Dangers of Hardie/Cement Exterior
sallen2008
15 years ago
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kandkwi
15 years agolast modified: 9 years agoRelated Discussions
What is the best exterior paint for Hardy Plank & best caulk
Comments (12)Just want to pass on my experience with my owner/builder Hardie Plank installation. I prepainted approx. 600 sticks of primed HP in a heated shop with a Cloverdale covercoat flat acrylic latex. (If you don't prepaint then the primed overlap never gets sealed correct?) I had heard of the chalking problem with HP, and so restacked the prepainted plank with heavy plastic wrap between each piece. The rumour at the time (2008) was that contact with the raw back of the hardie plank caused the chalking on the front. I gave the installed siding a 2ND coat of the Cloverdale,,, all for naught, I got chalking and fading within five years!!!!! I suspect the paint quality, even though we asked for the longest lasting paint they had. At seven years commenced repainting this 2 story house and its five, 12 in 12, 33ft. peaks, with BM Aura, rrrrrrr. The real reason I am posting is a discovery I made when siding my garden shed with the Hardie. I took to sealing the cut ends, front and back, plus the lower drip edges and the upper overlap with some oil primer I had kicking around. Then painting the finished job with the remaining Cloverdale. A few years later the chalking appears where primed hardie got only the latex paint, just like the main house. BUT NO CHALKING WHERE THE OIL PRIMER WAS APPLIED!!! See attached photographic proof. So don't be so fast to discount using an oil primer on your Hardie Plank! I have now primed shed with the oil primer from Home Hardware as a test, and will update how it pans out. Sorry for rambling long, Quadlock owner/builder, Norm...See MoreBest exterior paints for fiber-cement siding?
Comments (4)All brands are reformulated every year and all manufacturers deny that they are reformulated. There is really no way to know for sure how long a coating will last because all manufacturers lie and there are no exceptions. A paint that is good one year may not be so good the next year and that is just how the painting industry is. There is no one paint maker that I can say I have used every year for the past 20 years. There is no one brand that I can say is my trusted brand. They have all let me down at one point or another and I have learned that there is nothing I can do about it....it is just the nature of the painting industry, and maybe any industry? It's all about the cash when you break it all down. I thought that Duration was the big winner for Hardie Board, but I was recently pleased with C2 Direct To Substrate for some I painted about a month ago. Will it hold up for 2 years or more? Heck if I know....See MoreHardi Backerboard vs Cement board
Comments (14)It's not like the company was innocent in all doings, people since Pliny have known of the danger of asbestos, and failed to take adequate precautions to ensure the safety of its workers, not to mention the end users - mesothelioma etc is starting to crop up in people whose only exposure to asbestos has been working in schools or being unlucky enough to be playing in the backyard whilst dad was demolishing or building a shed. Mike, I hope you are overlooking the fact the company did wrong, knowingly, and compounded it by cynically hiding its assets and leaving a woefully underfunded shell company holding the bag. Following your logic, it would be ok for companies to assassinate whistleblowers to protect its assets, the company that made exploding Pintos did no wrong, and coverups are a good thing because it protects the shareholder's interests? I'm sorry, I'm horrified by your callousness. No, the money won't bring those people back, but these are families who have lost loved ones and providers, and often have gone deeply into debt, caring for the sick (and they are ugly diseases with much suffering) and trying to provide for themselves. As a person who considered myself Australian, I tried to support Australian businesses, but I cannot support anyone whose conduct is morally reprehensible. It's not like there would be a free-for-all where the company would be stripped bare - and if the amount of compensation required amounted to that, so be it - estimates were prepared years ago for what the compensation would amount to, they left the shelf company with funds well short of it, knowingly. The conduct has been judged as criminal in some cases, as the attached link attests. It's not like the poor shareholders are caught flat-footed, either. The company has been extremely profitable world-wide, and the shares have been traded freely. People again have knowingly invested in, or continued to hold shares in the company with this over its head. I guess you don't believe in accountability in government either? I am staggered by your callousness. Here is a link that might be useful: Recent James Hardie history...See MoreJH Fiber cement board Mold/Maintenance issues???
Comments (25)Patrice -- there are tons of pics of our siding on my website, along with the whole story of why we were residing (and re-roofing) a 6 year old house in the first place. We went with the smooth lap siding and used a 4" lap to simulate the siding on old clapboard houses. The siding was hung pre-primed and we painted it on-site with SW Duration Exterior. I believe I included some closeup shots of the installation details (metal flashing behind joints, how the hardie needs to be cut short at any roof-wall intersections, etc.) These are all things your installers should already know, but you might want to make sure they are doing them right, because if not, JH won't honor your warranty (they'll blame any problems on the installer and rightfully so, but that won't help you). If you don't want to sift through the whole saga, click the Show All link and go to the very end -- the last set of pictures (#382 and on) was posted after the siding had been up 4 years so you can see how it held up. Here's one: Good luck with your decision. Here is a link that might be useful: Our house......See Moremeldy_nva
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