Building Material: VENEERS

7/27/2019 Building Material: VENEERS

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• Veneer refers to thin slice of wood cut from a

log with a slicing, peeling, or sawing machine.

• It is used on plywood, fine furniture, and

laminated shapes for decorative and architectural

purposes.

•Veneering is an ancient art, dating back to

the ancient Egyptians who used veneers ontheir furniture and sarcophagi.

http://en.wikipedia.org/wiki/Ancient_Egyptians

http://en.wikipedia.org/wiki/Furniture

http://en.wikipedia.org/wiki/Sarcophagus

http://en.wikipedia.org/wiki/Sarcophagus

http://en.wikipedia.org/wiki/Furniture

http://en.wikipedia.org/wiki/Ancient_Egyptians



•Veneer is obtained either by "peeling" the trunk of a tree or

by slicing large rectangular blocks of wood known as fitches.

•The appearance of the grain and figure in wood comes from

slicing through the growth rings of a tree and depends upon

the angle at which the wood is sliced.

•Each slicing processes gives a very distinctive type of grain,

depending upon the tree species

http://en.wikipedia.org/wiki/Grain_(wood)

http://en.wikipedia.org/wiki/Figure_(wood)

http://en.wikipedia.org/wiki/Growth_rings

http://en.wikipedia.org/wiki/Growth_rings

http://en.wikipedia.org/wiki/Figure_(wood)

http://en.wikipedia.org/wiki/Grain_(wood)





Stability - The unorganized grain in burl wood is beautiful but horribly prone to

warping and splitting. By slicing a burl into veneer, wood movement is kept under

control by the adhesive and substrate. Even the most unruly woods can be sliced into

veneer and used to make a stunning, yet stable panel.

Economy & Availability - Many wood species are so rare and valuable that in lumber

form, are simply unaffordable. There's a marked scarcity of fine logs available world-

wide. By slicing a log into veneer, the square foot of "face" material is increased by

over 4,000% and a new economy is created for these forest products.

Practicality - used for curved work but it's certainly not limited to fancy projects.

They're often considered indispensable for many woodworking projects.Layup Options - can create some of the most beautiful kaleidoscope designs with a

keen eye and a few sheets of sequenced veneers

Recyclability and renewability: Wood has the least impact on total energy use,

greenhouse gasses, air and water pollution, solid waste and ecological resource use.

Seventy percent less energy is required in the use of wood compared with any otherbuilding materials.

Sustainability: Using veneer extends the use of a piece of timber. The wood that

might be used in one solid piece a few visible cm wide can cover a far greater area

when used as a veneer.

Toxicity: Nontoxic; veneer stores carbon and also maximises the use of harvested

wood.



1. Raw veneer has no backing on it and can be used

with either side facing up. It is important to notethat the two sides will appear different when a

finish has been applied, due to the cell structure of

the wood.

2. Paper backed veneer is as the name suggests,

veneers that are backed with paper. The

advantage to this is it is available in large sizes, or

sheets, as smaller pieces are joined togetherprior to adding the backing. This is helpful for

users that do not wish to join smaller pieces of

raw veneers together. This is also helpful when

veneering curves and columns as the veneer is

less likely to crack.



3. Phenolic backed veneer is less common and is

used for composite, or manmade wood veneers.

Due to concern for the natural resource, this is

becoming more popular. It too has theadvantage of being available in sheets, and is

also less likely to crack when being used on

curves.

4. Laid up veneer is raw veneer that has

been joined together to make larger

pieces. The process is time-consuming

and requires great care, but is not difficultand requires no expensive tools or

machinery. Veneers can be ordered

through some companies already laid up

to any size, shape or design.



5. Reconstituted veneer is made from fast-

growing tropical species. Raw veneer is cut

from a log, and dyed if necessary. Once dyed,

the sheets are laminated together to form ablock. The block is then sliced so that the

edges of the laminated veneer become the

“grain” of the reconstituted veneer.

.

6. Wood on Wood Also called 2-ply is a

decorative wood veneer face with a utility

grade wood backer applied at an opposing

direction to the face veneer



Production Advantages

The production methods are environment friendly, as thickness and wastage are controlled

to maximize production.

Application Advantages

The finished boards are almost always aesthetically pleasing. Acoustic wooden veneer-

based boards provide suitable noise control applications. Give the illusion of solid

timber but with a cost benefit, as well as freedom in design.

Processing and Storage Disadvantages

Veneer boards are characterized by two surfaces: the front, or face, and the back. The face is

constructed from more finely-grained wood species, while the back is of less quality material,

which may deteriorate easily. Finishing applications include lacquer, varnish, wax polish and

oil, which also undergo wearing due to constant use. Because a veneer board is composed of

several layers, in some instances, it might peel off when stored improperly.

Business Disadvantages

A veneer board business requires solid financial investing for equipment and technology, so

that supply is commensurate with demand flow. Unless an investor has a steady market for

finished products, going into the veneer board business may prove risky. Availability of skilled

workers may also prove to be a challenge, as the technique in producing the material requires

a high level of technical knowledge and expertise.



The end use for veneer are manly used fordecorative purposes and the construction

of plywood.

Veneer is used by

•Manufactures,

•Cabinet Makers,•Construction

•Joinery Industry

•Interior Designers

•Architects.

The veneer lay ons are placed on other

wood constituted products such

as Medium Density Fiberboard,

Particleboard to produce.

•Cabinet interiors and exteriors

•Desk and Table tops

•Kitchen tops•Doors

•Draws

•Furniture

•Shelves

•

Wall Paneling•Countertops

Veneers are also used in

business and commercial

institutions, hospitals, gym

walls, lecture halls, workshops,

sports and reception places and

work factories.

http://fennerschool-associated.anu.edu.au/fpt/plywood/overveiw.html

http://fennerschool-associated.anu.edu.au/fpt/plywood/overveiw.html



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Building Material: VENEERS