|
*Links to printable popup screens |
|||
|
Jumbo boards are available in three styles to match existing roofline detail and to widen design choice.
They may be fixed directly to the rafter ends or gable ladder and will bear the weight of the eaves course of tiles and the rainwater system. |
Certification
Ventilation
|
||
|
Range Notes  Standard
lengths are 5m. Non standard lengths may be supplied where a
commercial requirements exists. Some
profiles are double-ended (with return leg and rebate on each side)
to be cut into separate boards to meet design requirements on
site. A
1.25m double ended board is available for box end
construction. A
full range of matching, purpose-made mouldings for joints,
internal and external angles, as well as general purpose
trims. Foiled
boards, in Square finish - Mahogany, Light Oak &
Black |
Range Information: |
||
|
Characteristics Boards
are fixed directly to rafter ends or gable
ladder and will fully support the eaves tiles and the rainwater
system. BBA Cert No 91/2620. Boards
are rebated to accommodate a 9mm soffit board by simple push fit
(eg Gee Pee flat or Polo ventilated). Square Jumbo allows the use of inclined
soffits and is suitable for 'open eaves'
constructions. |
Swish Cellular PVC |
||
|
Important Design and Installation notes: Degraded
timber must be replaced and all new timbers should be preservative
treated. An
early decision should be made as to the provision of ventilation,
either over the fascia (Fig24) or through the soffit (Fig6 ) Where
Overfascia Ventilator (C504/505) or Vented Eaves Protector (C404)
are specified the fascia height must be reduced by 25mm
(Fig24). Where
cladding is used as a soffit, allow for the overall thickness
of the cladding profile at the joint (16mm) when specifying the
fascia height. (Fig16). Installation
of eaves protection (ie. Jumbotec or Vented Eaves Protector) will
significantly increase the life expectancy of the installation. The
rear flange of the unit must dress under the existing felt edge.
(Fig6) Where
eaves protection is not to be fitted the roof felt must be in good
condition and dressed over the fascia down into the gutter(Fig7).
In the case of severe deterioration, the roofing felt may require
complete replacement. The
necessity for tilt fillets will depend on factors other than that
of supporting the tiles or slates, such as angle of pitch and
position of tile battens. Whilst
the bottom groove in each fascia board accommodates the soffit
board by simple push fit, Fig7 & Fig17 show alternative
relationships for the fascia and soffit. Gutter
brackets should be fixed in accordance with the manufacturer's
recommendations, ensuring that the fixing penetrates the rear skin
of the fascia board. Always
specify the recommended fixing materials and fixing centres. |
View Images *Fig2/3-Fascia & Soffit Joints *Fig24 -Vented Eaves Protection*
CAD Library DXF & DWG drawings of Individual profiles and typical installed conditions
Important Information
|
||
|
Framing out and preparatory
work
Rafters
must be at maximum 600mm centres (Fig1)Note: centres must not exceed 400mm for foiled profiles. Rafter
ends should be checked for plumb and level, to give a true line for
the fascia. If necessary, suitable packings should be
applied. Preparatory
and installation work for soffits and bargeboards is detailed
elsewhere. Suitable
framing is also required to give adequate support at junctions
between bargeboard and fascia and at hip and valley rafters. (Figs
4/5) The
bearers should be checked for line and level and suitable packings
applied where required.Installation Sequence
Soffit
systems must be installed prior to the fascia. Refer to Soffits Installation Guide. Select
the appropriate height of Jumbo board allowing for height of
over fascia ventilator unit where required and soffit board
location. First
fix any concealed-fix corner trims. Fix
the board to each rafter end with not less than two Trimtop
nails or capped screws at the recommended centres. When installing
25mm Bullnose Jumbo use 65mm fixings. Square and Ogee
Jumbo can be fixed with 65mm Trimtop nails or 50mm capped
screws. Butt
joint fascia lengths using matching joint mouldings, nailed
through the preformed holes to one plank end. The next board
is then offered up and engaged into the trim by simple push fit
(Fig2/3). Joints
should be made between rafter positions (Fig2/3) Fix
internal/external corner covers, using Swish low modulus silicone
(C077). |
Other Guides
|
|
Replacement Fascias |
 |
