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PLUMBING CONNECTION
WINTER 2015 29
∫
ACCEPTANCE OF PRESSURE FLASHINGS
Pressure flashings may be used in lieu of cutting grooves
into walls, provided they are used only with smooth surface
finished walls, e.g. smooth finished concrete or smooth
finished brickwork with flush pointed mortar courses. It
is also noted that collar or penetration flashings are to
be constructed with up-stands of not less than 100 mm
with baseplates appropriately fastened and sealed to roof
surfaces.
∫
SLIP, SLOP, SLAP – AND BE CAREFUL
It has been found that certain sunscreens containing semi-
conducting metal oxides such as titanium dioxide (TiO2) and
zinc oxide (ZnO) and these can accelerate the degradation of
organic materials, including paint systems and care should
be taken with their use. Lookout for a Zincalume ‘friendly’
sunscreen at your supplier store, it’s not a gimmick.
We recommend you get hold of a copy of HB 39, it’s a
worthy reference.
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FAIR SUCK OF THE SAUCE BOTTLE SAI GLOBAL!
Normally in a space like this we’d publish the cover
of the document we are referring to and perhaps a
page or two from inside – to give readers an idea of
the document layout and encourage them to consider
buying the document.
However, as SAI Global has the marketing rights
to HB-39 (the end result of a lot of industry people
putting their own time into the document) and all other
Standards documents, they want to charge us a fee for
using those pages – even in a thumbnail (illegible) size.
Thanks but no thanks SAI Global – on principal we
refuse to pay for the publishing ‘privilege’.
And isn’t it lovely for them to say thank you to us for
doing their marketing… the world has to change and
commonsense restored.