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Roof Frame Rafter

A Rafter is one of a series of sloped structural (usually timber) members that extend from the ridge or hip to the downslope perimeter or eave, designed to support the roof and its associated loads:

  • Common rafter – the main support rafter of the slope between eaves, wallplate and ridge
  • Cripple rafter – the rafter connecting a hip and valley
  • Crippled jack rafter – a rafter connecting the end of a ridge to a valley
  • Hip rafter – a rafter following the line of the external intersection of two roof surfaces
  • Hip creeper rafter – a rafter connecting a wall plate and hip
  • Jack rafter – a rafter that fits against the end of a ridge at the intersection of two hips
  • Principal rafter – an upper member in a truss having the same inclination as the common rafters
  • Valley rafter – a rafter following the line of the internal intersection of two roof surfaces
  • Valley creeper rafter – a rafter connecting ridge and valley

Rafters carry loads from the battens and the gravity loads from the roof structure to the tops of the walls. Even where the roof structure is a truss, the top chord of the truss is called a rafter.




ABIS building and pest inspections are conducted to the highest standard by building inspectors with a minimum of 10 years experience together with the highest professional qualifications in their field. ABIS has been in business over 27 years conducting both building and timber pest inspections.

Our highly recommended home inspectors are all long term trusted employees not here today gone tomorrow sub-contractors. ABIS Inspectors are supported by a unique computer aided inspection system and the latest inspection equipment such as high sensitivity thermal cameras costing thousands of dollars that others don’t often have.

When you book a pre-purchase inspection with ABIS, our friendly local (they know the area and are not in a interstate or overseas call centre) staff will make the whole process easy for you. Our Office team make all the arrangements with you, your agent, the vendor, the tenant (if there is one) and you will be sent an email to confirm the inspection time along with a pre-engagement letter which covers the scope of the inspection. Good communication and local knowledge are key to you getting the most out of your building and pest inspection. We are always happy to answer all your questions and you are most welcome to be on site when we do the inspection. Our technology, systems and processes also mean you get your high quality report shortly after your inspection is completed.

And all this for an incredible low price.

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ABIS The 1st Choice in Building & Pest Inspections