Basement Moisture Conditions, Their Basement Moisture Conditions, Their Cause and Associated Damages are Cause and Associated Damages are Creating Unfavorable Conditions for Creating Unfavorable Conditions for Living Spaces. Improvement in Building Living Spaces. Improvement in Building Envelope Requirements has Demanded Envelope Requirements has Demanded Better Systems of Protection for Below Better Systems of Protection for Below Grade Construction. Grade Construction. We will take a look at these Conditions, We will take a look at these Conditions, and some Advanced Materials that have and some Advanced Materials that have Improved The Building Envelope Improved The Building Envelope Construction over Traditional Materials Construction over Traditional Materials and Methods. and Methods. DEW TECHNOLOGY CENTRE- 2010
Transcript
Basement Moisture Conditions, Their Cause and Basement Moisture Conditions, Their Cause and Associated Damages are Creating Unfavorable Conditions Associated Damages are Creating Unfavorable Conditions
for Living Spaces. Improvement in Building Envelope for Living Spaces. Improvement in Building Envelope Requirements has Demanded Better Systems of Protection Requirements has Demanded Better Systems of Protection
for Below Grade Construction. for Below Grade Construction.
We will take a look at these Conditions, and some We will take a look at these Conditions, and some Advanced Materials that have Improved The Building Advanced Materials that have Improved The Building Envelope Construction over Traditional Materials and Envelope Construction over Traditional Materials and
Methods.Methods.
DEW TECHNOLOGY CENTRE- 2010
Moisture Problems – Major Causes of Below Grade Moisture EntryMoisture Problems – Major Causes of Below Grade Moisture Entry
Concrete cracks - Cracks in a foundation walls of concrete or masonry compromises the structures ability to provide a barrier to water/moisture entry. Causes of cracks are settlement, expansive soils, frost, shrinkage due to natural process of concrete curing.
Hydrostatic Pressure – Ground water pressure build up that exerts lateral and vertical pressures on the foundation structure
Capillary Action – The movement of liquid moisture through a structure or substrate (concrete) using voids and fissures in the material acting as a path for water travel
Vapor Transmission – The movement of air borne moisture through a structure or substrate due to vapor pressure equalization (high concentration to low concentration)
Condensation – The formation of liquid moisture on or within a structure or substrate due to the airborne moisture concentration and temperature conditions being ideal for water to form
DEW TECHNOLOGY CENTRE- 2010
Let’s take a look at these Five Major Causes of Moisture Entry into BasementsLet’s take a look at these Five Major Causes of Moisture Entry into Basements
Capillary ActionConcrete Capillaries
Water Pocket
Minimal Wall Protection
Water Intrusion
Capillary Development
Foundation Wall
Capillaries
DEW TECHNOLOGY CENTRE- 2010
Water Pocket
Let’s take a look at how these Five Major Causes Affect Your BasementsLet’s take a look at how these Five Major Causes Affect Your Basements
Capillary Action
Insulation/Vapor Barrier
Saturated Wall Assembly
Mold & Mildew
Dampness on Floor
Moisture infiltration results in – Unhealthy Air + Dampness + Wall Assembly Damage
Minimal Wall Protection
DEW TECHNOLOGY CENTRE- 2010
Let’s take a look at these Five Major Causes of Moisture Entry into BasementsLet’s take a look at these Five Major Causes of Moisture Entry into Basements
Vapor Transmission
65% RH45% RH
RH = Relative Humidity
Water
Vapor
55% RHWater Vapor
Minimal Wall Protection
DEW TECHNOLOGY CENTRE- 2010
Let’s Review some Major Reasons for Defects in Foundation WallsLet’s Review some Major Reasons for Defects in Foundation Walls
Foundation/Soil Settlement Concrete Shrinkage
Construction JointsBelow Grade Services
Improper Grading
DEW TECHNOLOGY CENTRE- 2010
Traditional Materials and Application Methods to Traditional Materials and Application Methods to Waterproof Foundations as a Stand Alone Protection Waterproof Foundations as a Stand Alone Protection
System are being Replaced or Complemented by Newer System are being Replaced or Complemented by Newer more Reliable Materials and Systems. more Reliable Materials and Systems.
Building Codes are taking notice of their Success and Building Codes are taking notice of their Success and Endorses Their Use with Recognition of Third Party Endorses Their Use with Recognition of Third Party Product Testing, Assessments and Approvals. This Product Testing, Assessments and Approvals. This
Presentation will look at Two of the More Popular Systems Presentation will look at Two of the More Popular Systems being used in Construction Today. being used in Construction Today.
DEW TECHNOLOGY CENTRE- 2010
Advantages of Using Plastic Dimple Sheet & Geocomposite Advantages of Using Plastic Dimple Sheet & Geocomposite Drainage Products to Control Ground Moisture Migration, and Drainage Products to Control Ground Moisture Migration, and Water Damage with the Potential to Reduce or Eliminate the Water Damage with the Potential to Reduce or Eliminate the
formation of Mould and Mildew in Basements.formation of Mould and Mildew in Basements.
DEW TECHNOLOGY CENTRE- 2010
How can Dimple Sheet Waterproofing Protect you from Water DamageHow can Dimple Sheet Waterproofing Protect you from Water Damage
Concrete Foundation Wall Cracks
Basement
Interior
Water
Pocket
Water
Pocket
Dimple Sheet bridges cracks in foundation walls to continue protecting your home and family even after a crack develops.
Structural Crack
Crack
Dimple Sheet
DEW TECHNOLOGY CENTRE- 2010
How can Dimple Sheet Waterproofing Protect you from Water DamageHow can Dimple Sheet Waterproofing Protect you from Water Damage
Water Pocket
Dimple Sheet
Capillary Break (Stop)
Water
Pocket
Dimple SheetCapillary Break
Foundation
Basement
Interior
DEW TECHNOLOGY CENTRE- 2010
Water
65% RH
Vapor
How can Dimple Sheet Waterproofing Protect you from Water DamageHow can Dimple Sheet Waterproofing Protect you from Water Damage
Dimple Sheet
Vapor Transmission
Water
Vapor
Dimple Sheet for
Under Slab
Water Vapor
Dimple Sheet Vapor Retarder
Foundation
45% RH
RH = Relative Humidity
Interior
DEW TECHNOLOGY CENTRE- 2010
Soil
Temperature
37° F Soil
Temp.
37° F
Interior
Temperature
68° F
DEW PointDEW Point
How can Dimple Sheet Waterproofing Protect you from Water DamageHow can Dimple Sheet Waterproofing Protect you from Water DamageCondensation
Air Gap
Dimple Sheet
Foundation
Air Gap assists to reduce interior condensation on foundation walls by creating moderated air flow between Dimple Sheet and foundation wall
Moderated Air
Dimple Sheet
Technologically Advanced Drainage Solutions over Traditional Drainage SystemsTechnologically Advanced Drainage Solutions over Traditional Drainage Systems
Don’t Let Ground Water and Hydrostatic Pressure Stop You From Enjoying Your HomeDon’t Let Ground Water and Hydrostatic Pressure Stop You From Enjoying Your Home
DEW TECHNOLOGY CENTRE- 2010
Conditions When You Should Consider Using Conditions When You Should Consider Using Composite DrainsComposite Drains
Hill Side Construction
High Ground Water Table (with mechanical pumping system)
Perched Water Table
Poor Draining Soils (Clay & Silt)
Building in Flood Plain areas (with mechanical pumping system)
Building near steep up sloped lands
DEW TECHNOLOGY CENTRE- 2010
Hydrostatic Pressure – What Affects it has on Your FoundationHydrostatic Pressure – What Affects it has on Your Foundation
Wall Deflection
Lateral Stresses
Stress Cracks and
Floor Slab Uplift
Hydrostatic
Pressure
Hydrostatic
Pressure
Hydrostatic
Pressure
Wall
Crack
Basement Floor
Foundation
Wall
Foundation
Wall
DEW TECHNOLOGY CENTRE- 2010
Let’s see why Hydrostatic Pressure is a Cause of Moisture Entry into BasementsLet’s see why Hydrostatic Pressure is a Cause of Moisture Entry into Basements
Water Pocket
Hydrostatic Pressure – Ground Water
Concrete Capillaries
Hydrostatic Pressure
Pressure
Foundation Wall
Basement
Interior
The best way to deal with Hydrostatic Pressure is to “Redirect the Ground Water” to an outlet
Minimal Wall Protection
DEW TECHNOLOGY CENTRE- 2010
Saturated Wall Assembly
Pressure
Basement Flood
Insulation/Vapor Barrier
Surface Finish Damaged
Let’s take a look at how Hydrostatic Pressure Affects Your BasementLet’s take a look at how Hydrostatic Pressure Affects Your Basement
Hydrostatic Pressure – Ground Water
Hydrostatic Pressure can cause – Basement Flooding + Structural Damage + Property Damage
Water
Pocket
Minimal Wall Protection
DEW TECHNOLOGY CENTRE- 2010
Hydrostatic Pressure – Ground Water
How can Technologically Advanced Drain Products Protect your foundation How can Technologically Advanced Drain Products Protect your foundation from Water Damage from Water Damage
Geocomposite Drain Board
Fabric
Drainage CoreWaterproofing
Foundation
Water
PocketWater
Pocket
Basement
Interior
DEW TECHNOLOGY CENTRE- 2010
Additional Uses for Geocomposite Drainage ProductsAdditional Uses for Geocomposite Drainage Products
