Decra Roofing Resource Centre, over 30 year’s experience of finding the right lightweight roofing solutions

Eaves Detailing

The Decra lightweight roofing system offers remarkably design opportunities, it is capable of being installed on roof pitches as low as 10° and because of its lightweight nature Decra lightweight roof tiles can be installed on a supporting structure with rafters as far as apart as at 1500mm centres.

Designing a successful eaves detail to deal with a wide range of structural variations is simple, but requires careful consideration to achieve a successful design. The drawing below shows a typical eaves detail for the Decra roof system, but before proceeding with your roof design we would recommend that you read our eaves detailing roof construction guide.

Typical Eaves Detailing

Decra Classic & Noxite - Typical Eaves detail - Detail from drawing DTSE017

Applies to Classic & Noxite – Similar general principles of construction also apply to: Decra Plus Tile, Elegance and Stratos

 

Installation Guidance - Decra Classic & Noxite Tile

Setting Out The Fascia Board At Eaves

The positioning of the fascia board at the eaves is crucial to the success of the installation.
The fascia board must be set at the right height, set too low the tiles will dive, set too high the tiles will kick up at the wrong angle. The top edge of the fascia board should be set at the same height as the tile battens.
However if you are installing fascia mounted eave ventilators or Decra Eaves Guard the fascia board may need to be set lower (refer to the instructions supplied in the Decra Ventilation pack & Decra Eaves Guard pack).

 

Unvented    &    Ventilated

 

Battening

The most crucial factor in laying tiles is the accurate setting out of the tile battens, if you are not accurate then the tiles won’t fit together properly.
Time spent taking extra care when battening is time saved when tiling.

Batten Sizes
Rafter Centres Batten Size (recommended)
450mm 38mm x 25mm
600mm 50mm x 25mm
900mm 50mm x 50mm
1200mm 50mm x 50mm

Setting Out The Battens At Eaves

The positioning of the first batten at the eaves is crucial to the success of the installation.

* The first tile batten should be placed in a position to suit the roof pitch and/or type of gutter, typically this is 330mm from the front edge of the fascia board to the front edge of the first tile batten.
However if you are installing fascia mounted eave ventilators refer to the instruction supplied in the Decra Ventilation pack.

Battening The Roof

Then fix the other battens working from the bottom of the rafter, at 370mm spacing's from front lower face of batten to front lower face of batten.
Care should be taken to be accurate when installing the battens. Time spent taking extra care when battening is time saved when tiling.

Decra Eaves Guards

Decra Eaves Guard is an eave protection system which is installed underneath the roofing underlay providing support for the underlay at eaves.

The installation procedure for the Decra Eaves Guard varies according to roof pitch and rafter spacing.
If you are installing the Decra Eaves Guard refer to the instruction supplied in Decra Eaves Guard pack.

 

 

Typical Eaves Detailing (Decra Oberon)

Oberon - greater than 15º roof pitch

 

Other Associated Eaves Products

 

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