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CalcWolf DIY Calculadora de Drywall/Gesso Acartonado
DIY

How Many Sheets of Drywall Do You Need?

Calculate drywall sheets, joint compound, tape, and screws for any room. The complete drywall materials list.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

O Cálculo

Chapa padrão: 120 × 240 cm (2,88 m²). Área das paredes = perímetro × altura - portas e janelas. Quarto 4×3,5 a 2,60 m: 39 - 4,2 = 34,8 m² ÷ 2,88 = 12 chapas + 10% = 13. No Brasil, Placo e Knauf são as marcas mais comuns. O drywall é 30-50% mais rápido que alvenaria e gera menos entulho.

Tipos

Branca (ST): uso padrão. Verde (RU): áreas úmidas (banheiro, lavanderia). Rosa (RF): resistente ao fogo. Sempre use a verde em banheiros e lavanderias.

⚡ CalcWolf Insight

Using 4×12 sheets instead of 4×8 eliminates 33% of horizontal joints on standard 8-foot walls. Fewer joints means less taping, less compound, less sanding, and a smoother finished wall. The sheets are heavier and harder to handle but the finished result is noticeably better.

Frequently asked questions
Quantas chapas para quarto de 12 m²?
Paredes: 12-14 chapas. Teto: 4-5. Total: 16-19 + massa, fita e parafusos.
Drywall aguenta peso?
Com buchas próprias: até 20 kg/ponto. Para TVs e prateleiras pesadas: use reforço com travessa de madeira na estrutura.
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Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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