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Forticrete – Architectural Masonry, Roofing, Cast Stone, Walling Stone, Standard Masonry and Civils

Dry Fix Bonnet Hip

Gemini Bonnet Hip

The Forticrete Dry Hip System is suitable for use with:

on roofs with a pitch between 22.5º and 55º. The dry hip utilises a bonnet hip tile and sealing tape.

Dry Bonnet Image

1. Construct the hip rafter to the height for the tile:

  • Gemini - 65mm
  • Minislate - 65mm

Note: the hip rafter heights are nominal and are measured from the underside of the tiling batten to the top of the hip rafter, and are based on a 25mm high batten

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2. Fix lengths of batten to the hip rafter to support the ends of the battens. Felt and batten the roof in the normal manner

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3. Tiles should be cut accurately to the hip rater using either standard or T½ tiles* where cutting would leave an unsupported slip of tile.

* Double tiles - made to special order - may also be necessary depending on the roof pitch.

Note: For Gemini 2 x T½ side by side may be used in lieu of a double tile.

Note: Mitre cut the two end tiles to allow the blockend to fit closely to the corner of the facsia.

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4. Peel the backing of the adhesive and roll out the tape seal over the cut tiles as work commences up the whole length of the hip. Joints should be overlapped by 75mm.

On some pitches a timber packing piece maybe required to support and aid the fixing of the blockend ridge.

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5. Nail a blockend ridge to the timber packing piece using an 80mm hammer screw and integral seal. Further secure at the top using an 80mm hammer screw and seal.

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6. Lay subsequent bonnet hip tiles by using an 80mm hammer screw and seal. Make sure the bottom edge of the bonnet hip is inline with the bottom edge of the course of tiles it is positioned over.

Note: When meeting a mortar bedded ridge, or dry ventilated ridge, a code 4 lead saddle is used to weatherproof and protect the ridge hip intersection.

Bonnet Hip Components
[icon] - Adobe PDF Dry Bonnet Hip Fixing Instructions (79 KB) Click here to download
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