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Your cart is empty.Jamsill Guard is an adjustable sill pan flashing designed to prevent water damage from window and door leaks. Made from quality, high impact ABS plastics, Jamsill Guard will not deteriorate or corrode over time. Jamsill Guard's simple design is inexpensive, easy to install, and more "user friendly" than comparable products on the market. Our multi-piece telescoping design allows on-site adjustablility to fit all rough openings and features sloped weep areas to help evacuate moisture to the exterior of the structure. Jamsill Guard is bonded together in the field using PVC cement, creating a one-piece sill pan flashing beneath your door or window. Since 1983 Jamsill Inc. has provided the construction industry with the pantened Jamsill Guard sill pan flashing we are proud to say 100% of our products are made right here in the USA. With over 2 million sill pans sold, Jamsill Guard is the industry leader for sill pan flashing. Select the depth of your frame ( 4 9/16 " or 6 9/16") and the size of the pan needed. Sizes are up to 40", up to 78", and up to 110". Install is simple and easy. Instructions included.
gacleader1
2025-08-27 14:17:25
I was nervous about using this, as I have never used a sill pan before. What concerned me was the depth. It was a perfect fit. It laid down with the edge overhanging my 3/8" siding on our shed, and the inside just slightly beyond the edge of the door sill. I think it would have been perfect if the outside siding had been 1/2", but not beyond that. The PVC cement set up quickly. It did however soften the underlying oil based paint I had put on the floor two days earlier, which is something I had done for extra protection, which is not normally done in a door installation. The price was higher than other sources, but instead of waiting a week or more from a Home Depot or Lowes, it was here the next day, so I can't complain.
LINDA R. MCKAY
2025-08-11 10:11:07
Was having leaking door issues on a newly installed exterior door, which still leaked whenever it rained despite having the installers/contractors come to try and fix it a few times. Ended up buying this product as a last resort, and decided to install it myself. Haven't had any issues since. Not one drop has gotten past this thing, it's fantastic!
PurpleDaisy
2025-08-02 14:26:23
Good product.
MICHAEL R. CARMOUCHE
2025-08-01 09:11:52
I am giving the product 5 Star’s because it is well designed and installing is very easy. However the price point is a bit steep. I have used other brands and have achieved like results. But if you need it in a hurry, the big box stores will take a lot longer to come in. Therefore I chose to get the product quickly and purchased it thru Amazon.
GG
2025-06-08 19:48:10
Good product, easy to install but I hear you can get a lower price at other places...
Last Resort
2025-03-01 15:58:03
I had used these in the past. I had to replace a door again after 20 years. 20 years later, the sill area under the failed door sill was like the day of installation. Comes with the glue. Just cut to fit. If you are building a home, demand your builder to put them under every door.
David N. Hollas
2025-02-23 18:54:52
Bought this hoping to retrofit my back door, then discovered that this is only for generic, standard new construction applications. My door sill sits on a ledge, so it wouldn't fit. If you are doing a remodel, or have an old house (like mine), this might not work for you. I ended up doing what I should have done from the start and made my own pan from sheet flashing.
William S
2025-02-11 16:58:53
As advertised. Center piece makes it easily adjustable, will not wear out., No excuse to not use.
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