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Friday, 30th October 2020
7:42:19 am

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When driving nails in hardwood you may experience the misfortune of having a large crack appear, or even a piece of your timber break out at an edge. In addition any nail driven in hardwood will set due to high friction caused by the wood cells around the driven nail (similar to the build-up up of friction when you drive a pile in the subsoil). The resistance of the nail shank to withdrawal for a piece of hardwood is therefore very high and needs a lot of force to take out. So, you may wonder what will happen if nails are used to connect prefabricated hardwood parts which need to be taken out during the dismantling process:           

    Driven-nail-1 This will happen: And that is the main reason that we do not use any nail in our hardwood prefab structures. Ther are a few solutions to solev cracking, however, these are time consuming, expensive and do not guarantee an undamaged connection.

 Remedies may be:

 Dot-1 Dip the the nail in petroleum jelly (*), which reduces the friction of the driving process, and can decrease the probability of the wood splitting.
(*) Some wood species will show ugly black stains after an application with petroleum.

 Dot-1 Pre-drill a hole slightly smaller than the nail's shaft diameter. This will reduce the pressure of the nail penetration and shafty friction without decreasing the nail's grip on the wood.

 Dot-1 Use the smallest diameter nail which will do the job, however, this can only be done when these ugly steel connector plates will be used and tens of nails be driven thru the plate holes.
 Dot-1 Blunt the point of the nail with the hammer. This is done by placing the nail on a hard surface with the point facing up, and tapping the sharp end with a hammer. The nail will then cut its way through the wood grain, rather than wedging a pathway. Though this puts all the material displacement along a single plain, rather than dispersing it all around the point of the nail.
 Dot-1 Where end nailing is necessary, angle the nail so that it can be started farther away from the end, but the nail will still get a bite into the other wood part it is being nailed to.
 Dot-1 Back any nail out if a crack begins to appear while driving it. A tiny crack is a sure indication the wood will split if you continue. 

After having read the above you will certainly agree with us that it is a much better method not to use nails, but pre-drilled screws or treads as to avoid that cracks occur or parts will split or break off, which is so often the case when nails in hardwood are used.   

Reviews from Bali Prefab World

"We ordered a 180 m2 unit from P.T. Bali Prefabworld late 2015 to serve as a mock-up model for New Caledonia . We unexpectedly visited the yard of Bali Prefabworld 2 times as to check the progress and verify the quality. We were stunned........ It was exactly what they promised us to build: Top, top, top quality. This undoubtedly showed their high professionalism. Before we ordered the unit with Bali Prefabworld we had visited a number of other prefab wooden house companies in Bali but those were either non-responsive, or were building something we did not like at all; cheap materials and not according to proper workmanship. We have meanwhile ordered 2 more large units from P.T. Bali Prefabworld and will order more in the future. We strongly recommend this company to anybody intending to buy a wooden prefab house. We would be happy to answer all of your questions and share with you our experience". 

Review from: Mr. Olivier Pham, Noumea, New Caledonia

Project: Building wooden prefab house for New Caledonia
Date: 20-07-2016
Rating: 5 out of 5

Read more testimonials from Bali Prefab World: click here
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