Introduction Flashcards
Do standards expect you to get up on the roof
No . But you have to write up the limitations of not being able to do so ie inaccessible flat roof
How should we describe metal roof
Better to describe as METAL instead of making a mistake between galvanized steel, terneplate,lead, zinc or copper
Which are single ply roofs
EPDM
PVC
ROll roofing
MODBIT
Do standards say that you have to describe roof accessories ie solar systems, antennas and lightening arresters?
No , but you have to look at the points of penetrations ie for solar panels you have to look and mention the limitations as these they cover a portion of the roof and prevent observations
Is flat roofing a shedding system
No. Flat roofing is a watertight skin
Do flat roofing’s have slopes
Yes They are low sloped in order to drain the water thru gutters,downspouts ,scuppers
What are scuppers
Drainage openings through walls including parapet walls
Is it safe to tar a flat roof
No. Tarred roofs on asphalt( mod bit and built up ) can start a fire while being applied
What are tar and gravel roofs
Built up roofing systems made up of felt paper and tar/asphalt,
What is the life of BUR
20 years
Is BUR easy to inspect
No because the top gravel covers the felt
What is the life of roll roofing
5-10 years
Give examples of single ply roofs
Pvc,
Synthetic rubber ( epdm or elastomeric)
Chemically altered asphalt roofs ie modified bitumens
What are the problems in pvc roofs
Cracking
What are problems in epdm roofs
Open at the seems and pull flashings as they shrink
