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 Gardens Kaiser Resources Vancouver, BC After Kaiser Resources Vancouver, BC After Before Create high value, usable space

Rockefeller Center – 1933 Roof Gardens Enhances view from neighboring buildings

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 Principles For Effective Waterproofing Systems:

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

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 Types

Shallow 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

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

Ultra-Extensive/Shallow Assembly

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

Roof Garden – Medium Assembly

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

Intensive Assembly/Deep

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:

Planting Media 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 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

Planting Media 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 ) 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 )

Weights of Plant Media lbs/ft 3 Weights of Plant Media lbs/ft 3 MaterialDryDamp Fine sand Fine sand90120 Cedar shavings with Fertilizer Cedar shavings with Fertilizer Peat moss Peat moss Redwood compost and shaving Redwood compost and shaving Fir and pine bark humus Fir and pine bark humus Perlite Perlite

Waterproofing System Waterproofing System Roof Garden