Styrofoam Waterproofing Paint in 5 Minutes 

Why don't you try it and let us know? Do you think this guy is suddenly an expert and thinks like you to make these decisions for you?

@@FrustratedBaboon If my asking simple and reasonable questions makes you agitated to the point of posting rude, ignorant and childish comments, I feel sorry for you. You're life must be pretty unhappy. Maybe get help instead of posting nonsense.

Thanks

Titanium Dioxide and Zinc oxide would both act to block UV. However, there are better and more comprehensive solutions I don't know about.

@@MrPicklesAndTea I didn't know titanium dioxide was a good UV blocker. Since it is a nice white pigment, that might be very useful. I'll definitely experiment a bit with that :)

@@TheStigma Any luck trying this? I have a bridge to build over a creek. Need something really durable. I think if this was thinned with more solvent, it would be good as it would soak deep into the wood. Also wonder what the bond is like between layers? Do the subsequent coats etch into and bond with the previous dry coat or just sit on top(Not good for durability) Thanks!

@@wingnutbert9685 I haven't got around to testing it much aside from a few small experiments yet, sorry. I'm not sure how well it would penetrate wood, but as far as multiple coats goes that shouldn't be a problem since the solvent in extra layers will temporarily liquidfy the top of the existing layer, so it should chemically bond together as one material without need for any sanding or prep between. Multiple thin layers will definitely be best to do, because otherwise gas can easily get trapped and make the plastic porous - and thus brittle. If that happens you will see it turn white rather than clear. You can consider the old farmers trick (for fence posts) of mixing gasoline and diesel with bitumen (basically ashfalt, commonly found as roof repair material) to make a paint that penetrates very deeply and basically makes wood rot-proof and waterproof. You could use xylene instead (less toxic) of course, but fuels are an alternative for the cheapscate DIYer. Can't really make it any color other than black, but this stuff holds up really well for wood that needs to be in or directly on soil - especially in wet conditions. There is even a further modification to this that involves mixing in a bit of silicone to make it very water repellent as well. That kills any ability for the paint to penetrate wood deeply though, but it can presumably make a good weatherproofing outer layer.

@@TheStigma Thanks very much for the reply! I'd like to avoid the bitumen/gas route. The bridge is over a sensitive creek habitat and is a fairly steep hike to get to and from. I forgot about silicone. I did see a while back, that people were mixing 100% silicone caulk with a solvent (might have been a white spirit) to a very thin consistency. It was used as a penetrating waterproof medium. Applied to a bed sheet for an ultra light tarp for travel, etc. Also applied to boots and backpacks, etc. Takes time for the solvent to evaporate off, but was water-thin and really soaked in. Just a matter of how it reacts with the wood and if the wood it dry enough. (I'm planning on using a downed Douglas Fir that's right near the creek. The plan/hope is to cut a 26 foot straight section, with one OD being about 18" and the other end being about 30" OD, with a chainsaw. Then saw it down the middle and take the bark off. I'll cut a sample off the waste end and try some various mixes. I just liked the hardness of this stuff. Though thinned Silicone being flexible might actually be a better idea so it would be less apt to crack as the beams expand/contract. thanks again for the reply! If I experiment, I'll post finding here. 👍

False! Stop spreading misinformation. It just melts it.

I don't think acetone will dissolve polystyrene. It does "melt" it (release the gas bubbles and make it soft) but it does not truly dissolve. Acetone will turn it i to a thick glue consistency. It is a great waterproof glue for porous surfaces, but you would not be able to spread it well to paint with, and it needs clamping force to adhere well, it does not soak in like a paint.

Kommentare in deutscher Sprache

Acetone can't dissolve like xylene. Acetone only soften

False! Acetone just melts the styrofoam, but it doesn't disolves it.

Yes

Thank you so much

Thanks 😊

I guess kerosene will also work

Corante

Nitro

Nope, he used expanded polystyrene (EPS) which is styrofoam, vice extruded polystyrene (XPS).

I don't know, but it makes good napalm.