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| Thread ID: 48136 | 2004-08-15 03:56:00 | Off Topic -Difference between galvanised iron & steel roofing? | Laura (43) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 261856 | 2004-08-16 08:10:00 | Not been mentioned, but with advent of long run things have improved,mostly went on the joins. | Old Tom (5871) | ||
| 261857 | 2004-08-16 08:48:00 | Laps Tom, laps. :D | Winston001 (3612) | ||
| 261858 | 2004-08-16 09:09:00 | Laps, like this? (www.reediejournals.com .jpg) | godfather (25) | ||
| 261859 | 2004-08-16 10:39:00 | I have one that laps like that. Ours happens to be black and white. Cute Tabby though you have. The difficulty of the English language. To Laura:- Hope I didn't hijack the thread. Galvanised Iron is usually steel these days. When it comes to roofing very often a new roof corrogated will be put on and it is suggested you wait before painting. This so the new roof will have time to weather so the first time it is painted the paint will not fall off. |
Elephant (599) | ||
| 261860 | 2004-08-16 11:21:00 | Laura, If your roof is sound, paint it with a good system. If it has severe corosion, found by looking at the underside of the sheets through the manhole.. looking at the laps, (if you see building paper there then your roof may not be as old as you think) then replace it. Depending on your budget, the best coloursteel roof will last 25 years or so that close to the sea, not the 100 years or so from the original. I will reccomend that if you have to re-roof you do NOT use a metal type roofing. There are some excelent products from bitumastic tiles, sheet products to liquid applied membrains. You will never get the durability of the "old Iron" ever again Houses are constructed to today to be re-cycled every 25 years or so, if no maintanence is done. .. Less in Auckland ;-) .. thanks to the BIA. Most importantly .. put a saucer of milk in the attack to ensure the borer are well fed and don't le go hands. :D |
fairway (5932) | ||
| 261861 | 2004-08-16 12:03:00 | fairway: I'm noting your advice about the borer - being aware that probably only their hand-holding has kept the house up for so long. I just never thought of MILK as the answer. Truly, we learn something every day... |
Laura (43) | ||
| 261862 | 2004-08-16 12:20:00 | Laura, I have been informed it is too cold down in Dunedin for the borer to live... well that is what I 've just been told.? >>Less in Auckland .;-). thanks to the BIA. Far too much rain up here, stop sending it on ... PLEASE |
fairway (5932) | ||
| 261863 | 2004-08-16 12:45:00 | Sadly for me, your informant was wrong, fairway Borer just love our Dunedin climate. (Maybe they thrive so well because they've no competition from those other wood-chewing greeblies that need Auckland's humidity?) Sorry about your rain. Didn't come from here. We're only doing snow today... |
Laura (43) | ||
| 261864 | 2004-08-16 13:33:00 | No roof will last 100 years in even a moderate marine environment without regular maintenance. Higher grades of pre-coated steel roofing (long run) usually carry a 25yr warranty in very severe coastal environments (0-100 metres of breaking surf, heavy salt deposits, etc,) but, this only applies with regular maintenance, washing, inspection... As fairway says BIA via the NZ Building Code (B2/AS1) only require non-structural roof claddings to last 15yrs (50yrs for structural and those not easily replaced, which is almost non [simplified for brevity]) which is at least ten years shy IMO for a major component. You can stretch the life of the roof cladding well beyond 25yrs by repainting it, before it deteriorates too much. Most membranes carry much the same warranty or less than pre-coated steel. A major brand of torch on modified bitumen membrane (two layers), for eg, carries a 20yr warranty with a stipulation that regular maintenance and inspections be carried out, that's for approximately 2-3 times the cost before you put the plywood substrate down. I would not use a liquid applied acrylic membrane on a timber based substrate of reasonable surface area (and many junctions) and expect it to last for much more than 10 years, I come across ones that have barely lasted five and more particularly on decks that are letting in water almost immediately (including other types of liquid applied membranes). Applicator error and too high an expectation as to what the material can tolerate is usually the problem. Chip coated fibreglass/bitumen tiles have a habit of coming off where temperatures are a little lower and winds a tad higher, besides anything other than corrugated iron looks naf, IMO, on a old villa or bungalow unless it has been designed with solid clay tiles in mind ;) The miss-use of roofing products and their application in conjunction with other components is one of the main causes of leaky buildings in NZ. Unfortunately the more common little beasties that chew through your investment are well distributed throughout NZ. Some like it a little dryer, some like the damp, some like a bit of sun and some like to hide in the shade. There's usually a niche (or 3) somewhere in your house to suit. At least you wont get the ants they have in Auckland and north that like to chew on water damaged cellulose, ie, the sweet part of timber and they love untreated pinus radiata. Charming little critters :D Cheers Murray P |
Murray P (44) | ||
| 261865 | 2004-08-16 14:35:00 | Well then, Murray, this started with my old roof & now you're getting me curious about the microscopic wee beasties that obviously live in my pantry shelving - untreated pine, I presume - & leave no signs apart from a fine powdery dust on the shelf below. (Quite separate from my borer, which has lived here off & on since before I was born. They'll have many more generations in the house than me - and are probably more entitled to live here by now, if they had their rights.) As these other wee fellers leave no holes and merely require some extra dusting from me, I've been operating a live-and-let-live principle. Obviously they weren't going to bring the house down etc.. Now you've reminded me those shelves are only a 1950s job - done by my parents - so I should be resolute in identifying & eradicating the bugs. (Then again, I could always take out the shelves and build some more convenient ones. Melamine doesn't quite fit the period, but wotthell...) And speaking of period, you're quite right about the tiles/membranes etc. in terms of fitting in. I value fairway's advice, but this house needs a corrugated metal roof to look right. |
Laura (43) | ||
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