ROOF
DESIGN AND
CONSTRUCTION
An Overview of Roof Types,
Materials, and Construction Process
GROUP 05
ALIF - AL - HOSSAIN UTSHO 2231099610
KAZI AL MAHMUZ UN NOBI 2222831610
ROMMON NUR ISLAM 2122442610
Introduction
Roofs are an essential part of any building, providing protection,
insulation, and aesthetics. A well-designed roof enhances the
durability and efficiency of a structure.
What is Roof Design & Construction?
The process of designing and building durable, safe, and functional roofs.
Why is it Important?
Protects from weather Strengthens buildings Improves energy
(rain, wind, snow, heat) and ensures safety efficiency & sustainability
Types of Roofs (Based on Shape)
Gable Roof Hip Roof
Flat Roof Shed Roof
Manshard Roof Butterfly Roof
Types of Roofs (Based on Material)
Traditional Materials Wood Thatch
Wood – Aesthetic & natural but requires maintenance.
Thatch – Eco-friendly, good insulation, but fire-prone.
Clay Tiles – Durable, fire-resistant, but heavy.
Modern Materials
Clay Tiles Metal Sheets
Metal Sheets – Lightweight, durable, and weather-resistant.
Asphalt Shingles – Affordable, easy to install, but less durable.
Concrete – Strong, long-lasting, but heavy.
Asphalt Shingles Concrete
Roof Design Considerations
Energy Efficiency & Insulation Aesthetic & Architectural Style
Reflective Materials Building Design
Proper Insulation Property Value
Climate & Weather Conditions Building Structure & Load Capacity
Rain, Snow, Wind, Heat Live Loads
Roof Design
Drainage & Waterproofing Dead Loads
Considerations
Material Selection Roof Slope & Drainage
Durability Steeper Slopes
Cost Flat Roofs
Roof Construction Process
Roof Load & Structural Considerations
Dead Load vs. Live Load
Dead Load – Permanent weight of the roof (materials, insulation, fixtures).
Live Load – Temporary forces (snow, maintenance workers, equipment).
Wind & Snow Load Considerations
Wind Load – Roofs must resist uplift forces in high-wind areas.
Snow Load – Roof design must support the weight of accumulated snow.
Seismic Considerations
Roofs in earthquake-prone areas must be lightweight and flexible.
Proper bracing and connections prevent structural failure.
Flat Roof Construction
Roof Construction Process
Steel Reinforcement Concrete Pouring Waterproofing Surface Finishing
Roof Construction Section
Roof Insulation & Ventilation
Importance of Insulation for Energy Efficiency
Reduces heat loss in winter & heat gain in summer
Lowers energy costs & improves indoor comfort
Prevents moisture buildup & mold formation
Common Insulation Materials
Fiberglass – Affordable, fire-resistant, easy to install
Foam Board – High insulating value, moisture-resistant
Spray Foam – Best for air-sealing, but more expensive
Ventilation Methods
Ridge Vents – Placed at roof peaks to allow hot air to escape
Gable Vents – Installed on walls to improve cross-ventilation
Turbine Vents – Uses wind power to pull hot air out
Common Roofing Problems & Maintenance
Cracks & Weathering Leaks & Water Damage Poor Ventilation
Regular inspections mitigate Address leaks to prevent mold Improve ventilation to
cracks and weathering and structural damage. reduce moisture and energy
issues. costs.
Conclusion
THANK YOU
