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Date & Time in Bali

CURRENT LOCAL DATE AND TIME IN BALI:

Sunday, 16th December 2018
2:59:43 am

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DID YOU KNOW............

There is a huge misunderstanding about the termite resistance of Indonesian tropical hardwood. Among the tens of hardwood species available in Indonesia used for wooden house building there are only 4 hardwood species available which can be considered partly termite resistant, viz; Bojonegoro Teak (Djati teak), Iron wood, Merbau and Bangkirai, of which only Merbau and Bangkirai (*) are commonly used for wooden prefab house building when termite resistance is a prerequisite. However, the misconception is that only the core part (called heartwood) of the tree is termite resistant, the outer part of the tree, called sap wood, is NOT termite resistant.  In conclusion: Your wooden house will NOT be termite resistant when building with a mix of sap wood and heartwood. P.T. BALI PREFABWORLD carefully only selects the heartwood from its supplier to fabricate its wooden homes which need to be absolutely termite resistant. Since drywood termites are considered far less dangerous than subterranean termites and very easy to detect and destroy we will concentrate on the subterranean termites. If interested you may read more about these termites and our in-house developed guaranteed hardwood protection by browsing down this page.
  
(*) Bojonegoro Teak is far too expensive and Iron wood is prohibited from being exported.

We may help you with your decision which build option is most effective for you to avoid termite attacks to your prefab home. You may download an instruction manual under the paragraph "HOW TO IDENTIFY...."  (browse down).    


This unit was prefabricated by us for the Red frog bungalow resort in Panama in 2007, The requirement was "absolutely termite resistant". As of today not one termite has attacked the wood, proving that our anti-termite system works and is reliable. We would be happy to provide you a reference and that's why we are not afraid being the only wooden prefab house company in Indonesia to issue a warranty on our product.  
 

Panama-P 1

 

Anti-termite protection as has been developed by our company over the years

All of premium and superior build houses will be protected against termite attacks based on a secretly developed method applied by our company, known by our company only. This application will be used for all wood parts in contact with or close contact to natural grade (the termite's attacking habitat). This is our standard method whether or not in combination with termite resistant wood and/or the use of termite barriers. The treatment is also extremely efficient on the drywood termite, Formosa termite, powder post beetle, woodworm and parasites. Though the system will only be appplied to our Premium and Superior build options, we can also apply the same method to our standard build units against a variation order. To support our termite warranty claim we will provide the reference of our project built in Panama in 2007 in a termite infested area, whereas until date not one termite has attacked our Bangkirai wood. Contact us for the reference. 

We have a proper and effective solution for our clients in the Northern territory of Australia where the dangerous Mastotermes flourishes. 

WE WILL ISSUE A CONDITIONAL (*) WARRANTY THAT OUR WOOD WILL NOT BE ATTACKED BY TERMITES

(*) Under the condition that the owner shall maintain the wood of his unit in accordance with the maintenance specifications issued by our company, which mainly comprise the preparation of regular inspection reports in accordance with our format along with pictures.        

  

You may download the rest of this page using your log-in download code  Donwload-this-article-button

There are approximately 2,600 species of termites worldwide. Most live in tropical and subtropical regions of the world. Others live in temperate regions of the world. There are many people who think termites are white ants.  They are not!  Termites are an ancient insect order.  Their roots go back more than 180 million years.  Termites belong to the group of insects called Isoptera.  This term is Latin and refers to the fact that termites have 2 sets of wings that look very much alike.  Features that help to differentiate termites from ants include termites having straight, flexible antennae and a broad waist while ants have elbowed antennae and a narrow waist

TRIVIA

They say that termites can eat thru concrete. False or true?

No, they cannot eat through concrete. However, the issue is that no matter how well poured, concrete will crack as it settles. When poured around plumbing, it will retract or shrink from around the pipes. In slab construction there is a bath trap which essentially is a large square of dirt under a bathtub that is often unseen until it is too late.
Termites need the thickness of two sheets of paper or a business card to enter a building. This is not much! Often times, these cracks are hidden by carpeting, flooring and even walls.


The picture on the right side shows the actual sizes of termites with the queen in a termite colony....Yes they are that small and the queen that big. Click on the picture for an enlargement

Queen-termite-in-colony full-size

Can termites eat thru steel?

In fact they cannot eat thru steel. Steel is impervious to termites, but if the steel sheets are clad with gyprock or other easy to eat materials the termites will consume the paper on the back of this gyprock or cladding material. The acrid (waste product) faeces expelled on to a steel sheet, steel frame or steel sheathing can react to cause the steel to corrode. Once a steel surface is corroded it is easy, in particular for the Formosa termite, to go thru and reach the wood they are after. Conclusion: Steel is not termite proof but termite resistant

Do termites eat electrical cables?

Termites have been known to eat through plastic water pipes, lead batteries, car tyres and even billiard balls, so it’s no surprise that – despite providing no nutrition whatsoever – electrical, telephone and data cabling is also often on the menu. The use of traditional physical barriers, such as brass taping or nylon jackets as a cabling defence against termites for exterior cabling is highly receommended. Nylon is too hard for a termite to chew through, yet flexible enough to be wound and manipulated into required space. Depending on its purpose, some cables will need additional layers added, such as armouring for mechanical protection, or nylon.

Is all tropical Indonesian hardwood 100% termite resistant? 

NO, by far.....there are only a few Indonesian hardwood species which are "more or less" termite resistant.  Refer to the above underneath: 'Did you know".  Despite claims of most, - if not all -, other companies that Merbau and Bangkirai is 100% termite resistant IT IS NOT, since in most cases a mix of sap wood and heartwood is used.  Only the use of sole <heartwood> gives full protection. The outlines and explanations in the paragraphs below will give an unambigious answer to this question. 

HOW TO IDENTIFY.....

HOW TO IDENTIFY WHICH BUILD OPTION I NEED (basic, standard, premium or superior) TO DEAL WITH TERMITES. CLICK <here> TO DOWNLOAD THE SUPPORTING MANUAL  

 

 ABSTRACT

There are only a few wood species available in the world which are 100% guaranteed termite resistant. These wood species can only be found in Africa and South America, but definitely NOT in Indonesia, however, there are a few Indonesian hardwood wood species which will give some protection when the proper part of the tree is used (the core or "heart"). There is only one wood species in Indonesia which have a core so dense and hard that termites can't eat it. This species is Bangkirai. Close followers are Bojonegoro Teak, Merbau and Iron wood. However, as is the case with all trees the outer rings (called sap wood) are soft or softer than the core (heartwood). As a result termites attack this juicier and softer sapwood. A mix of heartwood and sap wood shall therefore not be considered "termite resistant". Our company only uses genuine Bangkirai "heartwood", which is guaranteed 100% termite resistant. The client may decide whether or not to use a combination with a termi mesh, and/or a wood treatment and a mix of sap wood and heartwood, a cheaper, but definitely not the safest solution.  

 

 ADDITIONAL INFORMATION

FOR THOSE WHO WANT TO KNOW MORE ABOUT TERMITES, THEIR HABITAT, THE DANGERS, TREATMENTS AND PROTECTION

What is a termite

There are about 2,600 species of termites, whereas the most notorious are the carpenter ants and the Formosa termites, the latter most dangerous and damaging.
Most termites (*) attack from natural grade. Only the drywood termite is able to nest in ceilings and roofs. Flying termites are visible when their colony swarms which are provoked by heavy rainfall and warm, humid temperatures among other triggers. Swarms occur when established colonies produce winged male and female termites in order to reproduce. After these mating flights, fertilized termites shed their wings and go on to establish new colonies underground. However, termites seen flying in a home are indicative of a mature colony which may sooner or later attack the wooden parts of your house from ground floor to natural grade. If unnoticed they may creep up into your roof and roof trusses.

(*) The common name "white ants" is a very poor choice, since termites are not ants and have been shown to be more closley related to cockroaches

Winged-termite

Winged termites

Termites and hardwood

There are only a few wood species available in the world which are 100% guaranteed termite resistant. These wood species can only be found in Africa and South America, but definitely NOT in Indonesia, however, there are a few Indonesian hardwood wood species which will give some protection when the proper part of the tree is used (the core or "heart").
Termites eat the cellulose from the wood cells. The harder these cells the less interested they are in their dinner. Any tree has a core called heartwood. This is the hardest part of a tree. There is only one wood species in Indonesia which have a core so dense and hard that termites can't eat it. This species is Bangkirai. Close followers are Bojonegoro Teak, Merbau and Iron wood.

 Timber-trunk

However, as is the case with all trees the outer rings (called sap wood) are soft or softer than the core (heartwood). As a result termites do not attack Bangkirai heartwood and in a lesser extend the heartwood from the other species mentioned, however, the termites attack the juicier and softer sapwood. The solution would be that we only buy heartwood from our suppliers, however, so unfortunate, this is merely a mission impossible, since the suppliers do not want to be left with only a stock of sap wood.

As such the suppliers mix the wood in portions of heartwood and sapwood, or will ask a 30% higher price for heartwood only. In conclusion we cannot guarantee that all the wood that we use is not susceptible to termite attacks whether it is Bangkirai, Teak, Merbau or Iron wood.

HOWEVER,....................

That was the bad news. There is also good news. When the mixed wood of one of the above mentioned wood species is used in combination with a termimesh system or a termite barrier you will be much safer for many, many years to come, whereas a combination with Bangkirai heartwood for the lower parts of the unit (from natural garde up to and including the groudn floor) is the best option. For those who have the budget available we offer the grandeur solution (see bottom of this page marked in orange).

Termite-mudding-1

 Termite-mudding-2

Termite mudding. If you see this: you have termites !!!!!!  Time to act quickly........

Fact

Most Indonesian wooden prefab house manufacturers state on their web sites that Bangkirai and Merbau are documented to absolutely termite resistant. We are of the believe that these companies should do their home work again and shall carefully read what is written in the following laboratory reports:  
J. Kenneth Crave and Carrie H.M. Tome from the University of Hawaii evaluated the resistance of Indonesian Bangkirai to the attack of the  dangerous Formosa termite. Their investigation revealed that "as with all durable tree species only the heartwood and not the sapwood of these species is reputed to be durable". See page 504, 2nd paragraph of their report which can be downloaded via https://www.ctahr.hawaii.edu/gracek/pdfs/212.pdf  This report supports our claim that the only termite resistant part of Bangkirai is heartwood and not sapwood.
A technical data sheet from the Australian timber base sheds some light on the termite resistance of Merbau and can be found at https://www.timber.net.au/?option=com_species&name=Merbau&Itemid=441  This article clearly indicates that only Merbau heartwood is termite resistant.

Conclusion

Based on the above, claiming that a wooden house built from Bangkirai or Merbau is 100% termite resistant is an untrue and deceiving statement, since not one supplier will supply heartwood only, hence they supply a mix of sapwood (very termite sensitive) and heartwood (not susceptible to termite attacks). As a result the house is built with this mix of sapwood and heartwood and thus.....not 100% termite resistant      
Main conclusion: One shall not automatically believe that a house built from Indonesian hardwood is 100% safe to termite attacks, at least we are not promoting this. By ruling out the extremely expensive Bojonegoro Teak and the fact that Iron wood is prohibited from being exported, Bangkirai or Merbau heartwood in combination with a termimesh system or a termite barrier application will give a fair, but not failsafe protection. Our statement that Bangkirai and Merbau sapwood is not termite resistant is therefore fully underlined by the above articles.

 termites-eating-sap-wood

 Termites eating sap wood (the yellow part). The red part is heartwood

What if you would not like to spend a lot of money to termite resistant hardwood?

There are a few solutions to apply a less costly system whether or not in combination with termite resistant hardwood. These systems will depend on your needs, whereas you may need to accept some esthetically less attractive alternatives. If you wish to read more abolut these systems click <here>      

 

Reviews from Bali Prefab World

"Bali Prefab World is doing an excellent job of modeling the 3-D frame structure in STAAD and now analyzing the individual members to ensure that they are not overstressed. I have just completed a review of the column analysis for the primary columns supporting the roof, and it is well presented and clearly shows the members are adequate size. This type of analysis would not have been possible by hand calculation because of the complexity of the roof structure. Job well done Bali Prefab World".
Review from: Professor Ian Robertson, University of Hawaii
Project: 400 m2 dwelling for Maui
Date: 12-06-2012.
Rating: 5 out of 5.

Read more testimonials from Bali Prefab World: click here
Dear Visitor, In order to show proof and evidence that these testimonials are genuine you may send us an e-mail with a request to provide the e-mail address of the publisher of the testimonial. We will forthwith send you the information so that you can contact the person.
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