| YOUR
QUESTIONS ANSWERED |
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What
is Traditional Timber Framing? |
Traditional
Timber Framing is a craft that involves the jointing of large section
timbers (with the use of pegged mortice and tenon joinery) to form
a structural frame for a building. This system has been used for
centuries throughout the world with some of the most beautiful ancient
buildings still standing as a testament to the trade. |
| What
timbers do you use? |
Traditionally
in Britain and Europe, Oak has been the main timber used for framing,
thanks largely to its strength and durability. In Australia we don’t
have Oak but we have a wide range of timbers that are equally suitable.
When choosing a timber, ideally it is best to have some of the following
features; |
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Strength: The timber must be strong enough to
support both the building and the joinery
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Durability: If the timber is going to be exposed
to the elements it must be durable
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Stability: As we use large section unseasoned
timber as it dries it will tend to shrink and move.
Some timbers will have minimal drying movement while some have
quite a lot.
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Workability: Ideally for the carpenter it is
best if the timber is nice to work with, but we are able
to work with difficult timbers also.
-
Sustainability: We only use timbers that come
from well managed sources.
We often used salvaged timbers from unwanted or fallen trees,
and are able to use curved
and twisted logs that would normally be discarded.
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| With
all that said, Cost plays a factor also and the 2 basic alternatives
for a frame are hardwood, or softwood. For our softwood frames we
prefer to use Cypress Macrocarpa or the native white cypress Callitris
glauca. And for hardwood frames we can use a few different timbers
including Ironbark, Grey gum, Tallowwood, Yellow Stringybark, depending
on the application and the availability. All our timbers are Australian
grown and sourced as locally as possible. |
| Is
the timber used ‘Green’? |
| Yes.
Most of the timbers in a traditional frame are used unseasoned, and
allowed to dry in situ. As the timber dries out over the years there
will be some movement, and joints may open or twist a little, which
adds to the natural beauty of a timber frame. Thanks to the joinery
design which has evolved over hundreds of years the frame actually
gets stronger and stronger over time. There are some members in the
frame which need to be seasoned though such as the braces and the
pegs. |
| How
are the joints secured? |
| The
timbers are mostly jointed using mortice and tenon joinery which are
then secured with riven hardwood pegs. Each peg is handmade to provide
maximum strength and when they are driven into the joint they pull
the tenon tight into the mortice. |
| Does
the timber need treatment? |
| No.
We only use timbers with good natural durability. It is better to
protect less durable timbers with good building design rather than
use chemical preservatives. It is possible to give the frame an oil
or similar finish to enhance the natural beauty and colours of the
timber but if the timber is left exposed outside it will simply weather
to a lovely silvery grey. |
| Do
you make the frames on site? |
| We make
our frames at our workshop in the Southern Highlands of NSW, and then
take them to site for raising, wherever that may be. Our on site time
is very minimal as all of the joinery is done in the workshop, and
a complete frame would typically be raised in a couple of days. |
| Do
your frames comply with Building Regulations? |
| Absolutely.
While our frames are outside the scope of the modern ‘Timber
Framing Code AS1684’ they are designed based on principles that
have been tried and tested over hundreds of years. Our frame designs
are fully engineer certified which can then be submitted to the relevant
authorities for construction approval. |
| How
much does it cost? |
| Each
of our frames are custom designed to suit the particular project,
so the costs will vary from job to job. |
| We work
with our clients to design a frame that suits their budget and lifestyle.
A large amount of the cost is in the joinery detail, so if the frame
design is kept fairly simple it can be very cost effective or it can
be highly detailed and ornate, which will obviously carry a higher
cost. |
| In comparison
to other building methods a Traditional Timber Frame is very competitive,
and being completely handcrafted and unique is definitely worth the
investment. |
It is our aim to keep costs as low as possible to ensure great quality
and value for our clients.
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