Prosoco R-Guard Fast Flash

Just applied it, but if lasts as advertised this is a great product.

At first you will hate this product. It will feel messy and you will use way to much and think its to expensive. After a couple windows you will get much cleaner with it. The best part to me is how it seals air out. After windows are installed you cant feel a draft whatsoever and this is before you foam the window. Not to mention I know my windows will never leak. Is it expensive yes but the flashing tapes arent cheap either and are a pain and they arent perfect by any means especially if your openings arent great or brand new. You can coat a cardboard box with this then fill with water. It will not leak. Then you can put a screw through the box and it still wont leak. You can see a video of this on YouTube. I can now do a 36x60 window which had extremely large jams at 8.5 inches. Did inside and out around insulation lockouts. This one window took less than 1 tube of this. If your doing a normal window with normal jams you would use alot less. If you are using more you are using to much. It spreads along ways but doesnt feel like it will so it can be easy to use to much. The other product joint and seem filler is awesome as well. Im just a homeowner putting my own windows in and wanted the best product I could find. I also do not believe foam alone stops air drafts well as other windows I have without this leak air like a siv around the interior casing and I had to caulk them. No such problem with this product before foam

Great stuff, easy to use and does exactly what it’s supposed to. Make sure you’ve got a sausage gun. Won’t work in a regular caulking gun.

GREAT

A little expensive at this price, but the product is great. Id use it anywhere I can.

Learned about it in the Build Show. Works really well, easy to use.

Applied product to pored concrete wall and sill plate. 1 1/2 inches on each to seal the sill plate and stop bug and air/water infiltration. Went on smoothly. Glad i saw this on the Build channel.

With weather in the 40s I waiting a few hours to get it to setup. Tried closing off the area with heat gun and space heater, but it didnt help. It didnt setup. Ultimately I gave up and installed the door in the wet stuff. Its messy. Cleaning the gun sucks afterwards. Needed acetone. That helps. Pricey. I did just the bottom of the door and it took an entire role and a half. Dont know maybe I used to much. Thats why it didnt dry? I would recommend if the weather is warm and your installing the windows door the next day maybe.

Pretty easy to tool even in cold temps, initial tack very good, sag resistant but self levels a bit (I probably used it where I shouldve used the joint filler in some cases.) Is just nice to work with...when paper towels are readily available to keep the spreading tool and all of ones clothing clean. I cant review the properties I cant test such as breathability etc but itd have to be far better in that regard than the off the shelf caulk type products.

Used on two new window frames and gave up. The material is sticky and hard to spread. One sausage might only be good for one and a half regular sized window. I ended up using good old window frame flashing tapes again.