mkochsch

Could someone give me the names of some brands which make a Sodium Percarbonate stripper. So far I've only see sod. hydroxide strippers and sodium hypochlorate and Oxalic "brighteners" at the BORG. thx. ~m

...and a couple of shots showing the colour and condition of the wood last week prior to stripping. [ATTACH]7586[/ATTACH] [ATTACH]7587[/ATTACH] [ATTACH]7588[/ATTACH]

A couple more exteriors of the house and a close up of wood that has fur on it from pressure washing. What I found interesting was that wood that was stripped using sodium hydroxide and lightly rinsed also had fur but it was much finer and softer than the fur left behind from straight stripping with the pressure washer. I'm planning on judiciously sanding some of the highly visible area at the front of house during prep. So far it's taken me about a week to get half way around the house. My local Osborn Brush dealer says it'll take three week to get that brush if I really want it. Are there other brands of this cup brush that could work? I'm thinking just a pole sander and 80 grit as I already mentioned. thx. [attach]7583[/attach] [attach]7584[/attach] [attach]7585[/attach]

I may have been too hasty in saying the Oxalic wasn't working. This morning when I went out to shoot these pictures my test patch seemed to have cleared much more. So maybe I just need to soak a little more. What should I do about the nails. Pulling and replacing would be ideal but not practical. How effective will a semi-transparent be again further bleeding? Thx everybody. ~m The first picture is a general exterior of the home. The second picture shows a typical nail bleed. Some are worse than this example. The Third photo shows the effect of using the Oxalic Acid based stripper. (REZ deck cleaner.) [ATTACH]7582[/ATTACH] [attach]7578[/attach] [attach]7579[/attach]

The stains are bad. I'm beginning to wonder if these were common bright finishing nails or just poor quality galvanized nails that gave out too soon. The oxalic brighten the wood up a bit but not much change in the stains. Another question. I had some areas where pressure washing wasn't able to remove the solid colour stain. On those parts I used a Sodium Hydroxide cleaner (Thompson's) and after the initial stain was washed off there continued to be a "darker" substance washing out. Are these just tannins coming out of the Redwood? I washed until I thought I'd gotten most of the stripper off. I'm letting the wall sit overnight and then I'll hit it was the Oxalic to brighten it tomorrow. Also, if I don't have an Osborn Brush (part no. 32132 ?) where do I find "defurring" pads? Can I just use a pole sander and 80 grit sheets to knock down the fuzzies? Thx. This site is great! ~m

I'm beginning to think the nail stains are there for good and I'm going to have to live with them. Using a darker semi might reduce the visual impact or using a solid to cover them completely. A very sad thing to do to redwood. Also I think because of the choice of nail the builders used the staining will just keep coming back. Short of pulling all the nail out and starting again I think my options are becoming limited. Hmm. ~m

Metal roofs typically have ice-guards put on when the roof's installed. I don't see any on this home. What gives? Could be the reason the gutters keep getting ripped off. Just my two cents.

So would a standard Oxalic based deck cleaner work or should I mix a concentrated batch (I'm also a bee keeper and have Oxalic crystals on hand). Do I apply and then wait until the stain goes away and then remove the acid with water? Thx. Michael

I'm in the middle of cleaning and prepping a 3200 sq ft. home which is clad in 8" Redwood channel siding. The home was built around 1966 and is located in Winnipeg, Canada where the temperature ranges from -40 to +40C. The original build used a 2" finishing type of nail to hold the siding on. The siding may have been unfinished for a few years before the owners decided slap a coat of solid stain on it, (probably to cover the nail bleeds). Many of the nails have popped or the board pulls through. The nails don't appear to have rusted so I'm thinking they are probably SS or Galvanized. Is there anyway to tell the composition of the nail? Grinder wheel perhaps. What's the best way to get rid of the bleed marks? We really like the look of the original Redwood and are considering going with a semi-transparent finish. I've been looking at Cabot and Flood for products on the recommendation of a neighbour who's a pro' in the business. Thanks for any advice and help. Michael