Wednesday, January 29, 2014

Farm Bill may be the best chance for legalizing industrial hemp production, proponents say

By Tim Thornberry
Source: kyforward.com

For nearly two years negotiations have been going on in some form or another over a new farm bill. The current bill actually expired last year with an extension passed to keep things rolling.
 
That in itself may not be unusual; most farm bills take more than one try to get passed. This one has been batted around a little more, perhaps, but appears to be on the brink of passage.
 
While the bill’s nutrition programs and dairy title have grabbed the headlines, there is an amendment tucked away in the House version of the bill that could mean hemp production will again be a reality in Kentucky, the state that once led the nation in growing industrial hemp.
 
Kentucky Congressman Thomas Massie (R-Ky.) introduced the amendment along with Reps. Jared Polis (D-Colo.), and Earl Blumenauer (D-Ore.). Massie said in an earlier interview he feels confident the amendment will survive any farm bill negotiations between the U.S. House and Senate needed to pass the legislation.
 
“We’ve got Sen. (Mitch) McConnell in the Senate and he’s been very supportive of industrial hemp for Kentucky, so I’m optimistic and hopeful that the compromised version of the bill we end up voting on will contain the hemp amendment,” said Massie.
 
While many efforts have been made in the past to get similar legislation passed, this farm bill may be the best chance hemp has had in quite some time.
 
Joe Cain, Kentucky Farm Bureau’s director of national affairs and political education, has watched nearly every step of negotiations and said he hasn’t heard anything as to whether that amendment will stay.
 
“That’s not really been anything that’s been talked about in the details. They’ve talked a ton about the nutrition program and dairy, and they’ve talked a little bit about the planted verses base acres and a little about conservation program as well as about how Permanent Law would be handled,” he said. “There are several things that haven’t been publically talked about.” 

 
But Kentucky’s Hemp Commission members have been talking about it. The last meeting of the group in 2013 proved to be a spirited debate of how to proceed, pending government approval.
 
Brian Furnish, commission chair said passage of an amendment in the Farm bill would be the clearest way to know that it would be law.
 
“The way I look at it, for the long-term future of a new crop, preferably, Congress would put it into the bill so there would be no questions or gray areas,” he said.
 
A statement from the Justice Department that said that states passing such legislation would be in charge of enforcing regulations did not clear up the subject of growing hemp, Furnish added.
 
“In my mind, it would just be better if Congress voted for something and have it in place,” he said.
 
Furnish noted that the amendment introduced by Massie passed the full House in a standalone vote, something that was very important.
 
“It’s very good for what we are trying to do and now it’s up to the Senate to come forward with a version or agree in conference committee with the amendment or change it around a little bit,” he said.
 
Furnish said he would like to see changes in the amendment, as well. Currently, it calls for universities and colleges to grow it and conduct research on the crop in states that have already passed legislation allowing it. Kentucky passed such legislation last year but only in the event the federal government allows it. (See KyForward story here.)
 
Furnish would like to see some farms with the ability to raise it in order for hemp industries to a good start in the state.
 
He also said that hemp needs to be taken off the Controlled Substances list because it is not marijuana and let the laws in Kentucky governor the issue.
 
While an economic impact study has been released from the University of Kentucky, the Kentucky and West Virginia Hemp Growers Cooperative Association, along with Patriot Bioenergy Corporation have released their own study by way of a whitepaper highlighting hemp’s potential in the region for energy use.
 
The paper noted that, “By blending coal with biomass materials such as hemp, sulfur emissions from power generation can be reduced and less valuable coal that is high in sulfur can remain competitive.”
 
One of the conclusions listed in the paper stated that, “There is now a solid body of evidence supporting the use of hemp as a feedstock for energy production as well as manufacturing.”
 
The white paper can be accessed by clicking here.
 
Tim Thornberry is a freelance writer and photographer who has covered Kentucky agricultural and rural issues for various publications since 1995.

Why is Hemp Illegal?

by Bradley J. Borougerdi
Source: www.hnn.us



Colorado’s recent landmark legislation reflects how popular demand is turning marijuana into big business, and it’s happening at a time when hemp is being touted as the nation’s most promising plant. This should come as no surprise to anyone, as perceptions of the one have been connected to perceptions of the other for quite some time now. After all, marijuana derives from hemp, so the fierce onslaught against the drug that surfaced in the 1930s was bound to have a detrimental impact on the image of the plant as a whole.
Over the past forty years, however, activists have been working to counter these attacks by showing how versatile the hemp plant can be as a medicine, oil, fiber, and recreational intoxicant. Now, armed with new research that significantly undermines the negative associations that have dominated the discourse for so long, advocates for “hemp awareness” have made significant headway in swaying public opinion towards lightening up on the plant -- and in Colorado, outright legalization.
In their efforts, these activists have appealed to a time long past when hemp had an important role to play in the Atlantic world, and in so doing have made claims about the plant -- that it was outlawed due to its potential to eat into profits of William Randolph Hearst and the Du Pont chemical empire -- that are grossly exaggerated. Granted, since the plant has a unique ability to express its genetic code in exceptionally diverse ways, new technological advancements could in fact transform it into a vital commodity for dozens of industries today. However, two hundred years ago, hemp seemed to cause more problems than it solved, and the tendency among activists to simply ignore this or postulate conspiratorial theories to explain why the plant fell out of favor has caused us to overlook the role that culture has played in transforming it from an important strategic commodity into a banned intoxicant over the course of the eighteenth and nineteenth centuries.
Though hemp was first cultivated by humans 12,000 years ago, a good place for our story to begin is in the 1760s, when the British were losing control over some of their American colonies but gaining control over the Indian subcontinent. As the largest maritime imperial power, they needed a lot of rope -- made from hemp -- to rig the ships they were sending to trade and patrol in every corner of the world. However, the British simply could not produce the high quality hemp stocks that were needed to make rope, which meant that they were forced to import the bulk of it from Russia. Many Parliamentarians considered this a pressing issue, so a series of treatises emerged on both sides of the Atlantic that were designed to motivate the American colonists to cultivate and process hemp into fiber for the sake of the empire. These publications included detailed instructions on the best ways to produce the high grade material, but they were largely unsuccessful in convincing the colonists to abandon their traditional practices. The result was a shortfall in production and a much inferior American product. After their war for independence, Americans still had no desire to adopt the labor-intensive and environmentally-straining method of producing a superior hemp product, so they sought to establish trade relations with the hemp--producing empires (Boston’s Russia Wharf bears testament to this trade). On the other hand, the British continued to search for a colonial outlet through which to promote hemp cultivation.
Their next option was Canada, and for a brief time this worked; but they were never able to obtain anything more than a fraction of what they needed from there to function without Russian imports, so the search continued. After reorienting the empire towards the east, their burgeoning empire in India seemed like the most viable option, but Indians grew hemp for intoxication. The British were vaguely aware of the so-called “Oriental” preparations of hemp before this imperial reorientation, but sources indicate that they were greatly confused about what they actually were, or how they were used. Initially, many thought it was an entirely different plant, but more frequent encounters over the years led most to assume that it was the same plant, only that the degenerate Indians used it improperly. Hoping to use their moral capital to “civilize” the Indians and secure an in-house supply of hemp, the British tried to promote its cultivation there for fiber as well, but the Indians were not inclined to abandon their traditional uses.
The lack of success the British had with promoting hemp cultivation for fiber led them to experiment with plants that Indians already used for such purposes, which turned out to be a success. Indeed, before long, they were importing nearly as much fiber from Indian plants as they were from Russian hemp, which opened the door for them to re-imagine the plant in ways they were previously incapable of doing due to their desperate need for naval stores. Of course, using it for intoxication like the “Asiatics” did was out of the question, so they tried to transform the “deviant” preparations into a useful medicine for the empire (very much like opium was transformed into laudanum, for example). Before long, enthusiastic descriptions of “Indian Hemp” as a panacea for a variety of illnesses started showing up in medical journals all over. The first publication surfaced in Calcutta, but within months, journals in London, Boston, Maryland, Philadelphia, New Orleans, and New York all printed excerpts of the British experiments in India, along with new ones Americans were conducting on their own. Despite all the praise for the new medicine, however, nearly every publication on the subject also included vivid descriptions of the “Oriental” uses, warning of the possible pernicious effects of participating in the “debauch” of hemp intoxication. These warnings became increasingly common as more and more experimenters reported mixed results with the effectiveness of the medical preparations, which often times did not work properly because no one had isolated the psychoactive compounds of the plant and therefore did not really understand its pharmacological properties yet.
By this time, Oriental exoticism had created a deep sense of fascination with the East in the American imagination. It was a place that both attracted and repulsed Americans, and the way they wrote about what had become known by then as “Indian hemp” demonstrates the duality of American Orientalism quite well. Writers such as Bayard Taylor provided vivid descriptions of their experiences with “going native” by using hemp while traveling through the Orient, and the imagery they provided inspired Fitzhugh Ludlow to conduct experiments of his own back in New York. However, the preparation that Ludlow was consuming and wrote about in The Hasheesh Eater (1857) was in fact not the “Oriental” preparation of hemp at all, but rather the medicinally concocted tincture that had been circulating across the Atlantic. After discovering that Taylor’s “hasheesh” derived from the same plant as the medicine Ludlow was consuming, he decided to play up the exotic, foreign qualities in much the same way as the Oriental travel writers did, which complicate the discourse significantly by further blurring the lines between the plant’s medicinal and intoxicating uses. Before long, medical publications such as the Provings of Cannabis Indica (1859) by the American Provers’ Union started citing literary descriptions of hashish “highs” as evidence of the negative effects that the medicine could have on those who used it, which in turn blurred the lines between literature and science.

So, the result was that, by the late 1850s, a sort of negotiation process or struggle for meaning was taking place in regards to the hemp plant as a whole. On the one hand, there was hemp fiber, which started out as an important strategic commodity but was hard to procure, so people started searching for substitutes. This allowed for the medicinal preparations to emerge, which over time proved ineffective and -- most importantly -- never really shed the oriental associations surrounding it. Consequently, hemp for intoxication began to overshadow the other two uses, and as more Westerners experimented with the various preparations and reported the exotic, often-times fantastical effects, the plant as a whole transformed into something they considered useless and dangerous. All of this happened well before the word marijuana entered the English language, which means that hemp was seen as a problem in America well before the rise of Reefer Madness in the 1930s. In fact, it also provides the context needed to understand how and why the entire plant was criminalized. We may be refashioning the meaning of this plant once again -- and perhaps even for good reason -- but that does not mean we should use the present to try to explain the past.

Commentary on the above by Brian:
While I do respect and appreciate an examination of esoteric historical details surrounding the cannabis plant, there are a number of issues that I take with this article. First of all, brief references to key industry players notwithstanding, the article does not adequately represent why hemp was removed from American fields - by the Daniel Act of 1956 - fully two decades after the 1937 instatement of federal marihuana prohibition - which contrary to popular belief did NOT prevent legitimate farmers from legally growing hemp (all mandated taxes having been paid). The early 20th century saw a wave of innovation in the field of hemp processing technology, and with new machines like the decorticator, manufacturing usable fiber became orders of magnitude less labor-intensive - finally hemp could be mass-produced by machine - the industry was primed to explode on American markets. So where did the hemp industry go? For information necessary to put this context into context, the reader should turn his/her attention to "New Billion Dollar Crop", which is an article that Popular Mechanics magazine published in February, 1938 (AFTER federal cannabis prohibition went into effect). In addition to this reference I would have greatly appreciated inclusion into this article of the U.S. Government's "Hemp For Victory" WW2 campaign in which farmers across America were recruited by Uncle Sam into legally growing an illegal drug (the propaganda film explained how to pay the tax).
What we are actually given in this article though, is an idealized historical assessment of the sentiment of the American public toward the cannabis plant, based on their understanding of products it produces. For the most part, the author is correct in his recap of how over time the American public collectively fell out of love with cannabis as a medicinal remedy due to its unpredictability and intoxicating side effects. Absent from the text is any mention of the invention of aspirin and the emergence of the semi-synthetic pharmaceutical industry as a driving force behind the dilapidation of public approval of hemp medicines. However, this entire argument is marginalized by the fact that the public generally was familiar with hemp fiber, and had a significant level of knowledge of Cannabis indica drugs, but was not well-informed that these products were the same as the marijuana whose existence they had been exposed to in sensationalist newspaper articles. After all, it was "marihuana" that was outlawed - not hemp - so the correlation of hemp sentiment to the enactment of its prohibition does not in actuality carry nearly as much weight as the author appears to have intended.
Furthermore, concerning how the American public became aware of medicinal cannabis in the first place, the author's statement, "Of course, using it for intoxication like the 'Asiatics' did was out of the question, so they tried to transform the 'deviant' preparations into a useful medicine for the empire," is both ambiguous and disingenuous, as if had happened by magic. I find this disrespectful to the pivotal work and legacy of Sir William Brooke O'Shaughnessy, who with his cousin Richard in 1840 virtually singlehandedly introduced Indian hemp into western medicine. O'Shaughnessy whose cousin's "first publication surfaced in Calcutta", was researching effective folk medicines which could be cheaply made accessible to the impoverished of his nation (a noble deed indeed) when he came across Cannabis indica and subsequently scientifically demonstrated it to be a useful palliative agent. Perhaps included in the article's short repertoire of proper nouns should have been the O'Shaughnessys' seminal paper, "Case of Tetanus, Cured by a Preparation of Hemp (the Cannabis indica.)" of 1839, which continues to influence cannabis researchers to this very day.
In the end, this article provides very interesting elements of context to the situation of cannabis in the 18th and 19th centuries, was adequately researched, and is a worthwhile read. However, not only is its conclusion visibly rushed, but it fails to acceptably answer the author's own question. I am left with the distinct impression that Borougerdi has "missed the point".


Comment by David Dunn:

Neither the White House nor the Congress has any clue as to how they would deal with a renewable and sustainable product that does not run out. Fossil fuels run out and get more costly to extract. Hence prices rise. Ergo, an inflationary economy. But a sustainable, slower growth economy is something politicians and Wall Streeters do not want to talk about.
Adam Smith, the father of capitalism, protested prohibition. If there's no prohibition then prices would seek their natural level, Smith argued. That strikes fear into the heart of Wall Streeters. So, the stock market would likely mutter along with mild swings averaging no more than + or - 6%. Investors would not be happy.
Of the psychoactive effects of hemp, Thomas Jefferson wrote: "Some of my finest days have been spent on my veranda smoking hemp."
Madison allegedly once remarked that hemp gave him insight to create a new and democratic nation. For that, we have a Constitution and Bill of Rights.
The Supreme Court has had problems with that by calling corporations "persons." They appear again to be confused about whether a corporation has a soul or conscience in order to have religious freedom to impose its religious views on others. Maybe the Justices should follow Jefferson's example and smoke some hemp.

Monday, January 20, 2014

Bill to Decriminalize Industrial Hemp Introduced in Tennessee

By Scott Gacek
Source: thedailychronic.net

Bill to Decriminalize Industrial Hemp Introduced in Tennessee


NASHVILLE, TN — Lawmakers in Tennessee have introduced a pair of bills that would remove industrial hemp from the definition of marijuana, decriminalizing the cultivation of the crop.
The bills would not establish specific licensing requirements for hemp cultivation, but it would add industrial hemp to the definition of “farm product” in the Tennessee agricultural code, effectively removing all barriers to hemp cultivation in the state.
The bills, filed jointly in the House (HB 1392) and Senate (SB 1686), are sponsored by Sen. Frank Nicely (R-Strawberry Plains) and Rep Jeremy Faison (R-Cosby).
Sen. Nicely says that allowing hemp cultivation in Tennessee could prove to be a financial boon for the state’s farmers. Sales of hemp products in the United States have grown steadily since 1990 to achieve over $500 million in annual sales in 2012.
The key to the bill’s passage, he says, is educating fellow lawmakers about the differences between industrial hemp and marijuana.
“Their biggest fear is that, if they support hemp, people will think they support marijuana,” says Sen. Nicely.  “Marijuana is a cousin of hemp, but cornbread is a cousin of moonshine.”
Colorado, Kentucky, Maine, Montana, North Dakota, Oregon, Vermont, Washington and West Virginia have defined industrial hemp as a distinct agricultural crop and removed barriers to its production.  Legislation is pending in several other states to do the same.
Hemp is a distinct variety of the plant species cannabis sativa that contains only trace (less than one percent) amounts of tetrahydrocannabinol (THC), the primary psychoactive compound in cannabis.
Farmers worldwide grow hemp commercially for fiber, seed, and oil for use in a variety of industrial and consumer products, including food and clothing.
Over thirty countries produce industrial hemp, including Australia, Austria, Canada, Chile, China, Denmark, Egypt, Finland, France, Germany, Great Britain, Hungary, India, Italy, Japan, Korea, Netherlands, New Zealand, Poland, Portugal, Romania, Russia, Slovenia, Spain, Sweden, Switzerland, Thailand, Turkey and Ukraine.
The United States is the only developed nation that fails to cultivate industrial hemp as an economic crop, according to the Congressional Resource Service.
The world’s leader in hemp production is China


Bill to Legalize Hemp Cultivation Filed in South Carolina

By Scott Gacek
Source: thedailychronic.net




COLUMBIA, SC — A Republican Senator from South Carolina has introduced a bill that would allow the cultivation of industrial hemp by the state’s farmers.
Introduced by Senator Kevin L. Bryant (R-Anderson County), Senate Bill 839 would exclude hemp from the definition of marijuana and make it lawful to grow industrial hemp in the state.
The bill makes it lawful for “an individual to cultivate, produce, or otherwise grow industrial hemp in this State to be used for any lawful purpose, including, but not limited to, the manufacture of industrial hemp products, and scientific, agricultural, or other research related to other lawful applications for industrial hemp.”
The bill would impose stiff penalties for anyone using industrial hemp to disguise a marijuana grow, adding an additional 5 years in jail and $5,000 fine on top of any other penalties.  Marijuana cultivation for any purpose in South Carolina remains illegal.
The bill has been assigned to the Senate Committee on Agriculture and Natural Resources.
Colorado, Kentucky, Maine, Montana, North Dakota, Oregon, Vermont, Washington and West Virginia have defined industrial hemp as a distinct agricultural crop and removed barriers to its production.  Legislation is pending in several other states to do the same.
Hemp is a distinct variety of the plant species cannabis sativa that contains only trace (less than one percent) amounts of tetrahydrocannabinol (THC), the primary psychoactive compound in cannabis.
Farmers worldwide grow hemp commercially for fiber, seed, and oil for use in a variety of industrial and consumer products, including food and clothing.
Over thirty countries produce industrial hemp, including Australia, Austria, Canada, Chile, China, Denmark, Egypt, Finland, France, Germany, Great Britain, Hungary, India, Italy, Japan, Korea, Netherlands, New Zealand, Poland, Portugal, Romania, Russia, Slovenia, Spain, Sweden, Switzerland, Thailand, Turkey and Ukraine.
The United States is the only developed nation that fails to cultivate industrial hemp as an economic crop, according to the Congressional Resource Service.
The world’s leader in hemp production is China.




Tennessee Hemp Industries Association Chapter Created

Source: theweedblog.com

tennessee hemp industry association

The Hemp Industries Association and the group formerly known as The Tennessee Hemp Organization, are proud to announce the establishment of the Tennessee Hemp Industries Association, the first state chapter affiliate of the national HIA. 
Formally launched in September of last year, 2014 marks the inaugural year of the novel associations’ education initiatives to support legalizing industrial hemp farming and industries in the state, and facilitate a hemp business resource network. Founding member, Colleen Sauve, represented the Tennessee HIA chapter at the 2013 Annual HIA conference in Washington, DC in November, where she participated in a hemp lobby day, visited Senator Bob Corker’s DC office on Capitol Hill, and met with his staff to discuss opportunities for hemp in Tennessee.
The Tennessee HIA will launch a fundraising campaign this coming spring, to begin as a strong trade-association in support of future hemp industries in the state. Having the HIA as the backbone to the state initiative will assist to facilitate business and opportunity in Tennessee’s future.
“There is much work to be done in Tennessee to prepare our local farming and business sectors for the economic boom industrial hemp legalization will bring,” said Colleen Sauve, founder of the nascent Tennessee HIA chapter. “We aim to provide resources and information to all those looking to grow, manufacture or sell hemp and hemp products as well as catalyze support for industrial hemp legalization throughout the state.”
“The grassroots movement to legalize industrial hemp is quickly gaining momentum, especially at the state level, as business, agriculture and manufacturing sectors realize the value and versatility of this incredible crop,” said Eric Steenstra, Executive Director of the national Hemp Industries Association. “We hope to see more local state chapters partner with the HIA, so we can collaborate and work together toward making hemp farming a reality for farmers across the country.”
To date, thirty-two states have introduced pro-hemp legislation and ten states have defined industrial hemp as distinct and removed barriers to its production: California, Colorado, Kentucky, Maine, Montana, North Dakota, Oregon, Vermont, Washington, and West Virginia. However, despite changes to state laws allowing hemp, farmers in these states risk raids by federal agents, prison time and land forfeiture if they plant the crop, due to the failure of federal policy to distinguish oilseed and fiber varieties of Cannabis (i.e., industrial hemp) from psychoactive varieties.



Faurecia looks to supply hemp fibre compounds

By Rhoda Miel
Source: europeanplasticsnews.com

Faurecia’s interest in bio-composites extends beyond injection moulding parts for the auto industry, and to the material itself.

The French auto supplier opened its first compounding plant in late 2013 specifically to make pellets for its NafiLean material, which uses a hemp filler in place of glass or talc. It is also looking to sell the resin to competitors, making it possible to supply the raw material even if it is not responsible for moulding the final part.

The compounding operation in Méru, France, is a small-scale industrial operation at this point, making polypropylene and hemp NafiLean pellets for current production in Europe, said Alexander Hasler, product strategy director and head of global marketing forFrance-based Faurecia in an interview during the North American International Auto Show in Detroit on 13 January.

Faurecia expects to open a second compounding facility for NafiLean in North America as sales come in from that region, Hasler said.

With the Méru facility, Faurecia joins a small group of global auto suppliers with in-house compounding capabilities, and the interest in selling raw materials in addition to complete systems.

“Having the knowledge of what is needed to supply a full interior program is an advantage even when you’re working on a component level,” he said.

Adding compounding allows the company to address niche material requirements that larger, global resin suppliers typically are not supplying, said Jay Hutchins, director of marketing and product planning for Faurecia North America.

For NafiLean, that interest is for an injection mouldable bio-composite, rather than compression moulded materials used in the past. Faurecia is using it in interior parts on the new Peugeot 308.

Faurecia developed the resin along with a consortium of university research and agriculture groups and is marketing under the Automotive Performance Materials joint venture name.
It is working with Mitsubishi Chemicals to develop another bio-plastic — called BioMat — which Hasler expects will be ready for the market by 2016.

Unlike NafiLean, which is still 80% traditional PP, BioMat combines bio-based fillers with a plant-based resin for a 100% bio-plastic.

“We saw a gap in our portfolio for an all-natural material,” Hasler said.

BioMat uses sugar cane to develop polybutylene succinic polymers. The PBS is targeted to replace traditional polycarbonate/ABS or PP with long glass fibres in parts such as door substrates or instrument panel carriers.


Interest in hemp and straw for new build homes grows

Source: specificationonline.co.uk

Interest in hemp and straw for new build homes grows

Natural crop-based building materials – such as hemp and straw – are of ‘growing’ interest  for the construction of new homes in the UK, a new report by the NHBC Foundation has found.

But the report also advises that there are risks associated with using such materials and highlights that at the current time relatively little robust evidence exists to support their long-term performance as currently used.

Crop-based materials have been used historically in the construction of houses and farm buildings in the UK – typically for cob walls and cellulose-based materials such as straw and reed for thatching roofs.  But for a long time, the use of these traditional materials has been in decline.  However, in recent years, there has been a renewed interest in the use of traditional cellulose-based materials including hemp, reed and straw, for walling and roofing new homes due to their renewable, low embodied energy and insulation qualities. 

The use of hemp in buildings is a recent development as it was illegal to grow hemp in the UK from 1928 to 1993 because it is a member of the cannabis family.  Hemp and lime panels have now been used in the construction of a number of buildings in the UK including the recently-completed BREEAM ‘Excellent’ Cheshire Oaks Marks & Spencer retail store near Ellesmere Port. 

The NHBC Foundation report Cellulose-based building materials: use, performance and risk is aimed at assisting those interested in pursuing the use of natural materials such as hemp, straw, cob and thatch in new homes and guiding them towards sources where further information and data can be obtained.  The research review identifies a number of risks commonly associated with the use of such materials - including biological degradation, infestation, presence of moisture and structural degradation – as well as assessing their likely performance and benefits. 

Graham Perrior, NHBC's Standards and Technical Manager, said: “Crop-based building materials – such as hemp and straw - have the potential to make a significant contribution to the low-carbon building sector.

“However, there are risks associated with using them, not least of which is damage or premature degradation caused by the unwanted presence of damp and moisture.  At present there is relatively little long-term performance data available, so the use of these materials must be supported by meaningful guidance, appropriate test evidence and independent certification.  Existing and future projects will need to be reviewed and monitored over the long term if we are to strengthen the knowledge base on good practice." - See more at: http://specificationonline.co.uk/news-article/5893#sthash.elJCnjHM.dpuf