🖌 Plastering Calculator PRO
Area, volume, cement/sand mix, coats & cost — all in one.
Dimension Diagram — updates as you type
Wall elevation. Gross area minus window and door deductions gives the net plaster area.
1 Wall Dimensions
2 Window & Door Deductions
3 Plaster Configuration
4 Cost & Details
Results
Area
Plaster Volume
Materials
⚠️ Pre-Export Checklist
- Wall dimensions measured; openings deducted
- Plaster thickness matches specification per coat
- Mix ratio matches plaster type (cement/gypsum/lime)
- Surface preparation (hacking/bonding) planned
- Curing water arrangement for cement plaster
- Scaffolding or access for high walls arranged
Professional Plastering Estimation Guide
Show formulas, worked examples & pro tips ▼
Formulas
Gross Area= Wall Length × Wall Height × Number of Walls
Net Area= Gross Area - (Windows × Window Area) - (Doors × Door Area)
Plaster Volume = Net Area × Thickness × Number of Coats
Cement Bags= Volume × (1 / Total Ratio Parts) × Cement Factor
Sand Volume= Volume × (Sand Parts / Total Ratio Parts) × Sand Factor
Worked Example
4 walls 12 ft × 10 ft, 10mm thick, 2 coats, 1:5 mix, 2 windows + 1 door:
- Gross Area: 4 × 12 × 10 = 480 sq ft
- Deductions: (2 × 15) + (1 × 21) = 51 sq ft
- Net Area: 480 - 51 = 429 sq ft
- Volume (10mm, 2 coats): 429 × 0.0328 × 2 = 28.1 cu ft
- Cement: ~20 bags (50 kg) for 1:5 mix
- Sand: ~1.0 cu yd
Mix Ratio Guide
- 1:4 — External plaster, high-strength areas, damp-prone walls
- 1:5 — Internal walls, general-purpose plastering
- 1:6 — Internal smooth finish, backing coat, economy applications
Pro Tips
- Dampen walls 24 hours before plastering for better adhesion
- Apply scratch coat first for thick plaster jobs (>12mm)
- Use chicken mesh at joints between different materials
- Temperature should be 5-35°C during application and curing
- Keep plastered surfaces damp for 7 days after application
Plastering — 3D Preview
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Ilgili Insaat Hesaplayicilari
Frequently used together on the same project.
Client & Quote (prints on PDF & Excel)
Adjustments (applies to exports)
Contingency is added as a separate line on the exported cost summary. Waste % is printed as an advisory reminder.
Project notes (prints on PDF & Excel)
Result compare (A/B)
| Item | Pinned | Current | Change |
|---|---|---|---|
Saved rates auto-apply from your Price Library. Advanced details stay in your browser — nothing is uploaded except inside your own PDF/Excel exports.
Siva, duvar ve tavan yuzeylerine pumali veya dokulu bir kaplama uygulayarak duz, dayanikli ve gorsel olarak cazip bir bitis olusturma surecidir. Dogru siva malzeme hesabi her insaat projesi icin onemlidir.
Hesaplama sureci toplam yuzey alanini belirlemeyi, uygun siva kalinligini secmeyi ve gerekli siva karisim hacmini hesaplamayi icerir. Siva kalinligi tipik olarak 12 ile 20 milimetre arasindadir.
Cimento ve kum karisim orani siva turune gore degisir. Ic siva tipik olarak 1:4 veya 1:5 orani kullanirken, dis siva hava kosullarina dayaniklilik icin 1:3 ile 1:4 arasinda daha zengin karisimlar kullanir.
📖 Siva Malzeme Miktarlari Nasil Hesaplanir
Duvar ve Tavan Alanlarini Olcun
Sivanacak tum duvar ve tavanlarin toplam yuzey alanini hesaplayin.
Siva Kalinligini Belirleyin
Uygun siva kalinligini secin. Ic duvarlar 12-15 mm, dis duvarlar 15-20 mm, tavanlar 8-12 mm.
Siva Hacmini Hesaplayin
Toplam alani siva kalinligi ile carpyn. 10-15 yuzde fire icin ekleyin.
Karisim Oranini Belirleyin
Siva turune gore cimento-kum oranini secin.
Cimento ve Kum Miktarlarini Hesaplayin
Hacim ve orana bagli olarak bireysel miktarlari hesaplayin.
Su Ihtiyacini Ekleyin
Cimentonun kilogramina yakin 0.5-0.6 litre olarak su miktarini hesaplayin.
📐 Siva Hesaplama Formulleri
Temel formul: Siva Hacmi = Alan x Kalinlik x (1 + Fire Faktoru). 15 mm kalinlikta 12 yuzde fire ile 60 m2 duvar alani icin: 60 x 0.015 x 1.12 = 1.008 m3.
1:4 oraninda cimento icin: Cimento Hacmi = Siva Hacmi / (Toplam Parca x Cimento Parcasi). 5 parcada: 1.008 / 5 x 1 = 0.2016 m3 = yaklasik 290 kg = 6 torba.
⚠️ Siva Hesaplamalarinda Yaygin Hatalar
Pencere ve kapi acikliklarini cikarmamak
✓ Her zaman toplam duvar alanindan pencere ve kapi alanlarini cikarin.
Yanlis kalinlik kullanmak
✓
Koseleri ve kavuslari gormezden gelmek
✓ Pencere ve kapi kavuslari ek siva gerektirir.
Cekmeyi hesaba katmamak
✓ Siva kururken yuzde 1-2 ceker.
Kuru hacimden siparis vermek
✓
💡 Profesyonel Siva Ipuclari
Pumali yuzeylere sivadan once baglayici ajan veya PVA cozeltisi uygulayin.
Siva kaliciligini sabit tutmak icin rehberler veya seritler kullanin.
Sivayi dogru sicaklikta (5-30 derece) temiz suda karistirin.
Katlari onerilen araliklarda uygulayin.
Taze siva yuzeylerini 48 saat dogrudan gunes isigindan ve ruzgardan koruyun.
❓ Siva Hakkinda Sikca Sorulan Sorular
100 m2 ic duvar sivasi icin, 15 mm kalinlikta 1:4 oraninda: yaklasik 650 kg cimento (13 torba), 1.35 m3 kum.
Astari kat 10-12 mm, 1:5 oraninda. Ara kat 8-10 mm, 1:4. Son kat 2-3 mm, 1:3.
Astari kat en az 7 gun kurumaya birakin. Ara kat 5-7 gun.
Beton bloklar genellikle iyi bir baglanti saglar, ancak pumali olanlar baglayici gerekebilir.
Genellikle cok hizli uygulama, fazla kalinlik, hizli kuruma veya yanlis orandan.
Bircok noktada olcun ve ortalama boyutlari kullanin. 15-20 yuzde olmayan ekleyin.
🏗️ Pratik Siva Ornekleri
Pratik siva hesaplamalari formulun gercek projelere nasil uygulandigini gosterir.
Senaryo 1: Konut Odasi Sivasi. 5 x 4 metrelik oda, 2.7 m tavan yuksekligi. Net duvar alani 44.91 m2. Tavan 20 m2. Toplam 64.91 m2. 15 mm kalinlikta, 10 yuzde fire ile: 1.008 m3 siva.
Siva hesaplayicimiz ic ve dis duvar sivasi, tavan sivasi ve dekoratif bitis icin cimento, kum, su ve katki maddeleri icin dogru tahminler saglar.
✅Method, Sources & Review
Maintained by theBuildingCalc methods desk· Last reviewedSeptember 23, 2026. This calculator implements the standards and references below; every figure can be rechecked against the formulas and worked example on this page.
Results are estimates, not engineering advice. Verify against local codes and licensed professionals for structural, electrical, and gas work. See ourTerms. Spotted an error? Report it— corrections ship with the next review.