A roof tile can be made of concrete, terracotta or even plastic, they are installed as a roof cladding and can be laid and cut to specific sizes. Roof tiles are highly regarded due to longevity, appearance and they can’t rust.
A ridge cap is a shaped piece of roof tile installed where two different sections of roofs intersect. Ridge caps are generally pointy or a round finish and are installed along hips and top ridges of roofs to enable a weather tight finish.
Bedding is a bed of mortar that lies underneath the ridge caps and secures the ridge caps to the roof. Bedding must be trowelled straight up and down to a neat consistency and allows the ridge caps to placed in a straight line at even heights. Bedding is a base coat to flexible pointing and once pointed will not be visible.
Bedding where necessary is where roofing companies cheat by not removing all the existing mortar and ridge caps. This system ruins the structural integrity of your ridge caps and will cause premature failure and more cost involved to repair it correctly.
Flexible pointing is an acrylic based compound with a sand medium and oxide for colour. Flexible pointing is available form a vast range of manufacturers which vary in quality and wind rating performances. Flexible pointing is a coloured finish for roofing tiles applied over bedding troweled to a neat consistency to match the colour of the tiles and can be installed on gables and ridge caps.
A hip is an area were two roof intersect externally, ridge caps are generally installed over hips to achieve a neat and water tight finish.
A Gable is an area of a roof where it ends vertically, bedding and pointing is generally installed or alternatively verge ridge can be installed.
A Flush Gable is where roof tiles intersect barge boards at the same distances, flush gables need to be bedded and pointed to a neat consistency.
An Over Hung Gable is where roofing tiles are installed 20mm past the barge boards, this s common on older style terracotta roofs. An over hung gable must be bedded and pointed to a neat consistency.
A Valley is an area were two roofs intersect internally, a metal flashing is installed guiding water to the gutter.
A Valley Iron is a piece of metal flashing installed underneath roof tiles to allow excess water to be relieve into the gutter.
Valley Seal is an upgraded product from dry valleys (No bedding and pointing) or wet valleys (bed and pointed) and can be installed on either. Valley seal is a foam product layered in bitumen to repeal water, eliminate pests entering roof cavity areas and to stop leaves from building up. As wet valleys are no longer approved by Australian Building Standards valley seal is a cheaper alternative than replacing valley cut tiles to comply with regulations.
Please see our video on replacing valley irons for more information
A Dry Valley is generally installed on newer homes and has no mortar or valley seal installed. The regulations are that the roof tiles must be cut 40mm from the centre of valley irons and all valley tile cuts to be secured by a mechanical fastener.
A Wet Valley is generally installed on older homes and is no longer approved by Australian Building Standards. A cheaper alternative is to install valley seal as it is far superior and eliminates expenses involved with re cutting new valley tiles.
A Batten is a piece of timber installed horizontally on top of the rafters to allow roof tiles to be laid and fastened. Battens are available in pine or hardwood in various sizes.
Sarking is a layer of aluminium laminated to plastic with a flame retardant adhesive. Sarking is an insulation barrier optionally installed under roof battens, although is mandatory in bush fire prone areas. Sarking can also be used on low pitch roofs for weather proofing to eliminate splash back.
Pressure Cleaning is performed to clean terracotta or concrete roof tiles of dirt, lichen and debris. Terracotta roof tiles can be restored to there former beauty by simply cleaning them. Concrete roof tiles generally require cleaning to allow roof sealers and roof paints to be applied.
Sealer is a product sprayed before applying roof paints, it prevents concrete roof tiles from absorbing moisture and allows a good base for even gloss levels whilst applying roof paints.
Roof Paint can be applied over concrete roof tiles to restore there former glory or simply a color change. Roof paints will not make your roof tiles last longer or prevent leaks as it is purely cosmetic.
Clear Coat is applied over roof paints to allow the chosen colour to last longer, as the clear coat will be the first coat being effected by the weather.
Primer is a base coat applied over roof tiles with colouyr left in certain areas. The Primer Coat allows even gloss levels once paint has been sprayed. Primer is also is a good base for applying sealers.
Safety Rail is a system installed to prevent falls from heights. Victoria has a height rule of any roof over 2 meters requires physical fall protection.
A Weep Hole is a hole in the bottom of the pointing to allow excess water to be relieved form behind the bedding and pointing. Weep holes are only required on top ridges which are horizontal.