Needn't Clean Foam Gun, Pu Expanding Foaming Gun, Upgrade Caulking Gun, Heavy Duty Spray Foam Gun, Metal Body Covered with PTFE, Suitable for Caulking, Filling, Sealing, Home and Office Use

I have found using this gun with the push on plastic tips to be a very reliable system for applying low expansion foam. I leave the can attached and tips on after use. If it's been a half day or more and I have not used the foam during that period, I pull off the old tip and attach a new tip. I try to keep the end of the gun tip clean. Putting on a new tip is typically the only thing needed. But once in awhile I might use some xylene to brush up the tip. I have not tried using the valve. When I change the can, I quickly detach, spray some foam cleaner inside the basket and screw on the new can as fast as I can. Great product and decent price. Thank you. Updates:::::: The last few days I had difficulty using gun. I had been leaving the tips on the end after use. Sometimes it was at least two weeks between usage. After such a long period of time, I started using a small drill bit to remove dried foam in tip before use. This method allowed me to reuse the old tips but caused a build up of dried foam on the business end of the gun where the ball bearing valve is. I looked at the tip under the microscope and I could see solid buildup across the tip of the gun barrel. This was shutting off valve operation of course. I picked the layer of dried foam off (under magnification) with the tip of a knife blade. This resulted in a chewed up gun tip but works again like a brand new foam gun. My new habit is going to be to remove the plastic tip at the end of the day and clean off the end of barrel. I will use a new tip at the start of each day. I have a small jar of Xylene in the area where I keep the gun. I dip the tip in the jar when cleaning. Before I place a new plastic tip on the barrel, I shouldn't but I suck on it for a few minutes to soften it before slipping on. These tips are tough to attach. It helps to place the barrel on top of a corner of a surface to help steady the barrel while forcing the new tip onto the barrel. I had to do foam work in winter time temperatures. I took a box and put a 60W incandescent worklight inside the box. I stick the foam can portion through a hole in the top of the box to keep the can body warm enough to continue foaming in these temperatures. By following these procedures I have been able to minimize the number of guns I throw away and maximize the volume of usable foam in a can. This makes a job that used to be such a headache much more manageable and far less wasteful. Best wishes.

Ok, so I have seen some bad reviews and some good reviews on this one. I am guessing that different sellers have something similar but slightly different in features that are being listed as the same product causing this confusion. Anyway, the one I received DOES include a ball valve where you can close off the foam input area of the spraygun. This should seal things up and make cleaning less needed but the thing is that the area above where it is closed off does have some crud that comes out and will pretty well seal things up. I don't want to find out if that will cause issues or not so I run cleaner through it (btw the cleaner is just acetone so get some in a spray bottle to clean this area if you want). The outside of the wand also gets blowback and crud on it so that will need to be cleaned off. The extensions seem to be a one time use type of thing but I have found that regular old plastic straws can be found that will work for this or you can just go without. I have done both and they are equal unless you need to spray foam in between something or get in a bit deeper. As far as the cans not threading on in some reviews, I have not had that issue AT ALL. I also take my time and make sure that it does not cross thread. All the threads are on the shoulder of the can and NOT where the valve seats so you should be able to catch a full thread before the can starts to make contact and begin releasing foam. Anyway so far I am very happy with this purchase and will be using it a lot over the next couple years. I am currently working on a house that had NO insulation in it until I started installing it and the foam works to seal some edges and gaps that I have found. Also had to raise a corner of the house about 2.25 inches and while some area's I could put a block of wood or a brick in for now the majority of it ended up being filled with spray foam. The old foundation is basically rubblestone walls and has deteriorated a bit so finding something to fill the gap is more than just a pain.

Bottles are easy to change, and thread on simply. The open/close control valve moves/works smoothly. The unit is simple to operate and control. While most of the foam is flushed out when pressing the trigger with the valve closed, I still prefer to run some cleaner through it when I'm done every time. The unit is comfortable to hold and works well for me so far.

works well.

I was lucky. When I first attempted to use this product, I read the user manual. It was 82 degrees out but I still put on a old pair of jeans and flannel shirt anyway because I know how foam can be nasty if it gets on you. I followed the Operation Steps on the back of the package to the letter. It says to "Keep the valve close". I couldn't get the Great Stuff foam can to "thread" onto the gun. I read the instructions again. Still couldn't get the can to screw on. So I used the plastic nozzle that came with the gun. After I finished with phase one, I thought I would try putting it on the gun again. Of course due to the heat I had remove my flannel shirt. Luckily I wear glasses, because when I tried putting it on again it power blasted foam everywhere for a split second. Needless to say my fairly new t-shirt was ruined. A small bit hit my glasses and is still there three days later. So I brought up the amazon ad to start a return. Reading the ad again, I see where there was a reference to review the users manual in the technical section. So I did. Guess what. It states to put the can on the gun with the valve OPEN. The instructions on the back of the package state to put the can on the gun with the valve closed. This may have been the problem. I don't know. So make sure your wearing protective gear when working with this gun and Great Stuff foam!!!! If the valve should be open, contrary to the package instructions, they need to placard this clearly on the package prior to shipment.

The best insulation gun for the price

Unlike every can that says it's restartable, this is *actually* restartable. Huge huge difference. Sturdy, easy to control, easy to clean. I accidentally left it open and uncleaned over night and it still restarted the next day. It didn't seem to be compatible with a can of lepage expanding foam. It physically fit well but almost nothing would come out. Could have been the can. Worked very well with Great Stuff Pro.