Prosoco R-Guard Fast Flash

Works pretty well.

Price point lower than the H*ber brand and worked just as well for the project.

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

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.

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

Pay attention to the date of manufacture, it has a shelf life of 12 months. Like others mentioned, product arrived 3 months out of date and didnt properly cure. This is a basic silyl modified polymer, there are lots of other better products out there. I ended up going with 3M Adhesive Sealant 740 UV, which was half the price and a much better product.

I use this product a bunch and really like it. It does take a while to learn just how to work with it so it is perfect. It does take longer to use than sticky tapes, but I feel the quality is much better. I wish they had different options when ordering on Amazon such as quantity amounts to help save on shipping. For example, order in increments of 5.

Great product! Good value

A great fluid applied flashing, works with a sausage gun. Working time of the flashing was as described, and it bonds very well.

Fantastic product, goes on easy, spreads with a bondo or stiff putty knife. First saw this on Risinger’s Build show on YT a couple of years ago. Wear gloves when applying. Already done 3 windows with this, will do 3 more this fall.