Roofing Terms Glossary

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We created this glossary (and will continue to update it) to make the process of understanding your roof as easy as possible:

Asphalt Shingles: The most common type of residential roofing material in North America (not as common in Australia. Made from fiberglass matting or organic materials (cellulose) that are saturated with asphalt and coated with mineral granules.

Batten: A strip of wood or other material used to secure and support roofing materials, such as tiles or shingles.

Belly: A low spot or depression in a roof.

Blister: A raised area on a roof caused by trapped air or moisture.

Blind Nail: A nail driven in a concealed location, where only the nail head is visible.

Chimney Flashing: Metal material used to prevent water from penetrating the area where the chimney meets the roof.

Coating: A layer or film spread over a surface for protection or decoration.

Colorbond: A pre-painted steel material used commonly in roofs across Australia.

Counter Flashing: A metal or masonry material installed over the base flashing to provide additional protection against water penetration.

Deck: The structural material, usually made of wood or composite, that serves as the base for the roofing materials.

Dormer: A vertical extension of a roof that projects out from the slope of the main roof and usually contains a window.

Downpipes: Vertical pipes that are installed on the exterior of a building to collect and redirect rainwater from the roof to the ground or a drainage system.

Drip Edge: A metal strip installed along the eaves and rakes of a roof to control the flow of water and prevent it from penetrating under the roofing materials.

Eaves: The lower edge of a roof that projects beyond the side of a building.

Flashing: A thin, waterproof material used to prevent water from penetrating the roof where roofing materials meet roof projections, such as chimneys, skylights, or roof valleys.

Gable: The vertical triangular end of a building between the two sloping sides of a roof.

Gutter: A channel along the edge of a roof that collects and carries rainwater away from the building.

Ice Dam: A ridge of ice that forms along the edge of a roof, causing water to back up and potentially penetrate under the roofing materials.

Insulation: Material that is used to stop heat, sound, or electricity from escaping or entering.

Mansard Roof: A roof with two sloping sides on each of four sides of a building, providing additional living space within the roof.

Parapet: A low wall that is built along the edge of a roof to provide a barrier.

Pitch: The angle of a roof, usually expressed as the rise (height) of the roof for every foot of its run (horizontal distance).

Rebedding: The process of removing and replacing the mortar bedding that supports the ridge caps on a roof.

Repointing: The process of removing and replacing the mortar joints between the ridge caps on a roof. This is performed on top of the mortar bedding.

Ridge: The highest point on a roof, formed by the intersection of two sloping roof sides.

Ridge Cap: The material used to cover and protect the ridge line of a roof, typically made of metal, asphalt, or tile.

Ridge Vent: An exhaust vent installed at the ridge of a roof to provide ventilation and help prevent the buildup of heat and moisture.

Roof Jack: A device used to support roofing material during installation and repair.

Roof Sheathing: The structural material, usually made of wood or composite, that is attached to the roof rafters and serves as the base for the roofing materials.

Roof Valley: The area formed by the intersection of two sloping roof sides, often a source of potential water penetration.

Sarking: An additional layer within a roof that insulates or reflects heat.

Shingle Tab: The exposed portion of an individual asphalt shingle, usually about 5-7 inches wide and 12-18 inches long.

Skylight: A transparent panel installed in a roof to admit natural light into a building.

Soffit: The underside of an eave or overhang on a roof.

Truss: A structural component made up of triangles that provide support for the roof.

Underlayment: A layer of waterproof material, such as asphalt-saturated felt, installed under the roofing materials to provide additional protection against water penetration.

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4.5
Based on 115 reviews
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Marjorie C
Marjorie C
1707270948
Chayce Gillett
Chayce Gillett
1706858596
Professional service at a competitive price.
Sajan Rai
Sajan Rai
1705997458
deoraj subba
deoraj subba
1705964860
Sid Philips
Sid Philips
1705582782
Josh and ellis did great job on my mums roof very pleased.Thanks Bryan
Jim Stoddart
Jim Stoddart
1699436157
They came when they promised (with only one small hitch). Appear to have done a very good job - the on-site team were considerate and professional. BUT the cost was something else. A morning's work for 2 and a half guys without any expensive parts, cost $7900. Seemed like a lot. Hopefully they have fixed the problem.
Duro Bozic
Duro Bozic
1697673890
We had a very good experience with Roof Repairs Perth WA.- Ellis and his crew were professional, polite and friendly. They made a very positive impression. They were quick and efficient, cleaned up after themselves and Ellis communicated very well what they were going to do/doing and what our expectations should be regarding the moss treatment.- we appreciate Josh getting us pushed forward in the schedule when an opening became available. They came in a month ahead of the original appointment and it was greatly appreciated as we had had great difficulty with finding a roofing company to do the required work.- the roof definitely looks in much better shape, getting professionals really does make a difference.
tai-shan daniels
tai-shan daniels
1697176749
Ellis did a great job prompt on time finished it in a timely manner showed me a video of worked carried out very happy with his work and sevice will use them again in 10 years time. Cheers
M W
M W
1693124670
Ellis and Sagan have done a fantastic job replacing the valleys. I can't be happier. Ellis has always communicated well and responded to all queries. Excellent service! Thank you Ellis and Sagan!May
Annette Peake
Annette Peake
1692597922
Great job of repointing, replacing broken tiles & spraying the lichen. Ellis & his co workers were very efficient & a pleasure to have here. I would recommend this company anytime. Thank you. Annette
KELLY TAYLOR
KELLY TAYLOR
1692257034
Vincent and his team were the most professional, friendly and helpful company i had dealt with in such a long time. Top notch workmanship also. Just an all round A+ experience.
Rachel Garner
Rachel Garner
1691995864
Arrived on-time/slightly early, fixed our roof for 8 hours until it was perfect! Thanks folks :)
Jrw
Jrw
1691803302
Happy with the work done and the leak onto the overhang was fixed. Passed the first winter test given the amount of rain Perth had.
Ben Pearcy
Ben Pearcy
1690885385
We had a really positive experience with Roof Repairs Perth. They were great at assessing the issues, gave honest explanations of what was wrong, fixed problems as they arose and communicated everything really well. We'll be referring them to friends and family if anyone else has any issues with their roof for sure. Thanks guys!
Grant Goodfellow
Grant Goodfellow
1690243060
I have had work done to my roof before by Vincent and was extremely happy with the quality of work. We had a issue with another section of roof unrelated to past works.Vincent came out very quickly and provided some very sound advice on a simple and quick solution to fix the issue and gave a very honestappraisal.Cannot recommend highly enough great contractor.
TomRidge93
TomRidge93
1689346439
Zhaolin
Zhaolin
1688027420
These guys have been great! I can’t fault their team at all! Ellis has made the whole process so easy and always there for you when you need. Never delayed on any communications and always responsible for what they did! Fantastic workmanship I ever seen. Can’t recommend them more! Thanks Ellis!Maya
Tim Colwill
Tim Colwill
1685679333
Great service and support from Josh and the team during a persistent roof leak problem I was having - they came out and ended up fixing it on the spot with a simple tile swap even though they originally were only supposed to give a free quote. Couldn't be happier and will be recommending.
Ellis Kenny
Ellis Kenny
1684404277
Fantastic!!
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