Skip to main content
Calcolatore Gratuito di Malta per Piastrelle

Calcolatore Thinset

Calcola esattamente la quantità di malta per piastrelle necessaria per il tuo progetto. Inserisci area, formato piastrella, tipo di spatola dentata e adesivo per stimare sacchi, resa, acqua e costi.

I calcoli integrano i dati delle schede tecniche dei produttori (TDS) e spiegano chiaramente ogni formula.
Dettagli Progetto
| |
ft
×
ft
ANSI A118.4HT
Consiglio Automatico
10%
0% (Exact) 10% (Standard) 15% (Cuts) 20%+
$
Risultati del Calcolo
Acquisto Raccomandato
3
sacchi di malta da 25 kg / 50 lb
Peso Totale
150 lb
~68 kg
Resa per Sacco
40 ft²
1/2×1/2 trowel
Area Effettiva
198 ft²
incl. 10% waste
Acqua d'Impasto
16.5 qt
~4.1 gal total
Costo Stimato
$74.97
@ $24.99/bag
Back-Butter
Recommended
For 12×24 LFT
Recommended: 1/2 × 1/2 in Square Notch

Standard starting recommendation for 12×24 porcelain tile to ensure minimum 80% to 95% mortar coverage.

Calcolatore Gratuito di Malta per Piastrelle

Come Usare il Calcolatore

Ottieni una stima precisa in 6 semplici passi — Modalità Rapida per il fai-da-te o Modalità Pro per i professionisti.

1 Step 1

1. Misura della superficie

Inserisci lunghezza × larghezza, scrivi i metri quadri netti o somma più stanze.

Inserisci lunghezza × larghezza, scrivi i metri quadri netti o somma più stanze.
Tip: Measure niches, tub aprons and steps separately.
Step details: 1–6 Steps
1
Step 01

1. Misura della superficie

Inserisci lunghezza × larghezza, scrivi i metri quadri netti o somma più stanze.

Step 1
2
Step 02

2. Formato delle piastrelle

Scegli il formato (mosaico, 30×30, 60×60, 60×120 cm) per definire la dentatura del frattone.

Step 2
3
Step 03

3. Scelta del frattone dentato

Usa la nostra raccomandazione automatica secondo norma o seleziona la dentatura desiderata.

Step 3
4
Step 04

4. Selezione del collante

Scegli un adesivo migliorato (C2 S1) o prodotti specifici di marchi leader.

Step 4
5
Step 05

5. Aggiunta sfrido e tagli

Aggiungi il 10-15% per sfrido e tagli e attiva la doppia spalmatura per grandi formati.

Step 5
6
Step 06

6. Riepilogo sacchi e acqua

Visualizza immediatamente il numero di sacchi interi con arrotondamento e i litri d'acqua.

Step 6
Quick Answer

Quanta Malta per Piastrelle Serve?

A standard 25 kg / 50 lb bag of thinset covers between 35 and 95 sq ft (3.5 to 9 m²) depending heavily on the trowel notch size:

High Yield
Mosaico e piccoli formati
7 – 9 m² per sacco da 25 kg
frattone con denti da 4 a 6 mm
Most Common
Piastrelle standard 30×30 cm
5 – 6.5 m² per sacco da 25 kg
denti quadri da 8 a 10 mm
Heavy Bed
Grandi formati (60×60 cm+)
3.5 – 4.5 m² per sacco da 25 kg
dente 12 mm + doppia spalmatura
Interactive Estimator

Room Size to Bag Estimator

150 sq ft
20 sq ft 150 sq ft 350 sq ft 600 sq ft
Bags Needed
4 Bags
sacchi da 25 kg
Total Mortar Weight
200 lb
~91 kg
Mixing Water
5.5 gal
clean cold water
Estimated Cost
$99.96
@ ~$25 per bag
* Based on standard format with 10% waste allowance. Open Full Pro Calculator →

Key Factors Determining Real Mortar Usage:

Trowel Notch Depth

A 12 mm notch applies more than double the volume of a 4 mm notch.

Back-Buttering Requirement

Mandatory for tiles > 15 inches to achieve 80-95% coverage (+15-20% mortar).

Product Density

Lightweight polymer mortars cover identical surface area with less weight.

Substrate & Membranes

Uneven screeds and uncoupling membranes absorb extra mortar.

Technical Standards

Tabella di Resa della Malta

Official coverage benchmarks per 25 kg / 50 lb bag across trowel tooth geometries.

Cross-Section Profile CAD Profile
Width: 1/2" (12.7mm) • Depth: 1/2" (12.7mm)
Select Trowel Notch Type:

1/2" × 1/2" Square Notch

Essential for achieving ANSI 80% (dry) and 95% (wet) bond contact.

Coverage / Bag 35 – 45 sq ft
Usage Rate ~1.11 – 1.43 lb/sq ft
Ridge Volume Heavy Volume
Trowel Notch Profile Typical Application Coverage / Bag Usage (kg/m² or lb/sq ft)
4 mm / 3/16" V-Notch
V-Notch Mosaics, glass tile, small wall tiles 8.5 – 10.5 m² (85-100 sq ft) ~2.4 – 2.8 kg/m²
6 mm / 1/4" Square
Square Tiles up to 20×20 cm (8×8"), subway wall tiles 7.0 – 8.5 m² (75-90 sq ft) ~2.8 – 3.5 kg/m²
8-10 mm / 3/8" Square
Square Floor tiles 30×30 cm (12×12"), pavers 5.0 – 6.5 m² (50-65 sq ft) ~3.8 – 5.0 kg/m²
12 mm / 1/2" Square
Square Large format 30×60, 60×60 cm (LFT) 3.5 – 4.5 m² (35-45 sq ft) ~5.5 – 7.0 kg/m²
15 mm / 3/4" U-Notch
U-Notch XXL porcelain panels, natural stone 2.8 – 3.5 m² (28-35 sq ft) ~7.0 – 8.8 kg/m²
Euro Slanted Notch
Slanted Heated floors, outdoor terraces, slabs 3.0 – 4.0 m² (30-40 sq ft) ~6.0 – 8.0 kg/m²
Tool Selection

Guida alla Scelta della Spatola Dentata

Match your tile dimensions to the recommended notch size and compressed bed thickness:

Tile Size Tile Type Notch Size Profile Compressed Bed Usage Rate
Mosaics (1" - 2")
Glass / Ceramic 4 mm / 3/16"
V-Notch
~1.5 mm Low consumption Prevents squeeze out into grout joints.
Subway & Wall (4×4)
Glazed ceramic 6 mm / 1/4"
Square
~2.0 mm Moderate Provides non-sag vertical hold.
Floor 30×30 cm (12×12)
Porcelain / Ceramic 8 mm / 3/8"
Square
~3.0 mm Standard Straight line troweling pattern.
Large Format 30×60 cm (12×24)
Rectified porcelain 12 mm / 1/2"
Square / U
~4.0 mm High Back-buttering mandatory for 80%+ contact.
Large Square 60×60 cm (24×24)
Polished porcelain 12 mm / Euro
Euro / U
~4.5 mm Very high Requires medium-bed non-slump mortar.
Wood Plank (20×120 cm)
Plank porcelain 12 mm / Euro
Slanted
~4.5 mm Very high Install with max 33% offset to prevent lippage.
Uncoupling Membrane (DITRA)
Polyethylene mat 4 mm / 3/16"
V / Square
~1.5 mm under mat Separate coat (~15 m²/bag) Follow membrane manufacturer specifications.
Format Guide

Fabbisogno in Base al Formato Piastrella

Recommended trowel size, average coverage and installation criteria by format:

Mosaics & Sheets

Up to 5×5 cm

Thin bed prevents squeeze-out between small joints.

Frattone dentato: 4 mm V-Notch
Resa per sacco: 8 – 10 m² / bag
Spessore letto compresso: ~1.5 mm
Doppia spalmatura: Not required
Classe adesivo: C2 TE S1 Polymer

Subway & Wall Tiles

7.5×15 to 10×30 cm

Non-sag thixotropic hold on vertical walls.

Frattone dentato: 6 mm Square
Resa per sacco: 7 – 8.5 m² / bag
Spessore letto compresso: ~2.0 mm
Doppia spalmatura: Optional
Classe adesivo: C2 T Non-Sag

Standard 30×30 cm

30×30 cm (12×12")

Classic format with easy bed leveling.

Frattone dentato: 8 mm Square
Resa per sacco: 5 – 6.5 m² / bag
Spessore letto compresso: ~3.0 mm
Doppia spalmatura: Recommended for uneven backs
Classe adesivo: C2 TE Standard

Large Format 30×60 cm

30×60 cm (12×24")

Back-buttering mandatory to eliminate hollow spots.

Frattone dentato: 12 mm Square
Resa per sacco: 3.5 – 4.5 m² / bag
Spessore letto compresso: ~4.0 mm
Doppia spalmatura: Mandatory (Double Buttering)
Classe adesivo: C2 S1 Medium-Bed

Large Square 60×60 cm

60×60 cm (24×24")

Heavy tiles require high bond strength.

Frattone dentato: 12 mm or Euro
Resa per sacco: 3 – 4 m² / bag
Spessore letto compresso: ~4.5 mm
Doppia spalmatura: Mandatory
Classe adesivo: C2 S1 Flexible

Wood-Look Planks

20×120 cm

Install with max 33% offset to prevent lippage.

Frattone dentato: 12 mm Slanted
Resa per sacco: 3 – 3.8 m² / bag
Spessore letto compresso: ~4.5 mm
Doppia spalmatura: Mandatory
Classe adesivo: C2 S1 Non-Slump

Gauged Porcelain Panels

120×260 cm+

Requires 2-person handling with vacuum suction cups.

Frattone dentato: Euro Slanted
Resa per sacco: 2.5 – 3.5 m² / bag
Spessore letto compresso: ~4.0 mm
Doppia spalmatura: Double coat floor + slab
Classe adesivo: C2 S2 Ultra-Flexible
Thickness & Bed Dynamics

Qual è lo Spessore Finale Sotto la Piastrella?

A common misconception is assuming trowel notch height equals final bed thickness under installed tile.

Interactive Cross-Section
Bond Coverage: Contact: 45% (Uncompressed)
Tile Body (10 mm / 3/8") 3/8" (9.5mm)
Combed Ridges (12 mm / 1/2")
/// SUBSTRATE CONCRETE BASE ///
Bed Thickness: Final Bed: ~3.5 mm (~1/8") Total Elevation: Total Elevation: ~13.5 mm
Physics Simulator

Tile Embedment & Ridge Collapse

Adjust Embedment Pressure:

Embedment Pressure: 0%
0% Fresh Combed 50% Squeezed 100% Full Collapse (95%)
Why Collapse Matters:

Uncompressed ridges leave 50% hollow air channels. Sliding tile collapses ridges into a continuous void-free structural bed.

1 Full Notch Height

Fresh Combed Ridges

Troweled at 45 degrees leaving open air channels.

Stage 01 TCNA A108
2 ~35-45% of Notch

Tile Pressed & Shifted

Ridges collapse sideways expelling air pockets.

Stage 02 TCNA A108
3 ~3.0 - 4.5 mm

Fully Cured Bed

Solid rock-like bond after cementitious hydration.

Stage 03 TCNA A108

Q Can I use thinset to level 15 mm of floor unevenness?

Limit Alert

No. Standard thinset shrinks if applied over 5 mm (1/4"). Use self-leveling underlayment or specialized medium-bed mortar.

Q How to calculate total floor elevation for doors?

Failure Risk

Tile thickness + compressed mortar bed + membrane = total elevation (typically 14 to 18 mm).

Visual Systems

Guide Visive e Albero Decisionale ANSI

Explore 5-layer uncoupling membrane anatomy and select the right ANSI / EN standard for your project.

Schluter DITRA Cross-Section Click on any layer to inspect technical details:

5-Layer Membrane Installation Anatomy

Click any layer of the uncoupling assembly below to inspect manufacturer specifications and coverage rules:

Uncoupling Membrane (Stress Relief Layer) Per roll

Absorbs substrate shear movements.

Smart Tool

Mortar Specification Wizard

Decision Wizard

Select 3 parameters to determine the exact mortar classification:

Recommended Class: ANSI A118.4HT

Modified Large and Heavy Tile (LFT) Mortar

Porcelain large-format tile requires high-polymer modified mortar with non-sag HT performance.

Environment Guide

Raccomandazioni per Tipo di Ambiente

Moisture exposure and traffic conditions alter mortar requirements:

High Moisture & Steam

Shower Walls & Cubicles

Eliminate hollow pockets to prevent moisture accumulation.

Contact Required: 95% Minimum Contact
Standard Class: C2 TE / ANSI A118.4T
Recommended Notch: 8 to 10 mm
Consumption Delta: +15% (with back-buttering)
Calculate for Shower →
Continuous Water Stream

Walk-in Shower Floors

Follow slope smoothly toward central drain.

Contact Required: 100% Solid Bed
Standard Class: C2 S1 Waterproof Grade
Recommended Notch: 6 to 8 mm
Consumption Delta: +10% extra mortar
Calculate for Shower Floor →
Dry Interior / Minor Splashes

Kitchen Backsplash

Non-sag paste or mortar keeps tiles aligned.

Contact Required: 80% Contact
Standard Class: C1 T or D2 Mastic
Recommended Notch: 6 mm Square
Consumption Delta: Standard coverage
Calculate for Backsplash →
Heavy Residential Traffic

Living & Hallway Floors

Supports heavy furniture and foot traffic.

Contact Required: 80-90% Contact
Standard Class: C2 TE Standard Flex
Recommended Notch: 10 to 12 mm
Consumption Delta: +10% cutting waste
Calculate for Living Area →
Thermal Expansion

Radiant Heated Floors

Air pockets act as insulation, blocking heat transfer.

Contact Required: 95% Minimum Contact
Standard Class: C2 S1 Highly Flexible
Recommended Notch: 12 mm Square / Euro
Consumption Delta: +15% (encapsulate heating cables)
Calculate for Heated Floor →
Sun, Rain, Freeze-Thaw

Outdoor Patios & Terraces

Trapped water freezes and cracks tiles.

Contact Required: 100% Void-Free Bed
Standard Class: C2 S2 Deformable
Recommended Notch: 12 mm + Back-Buttering
Consumption Delta: +20% for slope leveling
Calculate for Outdoor →
Submerged Water Pressure

Swimming Pools & Fountains

Resistant to chemical chlorine and hydrostatic pressure.

Contact Required: 100% Solid Bed
Standard Class: Epoxy R2 or C2 S2
Recommended Notch: Per tile format + full butter
Consumption Delta: +25% extra consumption
Calculate for Pool →
Rolling Carts & Heavy Footwear

Commercial Retail Floors

Prevents point-load tile cracking under cart wheels.

Contact Required: 95% Contact
Standard Class: C2 S1 Heavy-Duty
Recommended Notch: 12 mm or 15 mm U-Notch
Consumption Delta: +15% reinforcement
Calculate for Commercial →
Substrates & Prep

Requisiti per Tipo di Sottofondo

Substrate porosity, flexibility and moisture movement guide prep and adhesive choice:

Rigidity Check L/360 Compliant
J1
J2
Deflection Rating: L/360 Status: Safe for Tile
TCNA Structural Deflection Standard

Subfloor Deflection Gauge

TCNA requires subfloors to deflect no more than L/360 for ceramic/porcelain and L/720 for natural stone under full live loads:

Standard Compliance: Standard 3/4" subfloor over 16" o.c. joists is compliant with ANSI A108.01. Direct tile bond acceptable with A118.11 mortar or CBU underlayment.
Standard / L/360

Concrete Slab / Screed

The most rigid and stable base for tile.

Preparation: Clean, dust-free; check residual moisture
Impact on Usage: Standard base (no extra consumption)
Recommended Product: C2 TE Standard
EN 12467 / ANSI A118.9

Cement Backer Board (CBU)

Standard waterproof backing for showers and bathrooms.

Preparation: Tape joints with alkali-resistant mesh and mortar
Impact on Usage: +5% (board absorbs moisture)
Recommended Product: C2 TE Polymer
S1/S2 Flexible

Plywood / Wood Subfloor

Wood moves with humidity; avoid direct bond without membrane.

Preparation: Securely screwed; uncoupling membrane recommended
Impact on Usage: Membrane layer recommended
Recommended Product: C2 S2 High-Flex
CSTB / ANSI A118.10

Uncoupling Membrane (DITRA)

Isolates floor cracks so they never transfer to tile.

Preparation: Embed fleece solidly into fresh mortar
Impact on Usage: Double coat application (+100% total)
Recommended Product: Schluter ALL-SET / C2 TE
C2 S1 Renovation Grade

Tile-Over-Existing-Tile

Saves demolition dust and time during renovations.

Preparation: Degrease, scuff surface and apply bonding primer
Impact on Usage: Requires primer layer
Recommended Product: C2 S1 High-Bond
Dry walls only

Drywall / Gypsum Board

Suitable only for dry rooms without water spray.

Preparation: Dust-free and primed with acrylic sealer
Impact on Usage: Low consumption on smooth board
Recommended Product: C1 TE or Mastic
Jobsite Adjustments

Fattori che Influenzano il Consumo

On real jobsites, physical conditions deviate from theoretical lab numbers:

01 +15% to -20%

Trowel Angle & Pressure

Troweling at 60 degrees forms full ridges, while a flat 45-degree angle reduces thickness.

Severity Level Moderate
02 +10% to +25%

Tile Back Waffle Pattern

Deep grooves on tile undersides consume mortar to fill hollows.

Severity Level High
03 +15% to +30%

Substrate Unevenness

An unlevel floor forces the setter to thicken the mortar bed.

Severity Level Critical
04 +15% to +20%

Mandatory Back-Buttering

Applying a flat contact skim to large tiles reduces coverage per bag.

Severity Level High
05 +10% loss

Temperature & Air Drafts

Summer heat skins over mortar in the bucket prematurely.

Severity Level Moderate
06 +5% loss

Residue on Bucket & Tools

Mortar adhering to mixing paddles and pail walls.

Severity Level Low
07 +10% to +15%

Diagonal Layout & Cuts

Creates extra perimeter cuts and adjustments.

Severity Level High
08 +30% to +40%

DITRA Membrane Cavities

Filling square dovetail pockets takes extra mortar volume.

Severity Level Critical
Standard Rule Compliant Pass
Target: 80% Simulated: 82%
TCNA A108 Specification Standard

80% vs 95% Mortar Contact Rule

Minimum bond contact requirements to prevent cracked or debonded tiles:

80% Contact Requirement (Dry Interior)

For dry interior floors, at least 80% of tile back must be supported with continuous mortar bed.

2-Step Mortar Calculation for Schluter DITRA

Installing uncoupling membranes requires calculating 2 separate mortar coats:

Layer 1: Under Mat (Substrate to Mat) Layer 1
4 mm / 3/16" V-notch trowel
Yield: ~15 – 18 m² per 25 kg bag
Layer 2: Over Mat (Mat to Tile) Layer 2
10-12 mm notch by tile size
Yield: ~3.5 – 4.5 m² per 25 kg bag

For 20 m² with DITRA, you need ~1.5 bags for the mat + 5 bags for tiles = 7 bags total.

Standards & Specifications

Classificazioni e Standard ANSI / EN

International performance classifications explained clearly:

C1 / A118.1 Budget
Tier 0: Unmodified

Standard Mortar

For porous ceramic tiles on rigid concrete.

Polymers: Standard
Flexibility: Rigid
Water Resist: Normal
Strength Rating: ★☆☆☆
C2 / A118.4 Standard
Tier 1: Modified

Polymer-Modified Thinset

Industry standard for porcelain and indoor floors.

Polymers: Modified
Flexibility: Medium
Water Resist: Good
Strength Rating: ★★☆☆
C2 S1 / A118.11 Mid-High
Tier 2: Wood-Bond

Deformable Flex Mortar

For large format tiles and heated screeds.

Polymers: High
Flexibility: Flex ≥ 2.5 mm
Water Resist: Very good
Strength Rating: ★★★☆
C2 S2 / A118.15 Premium
Tier 3: Super-Bond Elite

Highly Deformable Super-Bond

For pools, wood floors, facades and gigantic slabs.

Polymers: Maximum
Flexibility: Flex ≥ 5.0 mm
Water Resist: Excellent
Strength Rating: ★★★★
Interactive Metric Matrix

Mechanical Strength Comparison

Click any classification below to dynamically compare shear bond strength, flexural tolerance, and polymer concentration:

Shear Bond Strength 600+ psi (A118.15)
Flexibility (S1/S2) Very High
Polymer Content Maximum
Material Chemical Base Best Application Wet / Exterior Safe Price Tier
Standard Thinset
Portland Cement + Polymer Universal floor and wall Yes / Excellent $$ (Standard)
Medium-Bed Mortar
Coarse aggregate cement Tiles > 15" & leveling Yes / Recommended $$$ (Medium)
Super-Bond (S2)
Elastomeric polymer Pools, terraces, wood Yes / Maximum $$$$ (Premium)
Tile Mastic (D2)
Water-based acrylic paste Kitchen backsplashes only No (dissolves in water) $$ (Ready mix)
Epoxy Mortar (R2)
2-Part epoxy resin Commercial kitchens, spas Yes / Impermeable $$$$$ (Highest)
Mixing Best Practice

Come Impastare la Malta e Calcolatore Acqua

Correct mixing ensures polymers develop maximum shear bond strength:

Phase 01

1. Add Water to Pail First

Always pour clean cold water into the bucket first, then add powder gradually to prevent dry clumps at the bottom.

Phase 02

2. Mix at Low Speed (3–5 min)

Use a drill under 500 RPM. High speed traps air bubbles that weaken tensile bond strength.

Phase 03

3. 10-Minute Slake Time (Mandatory Rest)

Let mortar rest undisturbed for 10 minutes so polymers activate chemically.

Phase 04

4. Remix for 1 Minute – Ready!

Remix for 1 minute without adding any extra water, even if it feels thicker.

Timer di riposo dell'impasto (10 minuti)
05:00 Digital Timer

Calcolatore acqua per frazioni di sacco

Calculate exact water in liters or quarts for partial batches:

Accurate Water Ratio
Target Consistency: Target: Creamy Peanut Butter
Quarts:
2.75 qt
Gallons:
0.69 gal
Fluid Oz:
88 fl oz
Liters of Water:
2.60 L

Warning: Excess water ruins bond strength and causes hollow tiles.

Practical Calculations

Esempi Pratici di Calcolo

Real project scenarios with transparent math. Click 'Load this room' to try:

4 m² (40 sq ft)

Powder Room (30×30 Ceramic)

Formula Calculation:
4 m² + 10% waste = 4.4 m² ÷ 5 m²/bag = 0.88 bags

A single bag easily covers powder rooms.

Trowel: 8 mm Square
Yield Result: Buy: 1 Bag
5 m² (50 sq ft)

Kitchen Backsplash (Subway Tile)

Formula Calculation:
5 m² + 10% = 5.5 m² ÷ 8 m²/bag = 0.69 bags

Non-sag wall mortar.

Trowel: 6 mm Square
Yield Result: Buy: 1 Bag
10 m² (100 sq ft)

Master Bath (30×60 LFT)

Formula Calculation:
10 m² + 10% + 15% back-butter = 12.65 m² ÷ 4 = 3.16 bags

Back-buttering requires 4th bag.

Trowel: 12 mm Square
Yield Result: Buy: 4 Bags
15 m² (150 sq ft)

Walk-in Shower (Floor & Walls)

Formula Calculation:
15 m² effective ÷ ~4 m²/bag = 3.75 bags

High-flex waterproof mortar required.

Trowel: Floor: 6 mm / Wall: 10 mm
Yield Result: Buy: 4 Bags
30 m² (300 sq ft)

Open Kitchen with DITRA

Formula Calculation:
Under mat: 2 bags + on mat: 8 bags = 10 bags

Double layer application for membrane.

Trowel: Under: 4 mm / Over: 12 mm
Yield Result: Buy: 10 Bags
50 m² (500 sq ft)

Basement Floor (60×60 Porcelain)

Formula Calculation:
50 m² + 12% waste + buttering = 65 m² ÷ 3.5 = 18.5 bags

Pallet delivery recommended for this quantity.

Trowel: 12 mm LFT
Yield Result: Buy: 19 Bags
80 m² (800 sq ft)

Whole House (Plank Porcelain)

Formula Calculation:
80 m² + 15% waste = 105 m² ÷ 3.3 = 31.8 bags

Long planks produce more offcut waste.

Trowel: Euro Slanted
Yield Result: Buy: 32 Bags
120 m² (1,200 sq ft)

Commercial Restaurant Floor

Formula Calculation:
120 m² + 10% = 152 m² ÷ 3.8 = 40 bags

C2 S1 heavy duty commercial bond.

Trowel: 12 mm Square
Yield Result: Buy: 40 Bags (1 Tonne)
Manufacturer Archive

Banca Dati Copertura Adesivi & Fabbricanti

Verified coverage benchmarks and water ratios directly from official Technical Data Sheets (TDS):

Product & Manufacturer Standard Class Yield 6 mm (1/4") Yield 12 mm (1/2") Water Ratio Data Sheet
Generic Polymer-Modified Thinset (ANSI A118.4)
Generic / Standard Industry Average 50 lb bag
ANSI A118.4 / A118.11 82.5 sq ft 45 sq ft 5–6 qts Scheda tecnica (TDS) ↗
MAPEI Ultraflex 2 Professional Tile Mortar
MAPEI 50 lb bag
ANSI A118.4, ANSI A118.11 82.5 sq ft 41.5 sq ft 5–6 qts Scheda tecnica (TDS) ↗
MAPEI Ultraflex LFT Large Format Mortar
MAPEI 50 lb bag
ANSI A118.4HT, ANSI A118.11 70 sq ft 40 sq ft 5.5–6 qts Scheda tecnica (TDS) ↗
Custom VersaBond Fortified Thin-Set Mortar
Custom Building Products 50 lb bag
ANSI A118.4, ANSI A118.11 90 sq ft 44.5 sq ft 5.5–6 qts Scheda tecnica (TDS) ↗
Custom VersaBond LFT Large Format Mortar
Custom Building Products 50 lb bag
ANSI A118.4HT, ANSI A118.11 75 sq ft 38.5 sq ft 5.5–6 qts Scheda tecnica (TDS) ↗
LATICRETE 254 Platinum Multipurpose Thin-Set
LATICRETE 50 lb bag
ANSI A118.15, ANSI A118.4, ANSI A118.11 87.5 sq ft 43.5 sq ft 5.25–5.75 qts Scheda tecnica (TDS) ↗
LATICRETE 253 Gold Modified Thin-Set
LATICRETE 50 lb bag
ANSI A118.4, ANSI A118.11 85 sq ft 41.5 sq ft 5–5.5 qts Scheda tecnica (TDS) ↗
Schluter ALL-SET Specialized Tile Mortar
Schluter Systems 50 lb bag
ANSI A118.4T, ANSI A118.11, ANSI A118.15T 80 sq ft 38.5 sq ft 4.75–5.25 qts Scheda tecnica (TDS) ↗
ARDEX X 5 Flexible Tile and Stone Mortar
ARDEX 40 lb bag
ANSI A118.4, ANSI A118.11 70 sq ft 34 sq ft 4.5–5 qts Scheda tecnica (TDS) ↗
TEC Full Flex Premium Polymer-Modified Mortar
TEC (H.B. Fuller) 50 lb bag
ANSI A118.4, ANSI A118.11 81.5 sq ft 40 sq ft 5–5.5 qts Scheda tecnica (TDS) ↗
Brand Calculators

Calcolatori per Marca

Each proprietary formulation yields slightly different square meter rates:

MAPEI

C2 TE S1 / ANSI A118.15

Ultraflex 2, Ultraflex LFT, and Ultralite lightweight mortars.

Ultraflex 1 Ultraflex LFT Kerabond
Calculate MAPEI Coverage → →

LATICRETE

Super-Bond A118.15

254 Platinum, 253 Gold, and 4-XLT high performance.

254 Platinum 4-XLT TRI-LITE
Calculate Laticrete Coverage → →

Custom Building Products

Industry Standard

VersaBond, VersaBond LFT, and FlexBond standard.

VersaBond ProLite FlexBond
Calculate Custom Coverage → →

Schluter Systems

DITRA & KERDI System

ALL-SET, FAST-SET, and DITRA-SET uncoupling mortars.

ALL-SET FAST-SET SET
Calculate Schluter Coverage → →

ARDEX

Lightweight Technology

X 5, X 77 Microtec, and X 78 high-yield formulations.

X 77 Microtec X 5 X 7 Plus
Calculate ARDEX Coverage → →

TEC (H.B. Fuller)

Commercial Grade

Full Flex, 3N1 Performance, and LFT mortars.

TotalFlex 3N1 Performance Super Flex
Calculate TEC Coverage → →

Bostik

Polymer Fortified

Bostik PM, Single-Flex, and Hydroment polymer thinsets.

BAM Big Tile & Stone PM Thinset
Calculate Bostik Coverage → →
Common Questions

Domande Frequenti

Authoritative answers grounded in ANSI standards, TCNA guidelines, and manufacturer specifications.