Hardwoods – Sweet Chestnut and Oak Timber Cladding2018-11-08T15:54:33+00:00

NORCLAD British Sweet Chestnut & Oak Timber Cladding

Primarily we see Softwoods specified for timber cladding, NORclad are also able to offer selected Hardwoods; British Sweet Chestnut, and Oak; UK, European and American.

The above species are often finger-jointed to cut out defects and offer a more usable length, which can be beneficial when working on length specific projects.

British Sweet Chestnut Timber Cladding offers a similar golden colour to oak, but with stronger and more pronounced grain. Sometimes selected as an alternative to Oak, Sweet Chestnut is a lighter species whilst still being very stable, a straight grained, hard-wearing and durable timber.

Oak by nature is a slightly heavier timber, often used for Timber Frame projects. When selected for Timber Cladding it is vital that the species is either, Air Dried, or Kiln Dried. If Oak is specified as ‘green’, the Moisture Content will be far too high, likely to cause issues machining, and certainly allow for movement and distortion once installed.

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FURTHER INFORMATION

Tannins

With both Oak and Sweet Chestnut it should be noted that for the first few months after installation the high tannin content of the timbers will begin to exude. This is turn will result in staining where the timber either comes into direct contact, or has poor interface detailing with other materials such as render, masonry, or permeable stone. As with all all of our Softwood claddings, we once again recommend Stainless Steels Fixings are used on Hardwood timbers, the Tannins within Oak and Sweet Chestnut will corrode ferrous metals.

Weathering

Left uncoated, both Sweet Chestnut and Oak will weather down over time – the natural variation in colour of the freshly machined boards will even out to a more uniform silver grey.

UK Sweet Chestnut

Wood Type: Hardwood.

Origin: Across the U.K.

Sustainability: Sourced from well managed forests – FSC certified available on request

Availability: Sawn and planed products in a wide range of thicknesses, widths and profiled patterns.

Colour: Light straw like appearance, with colour variation due to finger jointing.

Typical end uses: Cladding

Durability: Durable (Class 2 EN350-2)

Density: 550 – 650 kg per m3 at 16% moisture content.

Dimensional stability: When the product is finger jointed and moisture content is 18%, movement will be small.

Fixings: Stainless steel fixings are always recommended.

Strength & Working properties: Sweet Chestnut resembles Oak, although is easier to work with than Oak. Pre-drilling would be recommended.

Typical Section Sizes: Ex 25mm x 75, 100, 125, 150mm

Typical Lengths: Jointed at either 4.0m or 6.0m, allowing for a small % of cutbacks.

Chemical Properties: Sweet Chestnut has a high tannin content which can be released when the timber becomes damp or wet. This can lead to staining in contact with metal or ferrous fixings. It is advisable to protect any surfaces that may come into contact with the board prior to fixing. Staining may be removed using an oxalic acid cleaning agent. Once the tannins have exuded, untreated the timber will weather to a silver grey.

UK Sweet Chestnut

Wood Type: Hardwood.

Origin: UK, Europe, America

Sustainability: Sourced from well managed forests – FSC or PEFC certified available on request dependent on origin selected.

Availability: Sawn and planed products in a wide range of thicknesses, widths and profiled patterns.

Colour: Range of colours, spreading through yellow to brown. Colour variation may be more apparent on finger jointed specification.

Typical end uses: Timber Frame, Cladding.

Durability: Durable.

Density: 670+ kg/m³ average.

Dimensional stability: When the product is finger jointed and moisture content is 18%, movement will be small.

Fixings: Stainless steel fixings are always recommended.

Strength & Working properties: Pre-drilling, and screw fix would be recommended.

Typical Section Sizes: Ex 25mm x 75, 100, 125, 150mm

Typical Lengths: Finger jointed lengths open up the availability to match specification.

Chemical Properties: Oak has a high tannin content which can be released when the timber becomes damp or wet. This can lead to staining in contact with metal or ferrous fixings. It is advisable to protect any surfaces that may come into contact with the board prior to fixing. Staining may be removed using an oxalic acid cleaning agent. Once the tannins have exuded, untreated the timber will weather to a silver grey.

Regular Fixings

NWC2

NWC2

NWCC1

NWCC1


Get in touch for other requirements, including bespoke profiles, various sized PSE boards and Window reveals/cill.

Specify Hardwoods
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Gagle Brook Link Box
Pets at Home Link Box
Sweet Chestnut Link Box

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For more information on any of our products or to arrange a quote, please contact us or complete our online quotation form.

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