A guide to asbestos removal in Australia.The only way to be 1.Have a look at our asbestos labs page for a list of all NATA accredited laboratories and the prices they charge.Recently, a few readers have inquired about an asbestos cement sheeting profile known as Standard asbestos corrugated sheeting.Heres some pictures and how to identify it.Standard profile corrugated asbestos cement sheeting is like the baby brother of Super Six and looks similar to corrugated iron.Its often found in the construction of old domestic garages and sheds and in addition it can be found on commercial buildings such factories, shops and farm sheds.It was used for both wall and roof applications and is fixed on with screws and nails.Fact file Years of manufacture Standard profile corrugated asbestos cement sheeting was made from circa 1.Significant Manufacturers James Hardie Coy manufactured these type sheets under the trade name of Fibrolite Standard Corrugated Sheets.Wunderlich also manufactured similar sheets with a trade name of Durabestos standard corrugated sheets.Dimensions Width 8.IMG_4750-1024x768.jpg' alt='How To Install Pro Rib Roofing Pictures' title='How To Install Pro Rib Roofing Pictures' />Pitch distance between corrugations 7.Depth 2. 5mm 1 inch.Standard Lengths 1.Corrugations 1. 1 ridges top side see picture below.Cellulose asbestos free equivalents No cellulose or asbestos free equivalent products were made.This saves a lot of guess work, which often occurs with other types asbestos sheetings and modern equivalents such as Super Six, Hardi.Fence and Hardiflex.Its asbestos, so take all the usual asbestos precautions when dealing with it.Dangers and safety precautions These sheets are manufactured from white asbestos chrysotile and early sheets may possibly contain blue asbestos crocidolite along with cement and silica.Inhalation of asbestos fibres may lead to asbestosis andor mesothelioma.The usual protective clothing should be worn such as disposable overalls, P2 respirator, gloves and boots.Sheets should be removed intact, avoiding breakage.Metal-Roofing-Menards-Beautiful-Roof-Rake-For-Roofing-Nails.jpg' alt='How To Install Pro Rib Roofing Pictures' title='How To Install Pro Rib Roofing Pictures' />Sheets should be wrapped in black builders plastic and sealed with duct tape prior to disposal.Special caution for removing roof sheeting Exercise extreme caution when removing standard corrugated sheeting from the roof.These sheets can be particularly fragile and if walked on you risk falling through.Find Tile Roofing Repair Contractors in Naples, FL to help you Repair a Tile Roof.All Naples contractors are prescreened.CgN1v2Ztk/maxresdefault.jpg' alt='How To Install Pro Rib Roofing Pictures' title='How To Install Pro Rib Roofing Pictures' />Homeowners are increasingly turning to metal as a roofing solution.A common question is whether their old roof shingles need to first be removed.Mastercraft Exterior Doors with Built in blinds offer maximum privacy with minimum care, and the blinds never need dusting or cleaning.Forget the messy and dangerous.Horse racing Ice hockey Karate Olympics Racing Motorsport Baseball is a batandball sport played between two teams of nine players each.The goal is to score.Not only will you be hurt when you hit the ground but you will receive deep cuts from the broken sheeting as you fall through.Pictures of standard corrugated asbestos sheeting A domestic garage cladded with standard corrugated asbestos sheeting.This one has a steel frame and wood purlins along with sheet metal door.Popular in the 1.Check the diamond shaped washer with bitumen seal.These are used on the roof and sides.Nails are also used.Internal view of garage.Wall and roof. Standard profile Underside view of roof.Asbestos corner moulding is used here.Close up of standard profile Note the 1.Hardies 1. 96. 3 catalogue with details of Fibrolite Standard Corrugated Sheets.References James Hardies Coy Pty Ltd Price List September 1.Building and Allied Trades Association BATA Industry Magazine Vic December 1.Price Guide Materials section.Super Six fence sheets and modern non asbestos Hardifence.Corrugated fibre cement sheets have been used in Australia for over 4.The original product was an asbestos cement product known as Super Six manufactured by James Hardie Co.Hardifence based on the much safer cellulose fibre.Both products look very similar but how do you distinguish between the two The original corrugated Super Six asbestos cement sheets were manufactured by James Hardie Co.It was widely used as fencing and for roof sheeting with much original Super Six fencing is still in use today.However, from after 1.Super Six was replaced by a similar looking product known as Hardifence.This new product eliminated the deadly asbestos fibres and replaced them with the much friendlier and safer cellulose fibre, which is essentially made from wood pulp.Hardifence is still manufactured to this day and is an excellent product.To the untrained eye, Super Six and Hardifence look quite similar.However, dealing with Super Six requires special precautions to be taken during its handling and for its disposal due to its asbestos content.Be careful not to dispose of any Super Six sheeting in general waste or skip bins not designed for asbestos disposal as you risk being charged a hefty asbestos disposal fee or even worse, a fine for illegal asbestos disposal.Is it asbestos Super Six or modern Hardifence Tips to identify Super Sixasbestos and Hardifencenon asbestos.Age of the house A house built in the late 1.Super Six fencing installed.Although its possible second hand asbestos Super Six sheeting may have been reused the incidence of this is probably low.Likewise an older house is more likely to have asbestos Super Six asbestos fence, which may have been installed in the 1.Count the number of ridges The latest version of Hardifence has 5 ridges which is a sure sign of being the asbestos free Hardifence rather than Super Six which has 7 ridges.However, to make matters confusing, early versions of Hardifence have the same profile 7 ridges as Super Six.See picture above.These early versions of Hardifence were prone to breakage and often cracked off at the bottom.Also breakage near the diamond washernut bolt fixing is also quite common.Hardies soon improved Hardifence with deeper corrugations and eliminated the washer, nut bolt with the top metal capping becoming an integral part to keep the sheets from separating at the top.Markings If possible, examine the edge of the sheet to see any indentifiable markings.Hardifence has Hardifence printed on there along with a date of manufacture.Early styles of Hardifence have Manufactured without asbestos and a manufacturing date mark.Capping metal or asbestos cement.If the fence is fitted with fibre cement capping, then its a sure sign that the fence is asbestos.However, if the fence has metal capping then its most likely the fence is Hardifence and does not contain asbestos. . The most recent version of Hardifence is always fitted with metal capping as this is an integral part which keeps the sheets from separating at the top.However, bear in mind that there are plenty of fences where no capping is fitted at all.Finger nail scratch test.Use your fingernail to scratch the surface of the sheet.If you can gouge a mark in it, then this is a good indicator of being Hardifence rather than Super Six.Generally Hardifence is slightly softer than Super Six.Using digital camera in macro mode If you have a digital camera then use the macro mode setting to take a close up picture.Next, find a suitably broken corner or edge to photograph.You can then examine the type of material composition from the comfort of your computer monitor.Whilst asbestos fibres are microscopic, the asbestos fibre used in the manufacturing process of asbestos cement sheeting was in large clumps or bundles.These fibrous bundles can be seen sticking out near a breakage point or sometimes on a edge of the sheet when you examine the close up photo of your sample.From this you can determine whether or not the material is asbestos cement or not.By contrast, the cellulose fibres used in Hardifence tend to be bonded more uniformly and fibre lengths tend to be shorter and not as strong.As a result, broken edges of Hardifence almost resemble the appearance of torn cardboard with a soft fuzzy edging.In addition, broken edges of Hardifence may tend to have a layered appearance, probably due to the manufacturing process.Warning Do not break any suspect asbestos cement sheeting when taking a close up photo as this will release deadly asbestos fibres which may be breathed in.Better to find an existing broken corner or edge to photograph.If there has been one redeeming factor about asbestos in Australia, its publicity generated by high profile court compensation claims during 8.I believe has resulted in a public awareness campaign that no State Government health department awareness program could ever hope to replicate.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |