Principles of Weather & Water Tightness
Completion requirements
Spend at least 5 Ngā Mīniti on this activity
Go through the activity to the end
This lesson looks at the principles related to the construction of a building. This is broader than the plumbing context alone but is relevant when building penetrations and flashing work is being undertaken. It also covers the principles of capillary attraction and sealants.
Introduction
In this lesson we look at two concepts:
Weather tightness
Meaning: Being secure against wind, rain, etc.
Water tightness
Meaning: Being constructed or fitted so tightly as to be impervious to water
Most issues with weather-tightness and water-tightness aren’t obvious. However, if water is dripping or pooling when it rains or when water services are being used, you are likely to have a leak.
You can also look out for:
- sagging of ceiling linings
- corrosion of fixings such as screws and nails
- uneven floor surfaces, like the lifting of vinyl
- mould or fungi formation on surfaces (although this is often due to poor ventilation)
- musty smells
- swollen materials such as skirtings and architraves
- staining or discolouration of materials or surfaces
- stained or rotting carpet, or rusting of carpet fixings.