Construction Methodology

All about construction, in simple words.

Common insulation materials

Type R-Value/25mm Density (kg/m³) Common Forms Applications Cost/m²
BULK INSULATION
Glass Wool 0.6-0.7 10-28 Batts, Rolls Walls, Ceiling $
Rock Wool 0.7-0.8 30-100 Batts, Boards Fire-rated, Acoustic $$
Polyester 0.5-0.6 8-20 Batts, Rolls Allergy-friendly $$
RIGID BOARDS
EPS 0.6-0.7 15-30 Boards Walls, Floors $$
XPS 0.7-0.8 30-40 Boards Under-slab, Walls $$$
PIR/PUR 1.0-1.2 30-40 Boards High-performance $$$$
REFLECTIVE
Foil N/A N/A Sheets Roofs, Walls $
Multi-layer N/A N/A Blankets Roofs, Walls $$
SPECIALTY
Aerogel 2.0-2.5 70-150 Blankets High-tech, Thin $$$$$
Vacuum Panels 5.0-6.0 150-200 Panels Ultra-high performance $$$$$

Typical R-Values (Total):

  1. Ceiling/Roof:
  • Cold climate: R5.0-R6.0
  • Temperate: R4.0-R5.0
  • Hot climate: R3.0-R4.0
  1. Walls:
  • Cold climate: R2.5-R3.0
  • Temperate: R2.0-R2.5
  • Hot climate: R1.5-R2.0
  1. Floors:
  • Suspended: R2.0-R2.5
  • Slab edge: R1.0-R2.0

Key Properties:

Fire Performance:

  • Non-combustible: Rock Wool, Glass Wool
  • Combustible: EPS, XPS, Polyester
  • Fire-retardant available: Most types

Moisture Resistance:

  • Excellent: XPS, PIR
  • Good: Rock Wool
  • Poor: Glass Wool (unless treated)

Acoustic Properties:

  • Excellent: Rock Wool
  • Good: Glass Wool, Polyester
  • Poor: Rigid Foam Boards

Installation Considerations:

  1. Ease of Installation:
  • DIY-friendly: Batts, Rolls
  • Professional: Rigid Boards
  • Specialized: Vacuum Panels
  1. Space Requirements:
  • Minimal: Aerogel, Vacuum Panels
  • Standard: Batts, Boards
  • Variable: Reflective

Cost Guide:
$ = Basic ($10-20/m²)
$$ = Standard ($20-40/m²)
$$$ = Premium ($40-60/m²)
$$$$ = Luxury ($60-100/m²)
$$$$$ = Ultra Premium ($100+/m²)

Environmental Impact:

  • Recycled content
  • VOC emissions
  • Ozone depletion potential
  • Global warming potential

Health & Safety:

  • PPE requirements
  • Dust levels
  • Skin irritation
  • Respiratory protection

Note:

  • R-values vary by product
  • Installation quality crucial
  • Local codes apply
  • Climate zones affect choice
  • Condensation risk assessment needed
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