There are 3 grades of teak.
  1. A grade Teak
  2. B grade Teak.
  3. C grade Teak

A grade teak.

Teak2  Teak4
The timber contains no knots, uniform dense wood grain and natural golden yellow color.
A grade teak is rich of natural teak oil, make the timber weather and insect resistant.
A grade teak is processed from mature teak logs.
Most of the teak tree has been more than 50 years of age.
In Indonesia, A grade teak can only be found by processing Perhutani teak, not from others plantation.
Perhutani teak mostly is planted in limestone area.
Since the soil is unfertile and dry, it makes the trees grow slowly.
In 30-40 years, Perhutani teak trees can only reach 20-30 cm in diameter.
To reach diameter 40 cm up, the trees need more than 50 years to grow.
This slow growing process makes Perhutani teak trees have more density compare with teak from others plantation.
Before harvesting, Perhutani normally will cut the outer ring of the trees root to make it dry standing for 1-2 years. This process is called by “TERES “.
During this process, most of the water contain will be dry out. The result is dense, less sapwood and stable logs.
TERES is good for long storage since wet logs will be easy to crack.
The above features make A grade teak has the highest pricing level compare with others.

Before production A grade teak timber will be kiln dry to reach MC below 12 % .
This drying process will make the timber event more stable.

After production the MC normally will rise between 12-15%. It is because Indonesia is tropical country and the environmental humidity is quite high.

B grade Teak.

B grade teak is also processed from Perhutani teak.
The timber has knots, not uniform wood grains and more color variations.
The wood grains color can be yellow, dark brown or even black / tiger wood grains.
The timber stability of B grade teak is the same as A grade teak. Only the outlook is completely different.

Some manufacturer use chemical to change color and cover the defects.
On request, we can produce B grade teak, but only with natural color.
We do not use chemical.

C grade Teak.

C grade teak

C grade teak is processed from young teak trees.
The timber is soft, easy to twist and contains a lot of sapwood.
Insect will also attack the timber.

In Indonesia, C grade teak mostly is processed from
“ JATI KAMPUNG ( Kampung Teak ) ” or  “JATI  EMAS ( Golden Teak ) ”.
Jati kampung and Jati emas is commonly planted in village or private plantation area.
Since the soil is fertile and wet, the teak trees grow fast.
Jati kampung / Jati emas can grow in 30 cm diameter only in 10-15 years.
The result is soft timber, contains much sapwood and pale color.
Jati kampung and Jati emas is normally harvested by cutting it fresh without any teres.
It make the log is easy to cracks and event mildew will grow on it.

C grade teak is very cheap in the market. It has the bottom price compare with A or B grade Teak.
Some manufacturer process C grade teak and use chemical or special paint to change the color.
But still, it doesn’t change the timber strength.
C grade teak furniture will not last long in outdoor use.
We do not process C grade teak.

Recycle teak / Reclaimed teak.

Recycle teak
Recycle teak is taken from old Java houses or old bridges.
Recycle teak has a lot of defects: rotten, grooves, death knots,
spliced, crack, nail holes, dark color, sapwood, etc.
Recycle teak furniture is considered as antique furniture,
so customers have to accept the defects as they are.
In production the defects will be repaired, but still it is visible.
The finishing will only be rustic brushed.
If customers do not like these features, please take only new A grade teak.
We kiln dry recycle teak timber to stabilize it against the weather.

Weathering Process.

Weathering process normally takes between 6-9 months.
During this process, A grade teak will change color from golden yellow to become patina grey.

Some following info may be use full for customers to know better about teak characters.
1.    Do I need to clean up my new teak furniture before using?
Yes! You need to clean up the left over production dust before using your furniture.
This left over dust sometimes will stick on your cloth or cushion and makes brown stain.
Use soft damp cloths to clean up your furniture

Cushion Br

2.    Do I need to protect my cushions and sling furniture?
Teak contains natural teak oil.
During weathering process the oil contains will drain out.
Teak oil will make brown stain to your cushions.
Regular cleaning of your furniture and cushion
will protect them from worst stains.

Under the rain, teak oil will also dissolve in the water
and make brown stain to your sling furniture.
It will be wise to take your cushions up from the wet furniture
and move your sling chairs out from under the table to avoid teak stain.

water spot

Rain water will also make water spots.
To clean it up, you can use soap water and soft brush.
Brush it along the wood grains to avoid scratch.
Please make sure that you have enough sun to dry up the furniture.
Left over water or you left your furniture in wet condition,
It will make water mark/ water spots again.
Mildew may also attack your furniture when it is wet and dirty.
Mildew and water spot is easy to be removed by using soap water.

When teak start to change color to become patina grey,
Teak oil will no longer stain your cushion and make water spots.
Teak stain, water spots and mildew is not covered by our warranty.

If you do not like the furniture change color, you can use teak protection.
Some teak protection / teak shield will protect your furniture from ketchup, red wine or salad oils to penetrate in to the wood, meanwhile the shield will also prevent teak oil to stain your cushions and sling.
You can find teak protection in the internet easily.
Regular cleaning will make the weathering process change color uniformly.

Checking / Hair cracks.

During weathering process you may also notice some “ checking “ or hair cracks on your furniture, especially on big /thick components or on joints.
Checking is quiet normal on wood when it is left outdoor.
Since wood is alive, it will shrink and contract during weathering process.
Checking is only cosmetic, it will not affect any structural joint or construction strength on the furniture.
Checking is not covered by our warranty.

On some cases you will also notice that the wood fiber is raised in the corner / edges.
It makes the surface rough.
Wood fiber will rise when the wood is getting wet.
It will be smooth again during weathering process.

Stainless steel Furniture.

Our standard grade of stainless steel furniture is 304. On request we can also produce 316.
Stainless steel 304 is not suitable for direct contact with sea water.
316 / marine grade is more suitable for it.

This following info may be use full for customers to take care of their stainless steel furniture.
1.    Will stainless steel rust?
No. stainless steel 304 and 316 is resistant to corrosion. Only 201 lower grade will rust.
On some event you may see some brown spots on the surface.

This brown spot is not corrosion and it is only on the surface.
Brown spots appear when stainless steel surface
is contaminated with dirt. It is quite normal for some applications.
Brown spot is not covered in our warranty.

You can remove brown spot by using Scotch Brite ®.
Brush the surface along the steel grain to avoid scratch.

Never use chemical abrasive to clean up your stainless steel furniture since chemical will make corrosion.
Use only clean soap water with soft sponge.

Stainless steel cleaner will also be use full to protect the surface from finger print and brown spots.
Regular cleaning of your furniture will keep them as new.

Woven Furniture.

Our standard synthetic rattan is Viro® and Rehau®.
The framing will be aluminum powder coated.
We can also combine stainless steel or teak wood with wicker.


Our standard cushion is Sunbrella® fabric and quick dry foam.
We may combine quick dry foam with Local outdoor fabric based on customer request.
Please follow instruction from the manufacturer to maintain your fabric. eg ; www.Sunbrella.com
We cannot give warranty on cushions materials.
Please choose the suitable brand for your applications or consult with us.


Our standard sling is Batyline®
On request we can also produce sling furniture made from Textilene® or china / local brands sling.

PT. Evoline Furniture Industry

Ds. Sumokembangsri Balong Bendo.

Sidoarjo - Jawa Timur
Phone : +62-31-8709156
Fax : +62-31-8709156

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

About Evoline Furniture Industry

Started in 2005, as CV. Golden furniture, we produced mainly teak furniture for a Danish company.
Premium teak is our strong heritage, as teak has been our daily production activity for many years.