Saturday, Jul 13, 2013 at 09:19
The Bostic Polyeurathane is..from memory sold under the brand " Bostic Gold".
All the usual suspects, like Selleys also market a polyU sealer these days.
Read the tube, if it is a polyeurathane sealer it will say so on the tube.
Sica, without doubt are one of the top polyU sealer brands and the make a range of PolyU sealers ranging from a fairly basic construction industry sealer up to some very high spec quite expensive sealers for marine & automotive industries.
In the past they only made high end sealers....be aware these days they market a full range of sealers right down to ya "no more gaps" style acrilic painters sealers
So read the tube and make sure you know what you are buying.
For ya trailer, a basic construction grade polyU sealer should be adequate...particularly if you are going to paint over it.
If it is going to be permanently weather exposed or used in ya bathroom and not painted over, best to spend up and go with the marine grade Sicaflex.
It resists the weather and UV better and does not go mouldy any where near as fast as nearly anything else.
OH.
two things with Poly U sealers.....
They are a quite a lot stiffer than most other sealers, SO cheap cauking gins will not do....ya need a good strong frame and trigger assembly.....I've had good results with the yellow frame dripless guns.
Poly U sealer goes off far more surely than silicon even in the tube......SO
Get ya job worked out and plan to do as much of the job as you can in one go.
If you have sealer left in the gun....seal the end up as
well as you can....stuffing a screw down the end is just not good enough.
Sealing up and storing in the fridge delays the tube going off
BUT once open, a tube of this stuff will go off sure as eggs.
A good reason to only buy fresh stuff from a high turnover supplier.
hope this helps.
cheers
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