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‘Structural Insulated Panels’. are they the sustainable solution to standard light framed load-bearing construction in New Zealand ?. www.portersips.com/STRUCTURAL/SIPS_house12b.jpg. Structural Insulated Panel Systems (SIPs) . http://www.precisionpanel.com. Construction.

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structural insulated panels

‘Structural Insulated Panels’

are they the sustainable solution to standard light framed load-bearing construction in New Zealand ?

www.portersips.com/STRUCTURAL/SIPS_house12b.jpg

construction

http://www.precisionpanel.com

Construction

The panels are slotted together to form the structureof the building

– without framing

structurally insulated panel systems sips
Structurally Insulated Panel Systems (SIPs)

Can be used as:

  • Walls
  • Floors
  • Roofs
  • Interior walls
  • Additions to other construction systems

Kingspan

claims for sips by manufacturers and suppliers are similar
Claims for SIPs by manufacturers and suppliers are similar
  • Energy efficient
  • Renewable
  • Waste efficient
  • Healthy

www.greenlibdems.org.uk

standard for measuring sustainable building
Standard for measuring sustainable building
  • Sustainable site planning
  • Safeguard water and water efficiency
  • Energy efficiency and renewable energy
  • Conservation of materials and resources
  • Material toxicity and emissions
  • Waste reduction
  • Indoor environmental air quality
standard for measuring sustainable building1
Standard for measuring sustainable building
  • Sustainable site planning
  • Safeguard water and water efficiency
  • Energy efficiency and renewable energy
  • Conservation of materials and resources
  • Material toxicity and emissions
  • Waste reduction
  • Indoor environmental air quality
claims for sips by manufacturers and suppliers are similar1
Energy efficient

Renewable

Waste efficient

Healthy

Energy efficiency and renewable energy

Conservation of materials and resources

Waste reduction

Material toxicity and emissions

Indoor environmental air quality

Claims for SIPs by manufacturers and suppliers are similar
research question
Research Question

Are SIPs the sustainable solution to standard light framed load-bearing construction in New Zealand?

new zealand light timber frame house construction
New Zealand light timber frame house construction
  • 90% of all new houses in NZ
  • From softwood plantation timber
  • Framing comprises 15-25% of the wall
  • Treated with CCA
  • Manufactured from 60% of the tree
  • Large amount of waste generated
  • Requires insulation
  • Subject to settlement creating draughts

www.woodengineering.com

structural insulated panels systems sips
Structural Insulated Panels systems (SIPs)
  • From fast growth plantation timbers
  • Foam insulation from petroleum industry
  • Comprises all of the wall excluding exterior cladding
  • Timber panel and plastic foam are both chemically treated.
  • Engineered wood panels use of 90% of the tree
  • Very little waste generated
  • Excellent insulation and air tightness capabilities

files.servicemagic.com

energy efficient
Energy efficient

Whole Wall Thermal Resistance of SIPsCompared to Light Timber Framing

3

2.5

2

SIP

Light timber

1.5

1

0.5

0

Whole wall r-value (K-m2/W)

renewable
Timber is plantation growth – renewable

Insulation can be renewable material

Timber is plantation growth

Insulation is recyclable but not renewable

Renewable

www.goodfellowinc.com

www.greenbuilders.com

waste efficient
Waste efficient
  • Construction waste makes up 50 % of all landfill content, 38% is timber and wood fibre
  • SIPs generate less waste
    • in primary processing stages
    • in secondary processing stages
    • in construction phase
healthy
Healthy
  • Manufacturing health risks with both processes
  • Construction health risks are reduced with SIPs
  • SIPs construction is more air tight
  • SIPs have greater thermal resistance
  • Humidity control is easier with SIPs
are sips the sustainable construction solution in nz
Timber surplus

Limited petrochemical industry

Skilled labour shortages Relatively low cost of labour

Inefficient transport network

Timber shortage

Petrochemical industry

Skilled labour shortages

High cost of labour

Efficient land transport network

Demand for reduced construction period

Are SIPs the sustainable construction solution in NZ?
conclusion
Conclusion

SIPs are not currently the sustainable solution to standard light framed load-bearing construction in New Zealand

however
However…..

www.niksula.hut.fi/~haa/kobe/earthq3.jpg

blog.lewrockwell.com

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