Browse Forums General Discussion 1 Dec 15, 2010 8:10 am Have just had a 6x5 metre pergola built of h3 treated pine- was about to put the roof on when I noticed it had been assembled using bright nails ,they also have a red tinge on the shaft of the nail. I am aware that you should use gal nails on treated pine ; to my suprise when I asked the builder he said because it is covered it would be fine. There seems to be varying opinions on how corossive treated pine is ,WILL my frame last or will my $2000 of treated pine fall apart! Will painting the timber help at all. Any knowledge in this area would be greatly appreciated. Re: treated pine & wrong nails 2Dec 15, 2010 10:02 am When you say H3 treated pine do you mean CCA or LOSP (blue) pine? If it is blue pine then bright steel will be fine, if it is CCA then you should be using hot dipped galv fixings as a minimum. The red tinge on the nails is the lubricant on the tip of the nails used in nail guns. Hot dipped Galv nails for nail guns are commonly sprayed a greeny colour on the heads. This is taken from the Treated Pine Fact sheet: Nails, bolts and metal fixings: Due to the presence of copper and other electrolytes in the preservative, all metal connectors in contact with Tanalised® CCA treated wood should be corrosion resistant. For most situations hot dipped galvanised steel will provide satisfactory performance although higher grade material such as stainless steel should be considered for critical connections particularly where there are additional sources of corrosion (salt) or where very long service life is required. Consult the fixing manufacturer if in doubt. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: treated pine & wrong nails 4Dec 15, 2010 12:07 pm If the builder wont rectify, I would go around and put in 75mm - 100 mm TP screws, or bugle headed screws. I know that this may be a pain but a couple of boxes may cost $20 if you have a decent drill. Your builder will charge you much more than that to add more nails.... Screws are always best but usually by owner builder like me - takes more time but better long term Re: treated pine & wrong nails 5Dec 15, 2010 1:04 pm Thanks to all who have responded.The info tab on the timber says its treated copper chrome arsenate .To remove the nails would be difficult and make a mess of the timber.Using TP screws could be the answer ....the only issue then is the many nails ie 8 to 12 per joint left behind to rust and spoil the timber,hence why I'm hoping there is some way of protecting them.The pergola actually sits over a elavated merbou deck and looks great -shame about the headache! Re: treated pine & wrong nails 6Dec 15, 2010 1:16 pm Hi Mick. As long as you don't have water running over the nails to transport the rust stains you should be fine. The fixings just slowly corrode and don't seem to stain to badly. As has been mentioned try to get some TP screws or even better bugle head screws in. I prefer to use these as they hold very well and are cyclone proof. If you can then just paint it all and put on your roof cover and you should have years of enjoyment out of your pergola. I would try to get the builder to rectify in the first place (either replace or screw) as they should know better. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 DIY, Home Maintenance & Repair Are you going to have the frame exposed or are you cladding it with something. Usually if you are making an exposed frame you would use solid legs around 100x100 or… 3 6592 I’m just in the process of replacing 2 stud walls that have been severely damaged by termites and am planning to use h2 blue pine. I just wanted to if anyone can advise… 0 52859 Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 10976 |