Jade Pavilions General Product Description

Environmental Statement

The timber used is from FSC certified sustainable sources wherever possible with structural and framing timbers of Baltic pine, flooring and sectional timber is redwood grade of Baltic pine. All softwood timber is pressure treated to EU standards of Health & Safety although care should be taken with run off near to Koi ponds. Other woods such as Douglas Fir are available at additional cost. The Western Red cedar (Thuja Plicata) and Eastern White cedar (Thuja Occidentalis) shingles used are from the eastern seaboard of Canada from quick growing sustainable sources. All decorative finishes are from the award winning Protek range of environmentally benign water based acrylic wood stains, child, plant and animal friendly.

Roof Construction


The roof is constructed from a pressure treated tanalised timber framework supporting open half round timber rafters and conventional battens, upon which the shingles are fixed.  The roofs are curved to a greater or lesser degree with ridges cut from 300 or 450 mm timber. The tanalised timber has a residual green coloration whilst the cedar shingles is more of a reddish nut brown. The timber treatment is designed to provide a minimum life of 25 years without requiring further treatment. The shingles have a high natural oil content and are fully weatherproof. In due course you may find it desirable to treat the shingles in order to restore their full decorative appeal and most of the modern oil based cedar finishing treatments or teak oils may be used. All fixings are either stainless steel, passivated galvanized (gold) or epoxy coated. All timber is left with a natural finish with the exception of the underside of the roof components, external to the roof frame, which is treated as per the roof framework.

The roof is supplied in sections, which are shingled in our workshop. The Orange Blossom has a single roof section whilst other pointed roof models have 4-8 sections. The Yangmingshan however has six sections and the Fuji-san has one section per side. The ridges (section joins) are either finished with pre-fabricated ridge sections or finished on-site with any hidden weatherproof liner.

Roof framework

The framework is constructed using a 100mm nominal jointed post and ring lintel structure from tanalised machined fir poles and finished with a decorative wood treatment. Base plates for posts are included where appropriate – for exposed posts. The framework is constructed from either machine rounded or square section (with rounded edges) depending on whether shoji panels are to be fitted. A square section lintel is required to fix the suspended door gear.

Pavilions

Pavilions are supplied with base plates for locating and securing the roof supports and our own design of heavy-duty "Yin-yang" wrought iron brackets for bracing the roof. These decorative brackets are manufactured by the local forge and are available as a separate item for other uses. Pavilions do not usually include flooring, as a fully weatherproof floor (e.g. flagstones) is required due to the open aspect of the pavilion.

Pavilions may have veranda railing of Chinese or Japanese design.

Verandas

These are constructed with additional framework and access opposite the garden house door unless otherwise specified. The veranda may be internal to the roof or external. The flooring will be constructed from standard 28mm treated decking to enable water to freely drain. Where this is used in conjunction with standard 20mm treated tongue and grooved flooring the difference is accommodated in the joist thickness. The verandas have a short post with finial and section lengths according to the panel selected. The handrail is generally fitted at a height of 850mm.

Floors

The floors are constructed from best grade tanalised tongue and groove boards fixed to timber joists and fully treated or from treated profiled decking boards. These are generally supplied in sections for ease of handling or built on site. This provides a natural durable weatherproof finish that can be decorated if required.

A special option for all year round use includes under floor insulation using the latest high tech aluminised bubble insulation.

Floors are not normally supplied with Pavilions, which are often erected on pre-existing decks.

Ceilings

The ceiling option which is normally only used in conjunction with an internal veranda or when all year round use is intended, is constructed from painted 6 mm external ply with joint covering laths and treated timber joists, size according to span covered. The ceiling may be insulated.

Walls

The walls may comprise a number of similar wall modules built on a treated 45mm square framework and made up as 1.2m (approx.) sections depending on overall size. These are finished externally with a number of different cladding options each finished with a decorative timber treatment.

With the 4-seasons panels the wall cavity is insulated and the internal walls finished with pine tongue and groove boarding, treated with a single coat of acrylic matt varnish for protection.

Shoji style panels are single skin units with three in-fill panels of white exterior rigid PVC foam board in a standard frame with decorated figure work creating smaller panels approximately 0.6m square. These panels can also be supplied as double skin insulated panels giving a panel thickness of 15mm with exceptionally good thermal properties.

Lattice Panels

These are available in a number of designs for use as veranda or pavilion railings and in a lighter form as window overlays. They are built within an outer frame of 50x25mm treated machined timber and fitted with a “D” shaped handrail when used as railings. The styles are:

-     The Lotus panel, a Chinese style based on Buddhist symbolism with interlocked “L” shapes. This panel has fixed proportions of 3:2.

-     Red Dream panel based on an ancient design seen in the temples of the Forbidden City in Beijing and is proportioned 3:1 but can be flexed. This panel works well as an eaves panel in place of Yin-yang brackets in addition to uses on pavilions or as window overlays.

 -   A Japanese style with figure-work running at 45º. This panel has greater flexibility of proportions.

 Windows

These may be glazed in standard domestic glass with added lattice figure work as an overlay.  Rectangular windows occupy the upper two 0.6m squares of a section and are glazed as standard and come complete with glazing beads. There is a choice of lattice work (kumiko) designs.

The Shoji moon windows comprise a round open window cut into the Shoji panel with a 50mm surround and small bamboo figure-work. It has a centre 2/3rds the overall panel height. The window surround is finished with a decorative wood treatment in the secondary colour of the scheme chosen. The window is glazed in 3mm acrylic. Standard window sizes are 0.6m or 0.9m diameter. The larger size is only available with higher eaves height panels.

Doors

Shoji style doors have single skin white panels with the upper two panels glazed. The doors are rebated to provide a draught proof closure. A choice of Kumiko (overlays) may be fitted externally. The standard option is a simple lattice. The doors are usually hung from suspended door gear and supplied without any furniture in the Japanese style. Simple door pulls in the form of wooden/bamboo sections may be fitted.

 Finials

One of two finial styles may be fixed to the central roof locking pin at the apex of all pointed roof models. The styles are ball for all smaller units and an onion for larger units. The Yangmingshan having a central top ridge is finished with a shingle ridge and has no finial. The finials are treated with a decorative wood treatment and are included in the price of the pavilion.

Yin-Yang Brackets

These heavy-duty brackets embody the Yin-Yang symbol and are forged from 25/32mm x 5mm thick wrought iron. They are used for bracing the pavilion roofs, but are equally well suited to other applications.

Rustic Benches (Orange Blossom)

These are available with the Orange Blossom model only and are made from treated, machined Douglas Fir pole trestle framework with treated pine board seating and finished to match the teahouse.

Pressure Treated Timber

A general note regarding changes made in the treatment of timber as a result of EU legislation to remove some of the more toxic chemicals (at treatment stage only). The current Tanalith E and similar treaments appear to offer less protection than the previous CCA (Copper, Chromium & Arsenic salts) treatments and the metal salts used are not fixed in the timber for some time. This can result in the migration of the metal ions to the surface affecting the adherance of any (water or spirit based) paint/finish. You may find it necessary to recoat horizontal surfaces after 6-12th months before the usual life span of the paint finish can be achieved.