DIY

How Many Shingle Bundles Do You Need?

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate roofing squares, bundles, and materials from your roof footprint and pitch.

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

In this article

Calculating Roof Area from Footprint
Roofing Squares and Bundles
DIY vs Professional Roofing

Área do Telhado

A área do telhado é maior que a do piso por causa da inclinação. Multiplique a área do piso pelo fator de inclinação. 30% de inclinação: ×1,04. 50%: ×1,12. 100% (45°): ×1,41. Casa de 100 m² com 30% de inclinação: 104 m² de telhado. No Brasil, as telhas mais comuns: cerâmica/barro (a favorita nacional), fibrocimento e metálica.

Consumo por Tipo

Telha cerâmica plan: 26/m². Portuguesa: 16/m². Colonial: 24/m². Fibrocimento (Eternit): ~2 chapas/m². Telha sanduíche (metálica): por encomenda. A telha cerâmica portuguesa é a mais popular no Brasil por sua estética e isolamento térmico natural.

⚡ CalcWolf Insight

Architectural (dimensional) shingles cost only 15-25% more than 3-tab but last 30-50 years vs 20-25 years. They also offer better wind resistance (130 mph vs 60-70 mph) and significantly improve curb appeal. The upgrade pays for itself in avoided re-roofing costs.

Frequently asked questions

Quantas telhas para 100 m²?▾

Portuguesa: ~1.600 telhas. Colonial: ~2.400. Cerâmica plan: ~2.600.

Quanto custa retelhamento?▾

Cerâmica: R$60-120/m² com mão de obra. Fibrocimento: R$40-80/m². Metálica/sanduíche: R$80-150/m².

✓ Math logic verified against primary sources → See our verification process

Kevin Glover · @gloverbuilds

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 →