Abutments
Coverland EasyFlash, Easily Sealed for 15 years.
EasyFlash at a top edge abutment
The flashing material, turned up and fixed to the wall, must be carried well over the first tile by at least 150mm, and finished with a cover flashing/connection strip.
EasyFlash at a side abutment
All tiles with a contoured profile can be treated in this manner at a side abutment. The flashing material, turned up and fixed to the wall, must be carried well over the nearest raised tile contour and finished with a cover flashing/connection strip.
EasyFlash at a back edge abutment
The flashing material, turned up and fixed to the wall, must immediately be placed over the full tiles above the abutment and carried under the second row of tiles as far as necessary to ensure efficient waterproofing. It must also be extended on each side of the abutment, overlapping the side flashings by at least 150mm. This treatment at a back edge does not provide for the flow of water and debris, and is only acceptable for short distances (chimney, etc.)
For further information on the installation of EasyFlash click here.
Gutter Method
Concealed side gutter
A pre-formed gutter located adjacent to the abutting face must be positioned below the tile level, supported by a timber insert. Make sure that the side welt on which the tiles are laid is not pressed flat. The abutting tiles should be laid (whole or cut) approximately 40mm away from the abutting face to allow the water channel to be cleaned.
Where a concealed gutter is not discharging water into an eaves gutter (e.g. around the chimney stack or other abutment) it is important to install it in such a manner that water will discharge freely onto the head of the immediate course of tiles below the abutment.
The whole gutter should be pitched at a slightly lower angle to lead onto the head of the tiles below, and a trough should not be allowed to form at the bottom of the gutter where the debris and water will dam up. Care should also be taken to form the bottom lip of the gutter in such a way that the rain will not overflow into the roof. At this particular point the front flashing should be carried up under the side gutter and adjacent tile as far as necessary to ensure a waterproof junction.
Where this type of gutter is discharging water directly into the eaves gutter (e.g. abutting wall), the same recommendations as for a valley will apply with regard to the fascia board. A tilting batten will be required to support the front of the tiles hanging into the concealed gutter.
Back Gutter
The size of a back gutter should be in accordance with the expected volume of water it is likely to carry. In constructing a back gutter, the bottom edge of the course of tiles immediately above the gutter shall be raised to maintain the same tile pitch as for courses (see Tilting Dimension).
The tiles discharging rainwater into the back gutter should overhang it sufficiently to ensure an efficient discharge. The back gutter should be so formed at each end as to allow a free flow of water into the concealed side gutters. All abutment flashings should be finished with a cover flashing (of the same material to avoid the possibility of electrolytic corrosion) either stepped or raked and chased into the brickwork.