who is mark porter? - qbcc.qld.gov.au · accordance with australian standard 3660.1‐2014 there...
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Who is Mark Porter?
Environpest Termite Consultants39 Years termite experienceBuilder’s son & ConcretorPest controller and Fumigator (Ships, buildings, aircraft, perishables etc)Committee Member – Master Builders Qld Institute of Building ConsultantsCommittee Member – Master Builders Qld Technical CommitteeCommittee Member – Australian Standards Committee BD‐074 ‐ TermitesCommittee Member – Australian Standards Committee BD‐085 – InspectionsAustralian Standards positions for Master Builders Australia – CanberraSpeaker – Termite Working Group 2001 Qld only Building Code AmendmentsExpert witness in termite matters
Uni Q/CSIRO Joint Project – St Lucia
Old Police Barracks – Petrie Terrace
Griffith Uni Oral Medicine Gold Coast Hospital
Old Parliament House
Macarthur Chambers
Howard Smith Wharves
Drywood termite fumigation CBD Brisbane
The Enemy
Schedorhinotermes spp soldier
The REAL Enemy
Schedorhinotermes spp worker
Don’t panic!
Subterranean termites take roughly 12 months to do serious economic damage.You have time to make INFORMED decisions!
Builder’s obligations ‐ termites
National Construction CodeVolume II Part 3.1.3Termite Risk ManagementIncl Qld only amendmentsPrimary Building Elements50 year design life
Builder’s obligations ‐ termites
Builder’s obligations ‐ termites
Builder’s obligations ‐ termites
Builder’s obligations ‐ termites
AS 3660.1‐2014 Termite managementPart 1: New building workThe relevant Australian Standard for new building work
Builder’s obligations ‐ termites
AS 3660.3‐2014 Termite managementPart 3: Assessment criteria for termite management systems
Concrete slab as part of the termite barriers
If you want to use the concrete slab as part of the termite barriers at a home, the slab must comply with AS 2870‐2011 or AS 3600‐2009
Concrete “wetting up”
Concrete compaction
Concrete compaction (poor)
Concrete shrinkage
Concrete shrinkage is typically 1mm per metre over time. The termite barriers must be flexible to deal with that expected building movement.
Termite dimensions
Older Chemical termite barriers = 1 metreModern chemical termite barriers = 10mmPhysical or chemical sheet termite barriers = 1mm
Termite entry points – Brick veneer
Older chemical termite barriers
AldrinChlordaneDieldrinHeptachlor
Older chemical termite barriers
They won’t be back!They last 30 to 35 years. Economic building life = 50 yearsStored in body fats 15 years plusThey also pass through the food chain.
Modern chemical termite barriersAltrisetBiflexChlorpyrifosPremiseTermidor
Modern chemical termite barriersLabelled expected protectionAltriset = up to 8 yearsBiflex = up to at least 10 yearsChlorpyrifos = 5 & 10 yearsPremise = up to 5 yearsTermidor = at least 8 years(South of Tropic of Capricorn)
Modern chemical termite barriersOf all the modern termiticides, Termidor seems to be delivering the best results. It’s stable, and largely un‐affected by moisture. It’s non‐repellent to termites, and is aggressive towards the termite nests.
Modern chemical termite barriers
In some sensitive applications, Altriset can be appropriate. It has NO personal protection requirements for pest control technicians or building occupants. It’s insect specific.
Modern chemical termite barriers
They ALL need a reticulation system to allow replenishment to comply with the 50 year design life requirement.They ALL have an ongoing maintenance cost for the home owner.
Reticulation system
14 psi maximum working pressure
Reticulation system
100 psi working pressure
Geotextile fabric
Physical & chemical sheet termite barriers
Ensystex Trithor FMC HomeguardKordonPlasmiteTermimesh
Physical & chemical sheet termite barriers
Graded material (granite or glass) with a strip shielding
Physical & chemical sheet termite barriers
50 year (economic life of building) design lives, with NOongoing replenishments required by the home owner. Annual timber pest inspections still appropriate and required.
Integration of termite protection systems
You can use a multitude of different termite protection systems, but the builder takes overall responsibility for the whole termite protection system, with no effective time limit on that responsibility.
Limiting consequences of termite attack
Think about recommending termite resistant framing to your clients. (Naturally termite resistant timber, treated timber, or steel).
Limiting consequences of termite attack
Limiting consequences of termite attack
Cut ends T2 treated timber
Limiting consequences of termite attack
If your client accepts your recommendation to install termite resistant framing, and termites were to occur, the termite damage is limited. Your clients pay you to limit your liability.
Limiting consequences of termite attack
Recommend termite resistant window reveals and door jambs, and termite susceptiblearchitraves and skirtings. An inbuilt “early warning” system for termites.
Builder’s obligations ‐ Handover
Termite protection certificatesWarranty documentsDurable notices (to both the kitchen cupboard and the electricity meter box)
Builder’s obligations ‐ Renovations
If you’re renovating or extending, and you’re building over or installing a hard cover (slab/paving etc) over a termite protected area, YOU OWN WHAT’s UNDER IT.
Expert Witness
Defintion: An expert witness, professional witness, or judicial expert is a witness, who by virtue of education, training, skill, or experience, is believed to have expertise and specialised knowledge in a particular subject beyond that of the average person, sufficient that others may officially and legally rely upon the witness's specialised (scientific, technical or other) opinion about an evidence or fact issue within the scope of his expertise, referred to as the expert opinion, as an assistance to the fact finder.(Federal Rule of Evidence 702, 2000)
Expert Witness
The duty of an expert witness is to assist the Court, regardless of who is paying their bills. Independence plus honesty plus fairness = Credibility
What constitutes a termite dispute?
A really simple test in relation to the integrity of a termite protection system is: Can termites gain hidden access to the building?
What constitutes a termite dispute?
The next question is: Is there anything the home owners have done to assist hidden termite access? If they haven’t, and termites have accessed the home, it’s typically a builder’s problem.
What constitutes a termite dispute?
The next question if the issue looks like being attributed to the builder is: Have the annual timber pest inspections been carried out?
What constitutes a termite dispute?
If termite damage is consistent with more than 12 months termite activity, and no inspections have been carried out, the builder’s exposure may be lessened, but not completely alleviated.
What constitutes a termite dispute?
Weep hole compromised by external slab laid by the builder
DEFECT
What constitutes a termite dispute?
Physical termite barrier. 75mm inspection zone not achieved, but not compromised.
TECHNICALDEFECT
NO ACTION REQUIRED
What constitutes a termite dispute?
What constitutes a termite dispute? With an Australian Standard and termite barrier warranty compliant system, termites can freely access the cavity and brick cores immediately below the termite barrier, within the 75mm inspection zone.
What constitutes a termite dispute?
All the Australian Standard compliant termite barrier systems are designed to prevent HIDDEN termite access to homes!
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
What constitutes a termite dispute?
DEFECT
Termite barrier de‐laminating
Possible with any laminated termite barrier
Termite barrier issues – repellency?
Termite barrier issues – render detail
Termite barrier issues
Termiticide all through termite barrier
Termite barrier issues – Graded glass
Termite barrier stainless mesh corrosion
Termite barrier issues ‐ aluminium siliconed
Termite barrier issues plastic strip shielding
Termite barrier issue ‐ Too light to be durable?
Termite barrier issues – Installation
Termite barrier issues ‐ Slab penetration
Termite barrier issues ‐ Slab penetration
Termite barrier issues – Post clearance
Termite barrier issues – Ant capping
Render over exposed slab edge
Termite barrier issues – Ant capping
Termite barrier issues – Excess mortar
Termite barrier issues – Slab/footing joint fail
Termite barrier issues – Cracked footing
Termite barrier issues – Footing join
Termite barrier issues – Foam in slab
Termite barrier issues – Tree root
Codemark – Can we trust it?
Summary
So what do you need to do?
Summary
Lay slabs in accordance with Australian Standard 2870‐2011Install termite barriers in accordance with Australian Standard 3660.1‐2014There are NO shortcuts!
Summary: Right way v Wrong way
The difference between doing something right and wrong is usually not much more than a bit of thought, and an attention to detail.
Summary: Right way v Wrong way
If there’s a cost in doing something right, you’ve only got to explain the issue to your clients properly, and they’ll be falling over themselves to pay you to do it properly!
Summary: Right way v Wrong way
Head down a right road, and you’ll be so busy with work being referred to you, you’ll never be out of work for the rest of your life!
Summary: Right way v Wrong way
Head down the wrong road in the termite issue, and there’s a very good chance we’ll meet again. Quite likely in the Queensland Civil & Administrative Tribunal (QCAT).
Summary: Right way v Wrong way
The purpose of tonight’s presentation is to show you a way through the termite issue, so that you should never be before the courts.
Question and answer session
I hope you’ve enjoyed this presentation.
Thank you very much for having me!
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