Topic 2 - Property Defects Flashcards
(32 cards)
What are the first signs of damp?
Dark patches, bubbling on surface and an odour
What is rising damp?
Moisture rising up from the ground through capillary action
What are the symptoms of rising damp?
Crumbling or stained plaster, peeling paint or wallpaper, decaying skirting boards and floorboards
How do you treat rising damp?
Identify source of water
New membrane or damp course
What is damp-proof course?
Water repellent materials injected into affected areas to increase density
What is penetrating damp?
Moisture present in fabric of building that has come from somewhere other than the ground such as defective guttering, leaking roof, cracked rendering or poor pointing
How do you treat penetrating damp?
Apply a weatherproof coating
When does condensation occur?
When there is a high level of humidity within the property
Sub-floor ventilation?
Ground floor of property has floorboards with a void beneath them there must be sufficient ventilation to avoid timber becoming damp or decaying.
Instal vents in walls.
Careful not to obstruct such as a shed wth concrete base or extension.
What is dry rot?
Decay to timbers caused by fungus
Is dry rot usual in modern properties?
No. Building regs state timbers must be kiln dried
How do you treat dry rot?
Replace timber
What is wet rot?
Decaying timber due to high levels of moisture
Wha causes wet rot?
Structural defects such as leak of damaged membrane
How do you prevent wet rot?
Ensure all timbers are adequately painted and treated with a waterproof timber preservative
Are chimney stacks vulnerable to movement?
Yes
What are the issues when chimney breasts are no longer used?
Moisture can build up and penetrate through internal wall causing staining
If any part of a chimney has been removed, what does a surveyor check for?
He will check to see that chimneys above have been removed and are properly supported
What is tree subsidence?
When the tree roots suck the moisture from soils such as X
What is woodworm?
When beetles bore in to timbers eating through causing damage.
What are termites?
White ants that eat away at timbers.
What are the five building regulations stages for loft conversions?
Structural stability - new ceiling joists must be in place to carry the weight of the room.
Fire safety - must be fitted with a self-closing fire resistant for 30 minute door.
What is subsidence?
Where to ground beneath the property drops unevenly.
What is heave?
Where underground forces cause the ground beneath the property to rise unevenly.