L/360. Nailed-down wood floors are allowed once they are covered with at least one layer of 5/8 inch plywood, glued and screwed.
How the calculator works out bags
With a self-leveler, the depth of the pour decides almost everything. A 50 lb bag makes a roughly fixed volume of material, about half a cubic foot. MAPEI's chart gives 24 sq ft at 1/4 inch. Pour twice as thick and the same bag covers half the area: 12 sq ft at 1/2 inch, 6 at 1 inch and 3 at 2 inches. Those rows all sit on one straight line, so the calculator uses 24 sq ft at 1/4 inch and scales it to the thickness you enter.
The one row that does not fit is 3/4 inch, where the chart says 9 sq ft. Scaling 24 sq ft at 1/4 inch gives 8. The calculator stays with 8, so on a large 3/4 inch pour it may suggest one more bag than the chart would. Running out in the middle of a self-leveler pour leaves a cold joint that is hard to hide, so a spare bag is the cheaper mistake. The data sheet's own density figures agree with the straight-line approach: a bag that makes half a cubic foot at about 125 lb per cubic foot of wet mix is close to what 50 lb of powder plus 5 quarts of water should give.
The calculator takes your area, adds the waste allowance you choose and divides by the coverage at your thickness. Bags are always rounded up. Enter the average thickness, not the deepest spot. Floors are rarely out of level by the same amount everywhere, so check the room with a laser level or a long straightedge, mark the low areas and estimate an average. If one zone is much deeper than the rest, run the calculator once per zone and add the results.
The calculator counts 50 lb bags. If you buy the 25 lb bag instead, double the number it shows. The 25 lb bag is handy for small rooms and patches where opening a second full bag would waste most of it.
Thickness range
Novoplan 2 Plus can be poured from 1/8 inch to 2 inches (3 mm to 5 cm) in a single lift, with at least 1/8 inch over the highest point of the floor. This calculator accepts that range. The coverage chart starts at 1/4 inch, so figures between 1/8 and 1/4 inch are scaled down from the 1/4 inch row rather than read off the chart. At 1/8 inch a 50 lb bag works out to about 48 sq ft.
If you need more than 2 inches, or a second lift, MAPEI asks you to wait 24 hours and prime again before the next pour. Plan the first pour so it reaches the final height in one go wherever you can. Deep holes and cracks in concrete should be filled with a MAPEI patching compound or screed first rather than with extra self-leveler.
Preparation and priming in brief
All substrates must be structurally sound, stable, solid, dry and primed with a suitable MAPEI primer; the only exceptions in the data sheet are MAPEI crack-isolation and uncoupling membranes such as Mapeguard UM and Mapeheat Membrane. Profiling concrete is not required for light or moderate traffic. For high traffic, heavy rolling loads or maximum-depth pours, MAPEI asks for a concrete surface profile of CSP #3 to #4, or a textured primer instead. On plywood, fill the joints with acrylic caulk so the fluid mix cannot run into the floor below. Do not pour over existing flooring, adhesive residue, asbestos-containing materials or standing water.
Temperature matters. The substrate must stay between 50°F and 90°F (10°C and 32°C) for 48 hours before, during and after the pour, and the room and substrate should be 50°F to 85°F (10°C to 29°C) during application and for 3 days either side. Close doors and windows, switch off HVAC and radiant heat, and keep direct sunlight off the area. Deliver the bags to a heated space at least 24 hours before work begins, and never let fresh material freeze.
Mixing and timing
Each 50 lb bag takes 5 to 5.28 US quarts (4.73 to 5.0 L) of clean water at about room temperature; a 25 lb bag takes 2.5 to 2.6 quarts. Measure the water into a mixing barrel or a pail that holds at least 5 gallons, add the powder slowly to keep dust down, and mix with a high-speed drill and an oval paddle for 2 to 3 minutes until there are no lumps. Overmixing, or moving the paddle up and down, traps air and can cause pinholes.
The mix flows for up to 15 minutes, so pour or pump it in ribbons and keep a wet edge. Work as a team, with one person mixing while another pours, to avoid trapped air and cold joints. Spread it with a gauge rake to the depth you want, then even the surface with a smoother. Novoplan 2 Plus is self-curing: do not damp-cure it or use curing and sealing compounds. Keep people off it for at least 2 to 3 hours, protect it from drafts and heat for 24 hours, and keep forklifts and scissor lifts off for at least 3 days.
FAQ
How much does a bag of Novoplan 2 Plus cover?
MAPEI's US data sheet gives 24 sq ft (2.23 m²) per 50 lb bag at 1/4 inch, 12 sq ft at 1/2 inch, 9 sq ft at 3/4 inch, 6 sq ft at 1 inch and 3 sq ft at 2 inches. MAPEI says the chart is for estimating only and that real coverage depends on the substrate, equipment, thickness and application method. A 25 lb bag covers half as much: about 12 sq ft at 1/4 inch.
Why does the calculator say 8 sq ft per bag at 3/4 inch when the chart says 9?
The calculator scales the 1/4 inch figure in a straight line, which matches every other row of MAPEI's chart. A bag makes a fixed volume, so a pour three times as thick as 1/4 inch should cover a third of 24 sq ft, which is 8. The 9 in the chart looks generous, so the calculator stays with 8 and may suggest one extra bag on a big 3/4 inch pour rather than leave you short.
How much water goes in a bag of Novoplan 2 Plus?
Use 5 to 5.28 US quarts (4.73 to 5.0 L) of clean water per 50 lb bag, or 2.5 to 2.6 quarts (2.37 to 2.46 L) per 25 lb bag, at about 70°F (21°C). Measure the water first, add the powder slowly and mix with a high-speed drill and an oval paddle for 2 to 3 minutes. MAPEI says to keep the ratio consistent and not to overwater. That is less water per bag than Ultraplan Easy takes, so do not reuse that number.
What is the difference between Novoplan 2 Plus and Ultraplan Easy?
Both are MAPEI interior self-levelers with the same 24 sq ft per 50 lb bag at 1/4 inch, so the bag count is the same. Novoplan 2 Plus is the slower one: tile after 24 hours and moisture-sensitive flooring after 2 to 3 days, against 3 hours and 16 to 24 hours for Ultraplan Easy. Its minimum lift is 1/8 inch instead of 1/16 inch, and it comes in a 25 lb bag as well as a 50 lb bag.
Does the concrete need to be shot blasted before Novoplan 2 Plus?
Not always. The data sheet says surface profiling of concrete is not required if the floor will only see light or moderate traffic. For high traffic, heavy rolling loads or pours at the maximum depth, MAPEI asks for an ICRI concrete surface profile of CSP #3 to #4 under the primer, or a textured primer instead of mechanical profiling. Every substrate still needs a suitable MAPEI primer, except MAPEI uncoupling and crack-isolation membranes such as Mapeguard UM.
MAPEI and MAPEI Novoplan 2 Plus are trademarks of their owner. This page is an independent estimate based on the published data sheet; check the bag label before mixing.