Off topic: Sika Fence Post Mix -- polyurethane resin. Experience?
Posted by Dave in NoVA 7A on July 5, 2018, 12:06 pm
I just discovered this Sika Fence Post Mix, which is a two-component, pre-proportioned polyurethane resin for anchoring 4x4 pressure-treated fence posts. Does anyone have experience with it? It says one bag will expand to fill a 3-foot deep, 8-inch in diameter hole for a 4x4 post. I can't find any info for use with 6x6 posts, or whether it's even recommended for 6x6s. Some downsides -- 1) you have to store it within a narrow temperature range prior to using or it will either start to expand too quickly (sooner than the 30 second time) or not quickly enough and compromise its integrity. 2) if you spill any outside the hole, you'll run short on foam for the post. Upsides: 1) Much lighter to haul around when purchasing vs. 50# bag of instant cement. 2) Any excess set foam can just be sawed or cut off with a knife. 3) Lower mess, no cleanup. Just throw the bags away. 4) Easier to remove posts down the line if you need to. 5) Supposedly as effective as cement in anchoring the post.
Re: Off topic: Sika Fence Post Mix -- polyurethane resin. Experience?
Posted by AJ Mid TN on July 5, 2018, 9:34 pm, in reply to "Off topic: Sika Fence Post Mix -- polyurethane resin. Experience?"
I saw a discussion on this somewhere else. No experience with it but isn't the weight of concrete what helps steady the post? This has little weight? Don't know.
Posted by Dave in NoVA z7a on July 6, 2018, 8:16 am, in reply to "Re: Off topic: Sika Fence Post Mix -- polyurethane resin. Experience?"
thanks for responding. I'm not sure it's just the weight. I would think it would anchor by the way it expands into the hole.
Posted by Rob North Tennessee on July 6, 2018, 2:46 pm, in reply to "Off topic: Sika Fence Post Mix -- polyurethane resin. Experience?"
Dave Ive never heard of that. I just dig me a hole, put in my post and pour QUIKRETEŽ all around it and then throw some soil on top of that..1" or less. In just a couple of days, without water, etc. its in there. Maybe not during a drought but I have never added water to the rocky type QUIKRETEŽ
Posted by Dave in NoVA z7a on July 6, 2018, 7:22 pm, in reply to "QUIKRETEŽ"
Good to know. How heavy are the Quikrete bags? I've read you probably need a wider hole with Quikrete than with foam. These foam bags are very light.
Posted by Rob North Tennessee on July 6, 2018, 11:05 pm, in reply to "Re: QUIKRETEŽ"
Those bags are heavy Dave,. #40 maybe. They are cheap and it works great. The poly resin sounds very light but I would think lots more expensive. QUIKRETEŽ $2.49 here @ tru-value hardware Sika Fence Post Mix seems to be selling anywhere from $18.99 to $24.99 @ Ace and Ebay etc.
Re: QuikreteŽ Cheaper
Posted by Dave in NoVA on July 7, 2018, 8:02 pm, in reply to " QuikreteŽ Cheaper"
$10.00 at Home Depot for 1 bag of Sika.
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