Also frequencely need to go roof top to spray...

my worker apply the chemical to all timber roof trusses and paint a coat of solvent base sealer the next day, hopefully can last for few year

what the name of those? I believe I could DIY instead of asking them 

u can google it mar.......the perforated pvc pipe wrap with geo-textile to avoid those small holes clog up by soil.

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every 3 ft one pipe punch in to soil about 2ft depth. for existing slab, my worker drill the floor concrete with 32mm drill pit

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it should go up to the upper floor also ? i thought we need to do it for the ground floor only ? hmm in that case what happen to my existing parque on top floor ? also need to hack ??? and top up chemical at upper floor ? my boss told me only top up at car porch there ??

NLC termguard, cost a bomb. i have a bungalow project use their system.

the piping in my house reno was done by my indon, in fact any plumber also can do it, drill holes surrounding the house, insert perforated pvc piping with end cap, wrap with geo-textile and connect to each other from front to back.

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i replace tiles for the whole house
the conceal piping buried under the floor tiles actually serve the same function as u mention above, only difference is my floor tiles not need to drill in future, and i won't have those chemical smell inside the house when i recharge it every 2 years.

and u need a pump to inject the chemical as else the front part will only get it but not those at the back????

I used Aneka Pest Control (not a famous name)...they did the drilling method as well..and spray onto roof trusts
he used imidacloprid...not sure good or not..but i paid RM1,600 for the service..

Thanks Coconutzz, RM1600 is quite expensive for termite treatment. How big is your house?

oh no! i renovated my apartment and totally forgot about termites problem. i heard few units had been attacked too