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From Roman floors to basements in Venice, a look at all floor types from suspended to solid and how they fail. Includes an in-depth look at the best way to keep basements dry, with an emphasis on managing damp, rather than ‘curing’ it.
DVD Topics:
1. The floors of the roman empire
 A visit to Hadrian’s wall to look at solid and suspended Roman floors
2. Blocking the flow 1
Timber suspended floor problems – importance of ventilation
Blocked vents – example of extreme dry rot fungus
3. Blocking the flow 2
Under-floor rubble
Vapour transmission
4. Lateral penetration
Problems when moisture from high ground levels enters the floor
5. Under pressure
Underfloor leaks
6. The hearth of the problem
Hearth slabs – no DPC
Water leaks against hearth appearing as rising damp
7. Battens and boards
Underfloor leaks
8. Solid suspended floors
Carbonation of concrete
9. Hong Kong restoration
Two case studies from Hong Kong of concrete carbonation and a raised solid floor
10. Measuring damp in solid floors
Using a hydrostick in a humidity box
Importance of equilibrium relative humidity
11. When is a floor a roof?
Case study of a floor slab which became an exterior walkway over a basement
12. Solid floors - Case 1
Failure of floor slab leading to condensation
13. Solid floors – Case 2
New concrete floor suffers from high ground levels
Fundamental problems with fitting concrete floors
Replacing solid floors with suspended floors
14. Going underground
Building basements
BS8102 – guidance on water tables
How not to waterproof a basement – case study
15. Management options
Brief overview of options for waterproofing below-ground
Cementitious systems
Ashphaltic systems
Bund walls
Drained cavity wall systems
16. Drained cavity close-up
In-depth look at drained cavity wall systems in action
Interview with Brian Davison – Director, Delta Membrane Systems Ltd.
17. The Crypt of San Marco
Venice - The Crypt of San Marco Basilica
Attempts to preserve basement crypt below water level
Interview with Architect Ettore Vio
Bonus Section
The Psychrometric Chart
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