RenoAtlas.caArchitectural shingle
Verify coverage, nail zone, pitch, warranty and system accessories.
Roofing
Roof shingle calculator: area, pitch, bundles and accessories
Convert horizontal footprint to roof surface area, then use the actual bundle coverage.
Know before you start: The model assumes a simple two-slope roof. Dormers, valleys, hips, porches and complex shapes must be measured separately.
Editable calculator
Simple roof calculator
Use the exact coverage shown for your bundle.
Price the complete system
Underlayment and ice/water
Quantity and placement depend on system and applicable requirements.
Flashings
Walls, chimney, vents, valleys and penetrations are water details, not cosmetic accessories.
Ridge, starter and ventilation
Field shingle bundles are not the total roof cost.
Safety
Pitch, height and access can move the work from reasonable DIY to professional work.
Next useful pages
Related path
Continue with the right tools
These links connect this page to the next useful checks and decisions without repeating the full content.
Connect symptoms to the enclosureStart from condensation, staining, odours or movement before choosing a repair.Open →Adapt the enclosure to climateConnect heat, cold, water, wind and wildfire to building priorities.Open →Assess overall resilienceReview water, climate, safety, autonomy and records with a local score.Open →Screen hazardous materialsIdentify situations where work should stop and testing is needed before disturbance.Open →Open climate guidanceReview climate constraints relevant to assemblies and materials.Open →
Tools related to this issue
Explore: Systems to check before closing the work
Systems to check before closing the work
This section connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
Explore: Advanced diagnostics to cross-check
Advanced diagnostics to cross-check
This section connects water, soil, climate, safety, materials and seasonal use to existing projects.
Explore: Specialized systems to cross-check
Specialized systems to cross-check
This section completes gas, soil, water, fire, climate and structural interfaces.
Explore: Specialized diagnostics to verify
Specialized diagnostics to verify
This section connects systems that become costly or regulated when a primary project triggers them.
Explore: Edge systems to integrate into the project
Edge systems to integrate into the project
This section covers interfaces that become important when multiple home systems interact.
Explore: Often-overlooked service interfaces
Often-overlooked service interfaces
This section connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.
Explore: Project risks and overlooked interfaces
Project risks and overlooked interfaces
This section connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.
Explore: Finish and service details to verify
Finish and service details to verify
This section connects small details that become costly once finishes are closed.
Explore: Shared, access and specialized interfaces
Shared, access and specialized interfaces
This section connects projects where multiple systems, owners or rules meet.
Explore: Post-disaster and legacy systems
Post-disaster and legacy systems
This section connects contamination, storm damage, legacy materials and recommissioning before rebuilding.
Explore: V47 interfaces not to miss
V47 interfaces not to miss
These details are small on a drawing but can control water, structure or durability.