1. Basement Moisture Conditions, Their Cause and Associated Damages are Creating Unfavorable Conditions for Living Spaces. Improvement in Building Envelope Requirements has Demanded Better Systems of Protection for Below Grade Construction.
We will take a look at these Conditions, and some Advanced Materials that have Improved The Building Envelope Construction over Traditional Materials and Methods.
DEW TECHNOLOGY CENTRE- 2010

2. Moisture 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

3. Let’s take a look at these Five Major Causes of Moisture Entry into Basements
Capillary Action
Concrete Capillaries
Capillary Development
Minimal Wall Protection
Water Pocket
Water Intrusion
Capillaries
Foundation Wall
DEW TECHNOLOGY CENTRE- 2010

4. Let’s take a look at how these Five Major Causes Affect Your Basements
Capillary Action
Minimal Wall Protection
Insulation/Vapor Barrier
Saturated Wall Assembly
Water Pocket
Mold & Mildew
Dampness on Floor
Moisture infiltration results in – Unhealthy Air + Dampness + Wall Assembly Damage
DEW TECHNOLOGY CENTRE- 2010

5. Let’s take a look at these Five Major Causes of Moisture Entry into Basements
Vapor Transmission
Minimal Wall Protection
45% RH
Water
65% RH
Vapor
RH = Relative Humidity
55% RH
Water Vapor
DEW TECHNOLOGY CENTRE- 2010

6. Let’s Review some Major Reasons for Defects in Foundation Walls
Foundation/Soil Settlement
Concrete Shrinkage
Improper Grading
Below Grade Services
Construction Joints
DEW TECHNOLOGY CENTRE- 2010

7. Traditional Materials and Application Methods to Waterproof Foundations as a Stand Alone Protection System are being Replaced or Complemented by Newer more Reliable Materials and Systems.
Building Codes are taking notice of their Success and Endorses Their Use with Recognition of Third Party Product Testing, Assessments and Approvals. This Presentation will look at Two of the More Popular Systems being used in Construction Today.
DEW TECHNOLOGY CENTRE- 2010

8. Advantages of Using Plastic Dimple Sheet & Geocomposite Drainage Products to Control Ground Moisture Migration, and Water Damage with the Potential to Reduce or Eliminate the formation of Mould and Mildew in Basements.
DEW TECHNOLOGY CENTRE- 2010

9. How can Dimple Sheet Waterproofing Protect you from Water Damage
Concrete Foundation Wall Cracks
Dimple Sheet
Structural Crack
Water
Pocket
Basement
Interior
Water
Pocket
Crack
Dimple Sheet bridges cracks in foundation walls to continue protecting your home and family even after a crack develops.
DEW TECHNOLOGY CENTRE- 2010

10. How can Dimple Sheet Waterproofing Protect you from Water Damage
Capillary Break (Stop)
Dimple Sheet
Dimple Sheet
Capillary Break
Water
Pocket
Basement
Interior
Water
Pocket
Foundation
DEW TECHNOLOGY CENTRE- 2010

11. How can Dimple Sheet Waterproofing Protect you from Water Damage
Vapor Transmission
RH = Relative Humidity
Dimple Sheet
Dimple Sheet Vapor Retarder
Interior
45% RH
Water
65% RH
Vapor
Dimple Sheet for
Under Slab
Water
Vapor
Water Vapor
Foundation
DEW TECHNOLOGY CENTRE- 2010

12. How can Dimple Sheet Waterproofing Protect you from Water Damage
Condensation
DEW Point
DEW Point
Dimple Sheet
Air Gap
Dimple Sheet
Interior
Temperature
68° F
Soil
Temperature
37° F
Soil
Temp.
37° F
Air Gap assists to reduce interior condensation on foundation walls by creating moderated air flow between Dimple Sheet and foundation wall
Foundation
Moderated Air

13. Technologically Advanced Drainage Solutions over Traditional Drainage Systems
Don’t Let Ground Water and Hydrostatic Pressure Stop You From Enjoying Your Home
DEW TECHNOLOGY CENTRE- 2010

14. Conditions When You Should Consider Using Composite 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

15. Hydrostatic Pressure – What Affects it has on Your Foundation
Wall
Hydrostatic
Pressure
Hydrostatic
Pressure
Wall
Crack
Foundation
Wall
Basement Floor
Hydrostatic
Pressure
Wall Deflection
Lateral Stresses
Stress Cracks and
Floor Slab Uplift
DEW TECHNOLOGY CENTRE- 2010

16. Let’s see why Hydrostatic Pressure is a Cause of Moisture Entry into Basements
Hydrostatic Pressure – Ground Water
Foundation Wall
Minimal Wall Protection
Hydrostatic Pressure
Water Pocket
Basement
Interior
Pressure
Concrete Capillaries
DEW TECHNOLOGY CENTRE- 2010
The best way to deal with Hydrostatic Pressure is to “Redirect the Ground Water” to an outlet

17. Let’s take a look at how Hydrostatic Pressure Affects Your Basement
Hydrostatic Pressure – Ground Water
Minimal Wall Protection
Insulation/Vapor Barrier
Saturated Wall Assembly
Surface Finish Damaged
Water
Pocket
Pressure
Basement Flood
Hydrostatic Pressure can cause – Basement Flooding + Structural Damage + Property Damage
DEW TECHNOLOGY CENTRE- 2010

18. How can Technologically Advanced Drain Products Protect your foundation from Water Damage
Hydrostatic Pressure – Ground Water
Waterproofing
Geocomposite Drain Board
Drainage Core
Fabric
Basement
Interior
Water
Pocket
Water
Pocket
Foundation
DEW TECHNOLOGY CENTRE- 2010

19. Additional Uses for Geocomposite Drainage Products
DEW TECHNOLOGY CENTRE- 2010