On 13/03/2019 20:49, Mathew Newton wrote:
Just taken delivery of a number of Celotex GA4000 PIR insulation boards and, as shown in the photo below, the 100mm boards in the foreground are extremely wrinkled one foil face, particularly when compared with the completely smooth 30mm and 12mm boards in the background:
http://www.newtonnet.co.uk/permanent/celotex.jpg
The 100mm boards also have an ever so slight bow to them; not enough to cause me an issue but I wondered if the bowing and wrinkles were the result of differential shrinkage within the core?
Any cause for concern?
been left out in the cold thats all.
delta expansion coefficients
--
it should be clear by now to everyone that activist environmentalism
(or environmental activism) is becoming a general ideology about humans,
about their freedom, about the relationship between the individual and
the state, and about the manipulation of people under the guise of a
'noble' idea. It is not an honest pursuit of 'sustainable development,'
a matter of elementary environmental protection, or a search for
rational mechanisms designed to achieve a healthy environment. Yet
things do occur that make you shake your head and remind yourself that
you live neither in Joseph Stalins Communist era, nor in the Orwellian
utopia of 1984.
Vaclav Klaus