It is recommended that this material be installed on a sloped roof of no less than 22.5 degree pitch. On a 45 degree pitch or less sarking should be used. Authentic Roof can be installed on plywood or battens. When using battens they should not be fixed more than 100mm apart (There must be support for each slate at the top, middle, and bottom). Important: Cut the top 150mm off the starter row of slates.

Exposures are 152mm, 165mm and 178mm (6”, 6.5”, 7”) measured from the bottom of the slate. In high wind areas use only 152mm exposure. It is required that a 5mm gap be maintained between the slates (side by side), this gap is achieved automatically during installation. Authentic Roof is totally impervious to moisture penetration however it is not advisable to carry out installation in temperatures below 0C degrees. If installation is required in low temperatures, then store the material in a warm place before use. Nails should be placed in the divots provided and should not be driven in extremely tight.

Important: Do not use a nail gun to install these slates.

The line-up scales on the side of the slates are intended as an approximate guide. To ensure straight lines and to maintain exact exposure in the rows, a chalk line or straight edge should be used. To cut to size or shape, score well on the front with a sharp utility knife and fold back, then trim. Slates can also be cut with a circular saw or jigsaw.

Hip & Ridge slates are slightly different to the regular roof slates as they have a narrow channel on the back, running down the centre. A heat gun should be used to gently heat this channel allowing the slate to be bent easily and then the desired angle can easily be achieved. They should be trimmed along the top side edges so as to not protrude out from under the next cap on top of it - this is for aesthetics only.

This product can be installed by anyone with a good knowledge of proper roofing procedure and does not require any specialised equipment or training. Installation should be in accordance with these recommendations and local council or state building codes, as failure to comply may void warranty.

Note: Authentic Roof is made from Recycled TPO that may have different amounts of carbon black in the material. Shades may be lighter or darker because of this so blending of the material is important. Bundles should be distributed evenly from each pallet and slates from each bundle the same thus evenly spreading any possible variation throughout the roof. This will improve the “natural” look of the roof.