|
Villatile panels roof pitches from 10° to 90°
Villatile lightweight roofing tiles, to be supplied by Britmet Tileform Ltd.
Each tile must be secured using four no. coloured 2.6mm x 50mm galvanised fixing
nails,driven through the downturned nose of the tile into the face of the battens,
(for 0.9mm Villatile, a coloured Tek screw can be used- part no: ASF2-OOE55)
Note: Stagger bond the tiles
BATTENS
Treated tiling battens of approved quality (e.g. tanalised), of suitable section
laid at 370mm centres (for 0.45mm thick) or 368mm centres (for 0.9mm thick)
except the eaves batten (see eaves section) and secured to the rafters using
galvanised nails. Joints in the battens should be staggered and meet half way
across the top of the rafters, as standard code of practice.
UNDERLAY
Approved reinforced felt, BS747 (type 1F) or VPU Breather membrane to be laid
over rafters, lapped and secured to the rafters with galvanised clout nails
and carried well into gutters. All to comply with current regulations.
VENTED TOP ROW (Under Half Round Ridge)
Two tile battens to be fitted side by side on both sides of the ridge, using
galvanised nails. If necessary, the top course of tiles to be cut and bent using
a guillotine and folder (available from Britmet Tileform Ltd) The rear edge
of the tile is to be turned up to form a 25mm upstand against the top tile batten.
Each tile must be secured using four nails driven through downturn as previously
described. The vented top row flashing is to be fitted over each side, and fastened
to the tile battens, nailed through the downturn of the vented top row, into
the tile upstand, and face of the batten, using five nails per side.
HALF ROUND RIDGE
The ridge caps to be laid across the ridge of the vented top row flashing, and
fastened down through the top of ridge flange., into the ridge of vented top
row flashings. The end caps to be fitted at ridge/ hip ends, and exposed cut
edges should be treated with touch up kit supplied.
ANGLE HIP FLASHING (Half Round Ridge)
A 38mm x 38mm hip batten to be nailed to the tile battens on each side of the
hip rafter, using galvanised nails.
Tiles to be cut and bent to form a 25mm - 35mm upstand against the hip battens,
using a guillotine and bender (available from Britmet Tileform Ltd).
The hip half round ridge flashing is to be fitted over the battens and nailed
through the downturn, into the face of the battens using four nails on each
side.
EAVES
The bottom course of tiles to be secured using four no. coloured, 50mm tek screws
fixing driven vertically through the tile, as near to the high point of the
tile profile as possible and into the fascia board, or through the eaves batten
placed approximately 20mm behind the fascia board if the Villatile eaves ventilation
system is used. These nail heads to be sealed using the Villatile finishing
kit.
The top of the fascia board or eaves vent, if used, to be in line with top
of battens. Fit Lay Board or Tilting Fillet at the eaves if appropriate, to
ensure any moisture on the underlay drains into gutter.
EAVES VENTILATION
Roof pitch above 15°
The top of the fascia board should be fixed 23mm below the top face of the
eaves batten allowing for the Villatile 10mm eaves vent system.
Roof pitch below 15°
The top of the fascia board should be fixed 25mm below the top face of the eaves
batten allowing for the Villatile, 25mm eaves vent system. Note: Where the insulation
follows the roof slope, the Villatile ventilation tray should be installed between
the rafters.
VALLEY
The valley should be formed from lead, moulded glass fibre or similar approved
lining, supported on valley boards. Tile battens should project over the valley
to provide fixing for the tiles.
Villatile panels to be measured, cut and bent, using the guillotine and bender
(available from Britmet Tileform Ltd) allowing sufficient downturn into the
valley.
BARGE BOARD COVER
The timber barge board should project 25mm above the top of the tile battens.
A 50mm x 50mm timber batten to run parallel to the fascia board. Villatile panels
should be cut and bent up against the timber barge batten.
The Villatile scribed barge board cover to be secured using 5 fixing nails
driven through the downturned edge into the barge board and five nails to be
driven vertically into the barge batten (the heads of the vertically fixed nails
to be sealed, using the Villatile finishing kit.
SIDE-WALL FLASHING
Villatile scribed side-wall flashing to be secured using fixing nails, one driven
vertically into each batten (these nail heads to be covered, using the Villatile
finishing kit)
Villatile cover flashing to be dressed over the vertical section of the side-wall
flashing and be dressed into the brickwork.
VILLATILE INLINE TILE AND SOIL VENT
To provide additional ventilation, the Villatile inline tile vents are available
providing an airflow of 7,500mm2
The tile underlay must be cut to allow the spigot of the tile vent to pass
through. The Villatile panel vent is installed to provide full weather security.
The tile vent is secured by overlapping a Villatile panel on either side and
nailing through the nose of the tile, as previously described. Nails must not
penetrate the vent tile.
The Villatile inline vent tile can also be used as a weather protected exit
point for soil pipes or extractor fan ducts by means of a flexi hose and pipe
adapter that connects the vent to 100mm stacts or duct work.
VILLATILE GAS FLUE RIDGE TERMINAL
Available to suit angle ridge. Type (R) adapter and extension piece supplied
by others.
Please note: If full top course tiles need cutting at ridge, you must measure
and fold tile first, and then cut tile to correct ridge measurement
|
