Roofing System

Question 1

Types of Roof System

Answer 1

1. Low Mass Roofing System
2. High Mass Roofing System

Question 2

High mass roof system include:

Answer 2

1. Earth-Covered Construction
2. Green Roofing

Question 3

Low mass roofing system include:

Answer 3

Tile Roofing
Metal Sheet Roofing
Structural Insulated Panel Roofing (SIP)

Question 4

• provides sufficient thermal lag to moderate season cycles
• require no maintenence to the roof and very durable
• have high site disturbance during construction but minimal on completion
• have high embodied energy and high cost
  -eliminates roof area so any rainwater collection is limited to out-buildings.

Answer 4

Earth-Covered Construction

Question 5

• uses a lightweight manufactured materials as a medium to grow plants
• thermal mass is generally inaccessible due to thr structure, and insulation is medium to high and provided by conventional insulation rather than the covering.
• have medium to high embodied energy, depending on support structures.
• environment benefits include food production, inccreased ecological habitat and biodoversity, reduction of heat island over built-up areas, air quality improvment and on-site stormwater detention.
• low to medium maintenance

Answer 5

Green roofs

Question 6

This have slightly lower energy than teracotta. They require more structural support than lightweight materials and can add to heat gain h less well insulated, because they are external, uninsulated mass.

Answer 6

Tile Roofing

Question 7

This has high embodied energy per kilogram, but because it is thin, the embodied energy is low per sqm.

Answer 7

Metal sheeting

Question 8

These typically are made with 2 skins of pre-coated thin steel 0.42mm thick for the profile rolled for added rigidity. They are an efficient use of the embodied energy in steel as they have high insulation values.

Answer 8

Structural Insulated Panel (SIP)