There are two categories of termite barriers;
1) Physical Barrier
Physical barrier is typically installed during the structure of a new building. There are little products in the advertise for the fitting of this type of barriers. One of the most accepted ones is Kordon from BAYER. It looks like a thick orange plastic that we fix under slab, among the cavity walls, around the dispersion and during the gaps where termite’s maybe finding their way inside a home hidden. The material has got insecticide built into it, so any termites come in contact with it will die immediately. It lasts many decades if installed properly and it will decrease the chance of termite swarm appreciably.
The other produce is termites. It is made of stainless steel so termites cannot chew during it. The benefit of termites is that there are no insecticides concerned. It is a simple physical barrier providing resistance against any termite diffusion.
Granitgard is also an additional physical termite barrier in Sydney where there are no insecticides concerned. It is made of a sandy looking material where termites cannot go through as the sands are too small for them to tunnel through. They cannot move them either as the product is too serious for them to hold or shift.
Physical Barrier involves in preventing invisible termite entries by blocking their path into your home. As mentioned before physical barriers are usually installed during the structure of a building.
2) Compound Barrier
As the name implies, compound barrier involves mixing the soil with chemicals so termites will get impure when they come in stroke with them. It is an ideal barrier for accessible homes and it can defend homes against termites for up to 10 years depending on the creation and the special treatment.
There are two types of chemicals used when applying termite barriers in Sydney.
Repellent chemicals are cheaper and more poisonous to other animals than the non repellent ones. As almost immediately as termites come in contact with them, they will sense the fatal and expire. Other termites will then evade that area. If a barrier is laid completely, then termites cannot go through it. Sometimes gaps appear in some barriers. If that is the case, termites maybe able to bridge the barrier and go into your home.
Non revolting chemicals are more expensive but less toxic to other animals including humans. They also have a deferred involve properties. If termites come in contact with them, they will not notice any fatal and as a consequence of delayed affect, they will have time to pass the poison to the other members of the colony. Even if there are some gaps in the termite barrier region chances are that termites encounter the treated area sooner or later. This is why I always use non disgusting chemical when it comes to installing an obstruction.
If your home is built on a slab, Perimeter barrier is the favored technique of termite defense. We drill 4 holes per meter and insert chemicals under the block. In some area where trenching is appropriate, we flood the channel and put the soil back.
Some homes are built on brick piers and frequently there is an access to the subfloor. In these cases Subfloor chemical treatment is a perfect termite barrier against subterranean termites.
And lastly we sometimes establish termite barriers in homes with together subfloor and an addition on slab. In that case the mixture of the subfloor termite barrier and border barrier is the best way to defend homes against subterranean termites.