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Waterproof ing System Roof Garden

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Page 1: Waterproofing System Waterproofing System Roof Garden

WaterproofingSystem

WaterproofingSystem

Roof GardenRoof Garden

Page 2: Waterproofing System Waterproofing System Roof Garden

•Reduces urban heat island effects

•Storm water runoff management

•Adds valuable/useable space providing economic benefits

•Energy efficiency year-round

•Could earn LEED points

•Reduces urban heat island effects

•Storm water runoff management

•Adds valuable/useable space providing economic benefits

•Energy efficiency year-round

•Could earn LEED points

Roof Garden – Today’s Advantages

Roof Garden – Today’s Advantages

Page 3: Waterproofing System Waterproofing System Roof Garden

Roof GardensRoof GardensKaiser ResourcesVancouver, BC

After

Kaiser ResourcesVancouver, BC

After

BeforeBefore

Create high value, usable space

Create high value, usable space

Page 4: Waterproofing System Waterproofing System Roof Garden

Rockefeller Center – 1933

Rockefeller Center – 1933

Roof GardensRoof Gardens

Enhances view from neighboring buildingsEnhances view from

neighboring buildings

Page 5: Waterproofing System Waterproofing System Roof Garden

• Select highly puncture resistant membrane

• Establish redundancy – Splice overlayment

• Provide positive drainage at membrane level

• Select highly puncture resistant membrane

• Establish redundancy – Splice overlayment

• Provide positive drainage at membrane level

Roof Garden - Design PrinciplesRoof Garden - Design PrinciplesFor Effective Waterproofing Systems:For Effective Waterproofing Systems:

Page 6: Waterproofing System Waterproofing System Roof Garden

• Ensure proper system protection

• Incorporate drainage layer/root barrier

• Utilize Moisture Retention Mat (where applicable)

• Ensure proper system protection

• Incorporate drainage layer/root barrier

• Utilize Moisture Retention Mat (where applicable)

Roof Garden - Design Principles

Roof Garden - Design Principles

Page 7: Waterproofing System Waterproofing System Roof Garden

• Ultra-Extensive/Shallow – < 4”

deep

• Extensive/Medium – 4” - 8”

deep

• Intensive/Deep – > 8” deep

• Ultra-Extensive/Shallow – < 4”

deep

• Extensive/Medium – 4” - 8”

deep

• Intensive/Deep – > 8” deep

Roof Garden Assembly TypesRoof Garden Assembly Types

Page 8: Waterproofing System Waterproofing System Roof Garden

Shallow AssemblyShallow Assembly

Growth Media

Moisture Retention Mat

Drainage Board

Protection Fabric

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Substrate

Growth Media

Moisture Retention Mat

Drainage Board

Protection Fabric

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Substrate

Page 9: Waterproofing System Waterproofing System Roof Garden

Ultra-Extensive/Shallow Assembly

Ultra-Extensive/Shallow AssemblyGrowth Media – “Sedum”Growth Media – “Sedum”

Page 10: Waterproofing System Waterproofing System Roof Garden

Ultra-Extensive/Shallow Assembly

Ultra-Extensive/Shallow Assembly

Page 11: Waterproofing System Waterproofing System Roof Garden

Medium Assembly Growth Media

Moisture Retention Mat

Drainage Board

Root Barrier

Protection Fabric

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Substrate

Growth Media

Moisture Retention Mat

Drainage Board

Root Barrier

Protection Fabric

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Substrate

Page 12: Waterproofing System Waterproofing System Roof Garden

Roof Garden – Medium Assembly

Roof Garden – Medium Assembly

Page 13: Waterproofing System Waterproofing System Roof Garden

Deep Assembly Growth Media

Protection Fabric

Drainage Gravel

Protection Fabric

Root Barrier

Extruded Polystyrene

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Growth Media

Protection Fabric

Drainage Gravel

Protection Fabric

Root Barrier

Extruded Polystyrene

Membrane ( Adhered )

Dens-Deck

Approved Insulation

Page 14: Waterproofing System Waterproofing System Roof Garden

Intensive Assembly/DeepIntensive Assembly/Deep

Page 15: Waterproofing System Waterproofing System Roof Garden

Protection/Drainage Components

Protection/Drainage Components

• Protection Fabric

• Drainage Boards

• Moisture Retention Mat

• Extruded Polystyrene Insulation

• Root Barrier

• Protection Fabric

• Drainage Boards

• Moisture Retention Mat

• Extruded Polystyrene Insulation

• Root Barrier

In addition to the waterproofing material, other components must be utilized to ensure proper function:

In addition to the waterproofing material, other components must be utilized to ensure proper function:

Page 16: Waterproofing System Waterproofing System Roof Garden

Planting MediaPlanting MediaPlanting media should meet the following

criteria:

• Not include silt that can clog drainage fabric

• Provide permanent aeration

• Provide adequate drainage

• Supply or absorb water and nutrients

• Retain its original volume

Planting media should meet the following criteria:

• Not include silt that can clog drainage fabric

• Provide permanent aeration

• Provide adequate drainage

• Supply or absorb water and nutrients

• Retain its original volume

Page 17: Waterproofing System Waterproofing System Roof Garden

Planting MediaPlanting MediaPlanting Media Mix:

• A mix suitable for most roof garden applications should be similar in content and percentage or composed of

– 45% graded sand ( with no fines )

– 45% expanded shale

– 10% humus ( pine bark )

Planting Media Mix:

• A mix suitable for most roof garden applications should be similar in content and percentage or composed of

– 45% graded sand ( with no fines )

– 45% expanded shale

– 10% humus ( pine bark )

Page 18: Waterproofing System Waterproofing System Roof Garden

Weights of Plant Medialbs/ft3

Weights of Plant Medialbs/ft3

MaterialMaterial DryDry DampDamp

Fine sandFine sand 9090 120120

Cedar shavings with Cedar shavings with Fertilizer Fertilizer

9.259.25 1313

Peat mossPeat moss 9.69.6 10.310.3

Redwood compost and Redwood compost and shavingshaving

14.814.8 22.222.2

Fir and pine bark humusFir and pine bark humus 22.222.2 33.333.3

PerlitePerlite 6.56.5 32.432.4

Page 19: Waterproofing System Waterproofing System Roof Garden

WaterproofingSystem

WaterproofingSystem

Roof GardenRoof Garden