Review on 🧱 Enhance Insulation with Foam Seal FNS500 Insulating Dispensing: A Comprehensive Review by Justin Hill

With this purchase I now have three canister foam guns. It's the best of the bunch and only costs $1 more than the cheapest I have. This pistol is made entirely of metal. This is important because if you let the gun sit too long between shots, the first trigger will be very difficult. Foam appears to build up along the locking rod or at the very top, causing the metering rod to stick closed. The instructions state that you can reuse the gun with the attached foam canister for 30 days after the last use. It took me a full six months to use my other two guns and had no issues other than pulling the trigger hard the first time. It's quite stiff and I'm afraid I might break the plastic gun if I pull hard enough. My solution is to unscrew the flow control knob and tap the end of the metering rod with a small tap. I'm sure if I keep this up I'll eventually ruin the rod but that's why I bought this gun - to replace my expensive plastic pageris. With all the metal parts on this gun, I can pull the trigger on this gun to get foam and avoid using a perforator. The plastic Pageris gun can be found here: Pro Pageris Dispenser This gun is designed to hold the following canisters (plus others that have an identical attachment method): * Touch'nSeal (P/N 4004528712)* Great Stuff Pro (P/N 298141)* Handi-Foam (P/N P30115)* Pur Fill (P/N GF01) I can't yet comment on the effectiveness of the Teflon coating in preventing foam from sticking, but it certainly won't damage. I always thoroughly clean the exterior of my guns with acetone after each use. If necessary, you can completely unscrew the flow regulator to remove the foam dispenser rod and its spring. This allows you to clean the inside of the gun. However, there should be no reason to ask you to clean the inside of your gun if you ALWAYS leave the canister on! If you've cleared one, leave it checked until you're ready to install the full one. If you absolutely insist on cleaning the inside of your gun, you can purchase a canister of cleaning agent designed for the purpose. Each of the brands listed above also sells an air purifier. One cleaner is featured here: Great Stuff 259205 12oz Gun Cleaner Another cleaning tip: You can easily remove uncured scum with acetone. Once healed, it's forever. I have yet to find a solvent that will dissolve the cured foam. (I use the Pur Fill brand.) I disagree with Erich about using a canister. I think his technique might be flawed. When dispensing foam, you must hold the gun so that the canister is upside down. That is, the gun must be below the level of the canister. This would be the normal way to hold the gun, but sometimes the situation requires some maneuvering to get the foam where you want it. The foam in the canister is heavier (denser) than gunpowder. The canister does not have a suction tube at the bottom of the canister like a spray can. If you try to spray foam when the canister is off the top, you're releasing propellant and not as much foam. If you do this often, you'll use up all of the propellant and leave useless foam in the canister. A similar situation occurs when you try to use a can of paint upside down. I've used half a dozen foam canisters and none of them are empty. This gun comes with a pair of plastic hoses and a pair of plastic nozzles that fit onto the end of the dispensing tube. This allows for a small expansion if needed, or a very small hole if you need to get foam in a very small hole. I haven't used them yet, but will have them handy if the opportunity arises. Of course, you must clean them up immediately if you want to use them again. And that's the beauty of this gun and the canisters that support it. You can use a small amount of foam today and repeat tomorrow and next week until you have used all of the foam. No more buying a new single-use styrofoam can for a small job and buying another one tomorrow. If you just need to dispense foam from time to time, this gun/can system is a great way to do it. This is the highest quality pistol I have used and is sold at a reasonable price. Highly Recommended.- Lauren Edit: December 21, 2014: I've now had a chance to clean the foam from the inside of this gun. For those interested, you can completely disassemble this gun to clean the inside. Use the gun cleaning stick, brushes, and patches to clean the feed tube. Everything else can be cleaned with a screwdriver or pickaxe. Don't lose the bullet or any other parts that may fall out when disassembling this gun. Better yet, don't let foam build up in your shotgun. This can be avoided by following the instructions and NEVER leaving the gun without a can of foam. Even if the jar is empty, don't remove it until you're ready to replace it. I didn't take my own advice and within 24 hours the foam was almost done. I also found that the teflon coating actually works. Mounting foam does not stick to it and can be easily removed with a fingernail. I disagree with John Sanchez about cleaning the gun every three or four cans. I don't think it's even necessary unless you let the foam cure. I've found that my expensive Pageris pistol needs cleaning in the meantime. I couldn't disassemble this weapon enough to clean it. I threw it away. Buy this one instead.