Standard Sill Shields

Sill Shields fix a common problem in under 2 minutes!

The Sill Shield™ - the original sill protector is still the best and toughest windowsill protector on the market! Unlike the others, the Sill Shield™ :

IS AVAILABLE IN WHITE OR CLEAR IN SIZES THAT FIT STANDARD WINDOWSILLS
PROTECTS AGAINST SCRATCHING AND IMPACT
COMES DOWN 1 INCH IN THE FRONT TO WRAP AROUND THE SILL EDGE
USES SPECIAL MOUNTING COINS FOR TOOL-FREE INSTALLATION IN JUST SECONDS
HAS MY UNIQUE LIFETIME GUARANTEE (AS LONG AS I'M ALIVE, THEY'RE GUARANTEED...WHEN I'M GONE, YOU'RE ON YOUR OWN)

The Sill Shield™ price will reflect the selected Sill Shield Width: $17.99 for the 23 1/2" Width, $18.99 for the 29 1/2" Width, and $19.99 for the 35 1/2" Width.

Need a different width and/or depth? We offer custom sizes as well! I can also help if you need a notch or other customization.

If you have any questions, please call 845-477-0737

301 Review(s)

Price based on width.

$17.99 to $19.99

Part Number: WSS

If none of the standard sizes fit your needs, Please check out the Custom Sill Page

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Welcome to my Sill Shield window sill protector site, the only site for custom shields and standard shields in both clear and white. All of my Sill Shields have a 1” drop in the front to wrap around the corner of the sill. If you have questions, you can call 845-477-0737.

After years of constantly repainting my sills, they finally got to the point where the wood was so damaged, they had to be replaced. I wasn’t able to find a product to protect the new ones, so I created the first Sill Shield. My sills are white, so I chose a white outdoor grade U.V. material to resist yellowing.

It worked so well that I decided to offer it to everyone in a few standard sizes. They were an instant success but I began to get requests for more standard sizes, so now there are 9 and from those people with colored or natural wood, requests for a clear version. For the clear, I chose a material called PETG, a tough, clear material best known for making blister packs.

I asked a few select pet product companies to help distribute the standard sizes of my product and of course, there have been a few copycats but none of those approach the quality of my original Sill Shield. That’s why I’m the only one to offer my exclusive lifetime guarantee: As long as I’m alive, they’re guaranteed - When I’m gone you’re on your own.

Please see the size chart below to check out the standard sizes. If none of the standard sizes work for you, then check out my custom size Sill Shield page.

Sill Shield Windowsill Protector Standard Sizes

Sill Shield Windowsill Protector Standard Sizes

If you need special customization, such as a notch for a crank, email me at [email protected] and please send a picture if possible. Window Sill Guard with notch cut out

Thank you,
Gary Castelle

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Great Product

Ordered one and liked it so much we ordered two more. Installed the white guards and they look great and so easy to do. Shipping was prompt. Highly recommend

Reviewed by: Paul Manzone from Mattapoiset on 7/30/2025

Ms.

I just received my first order - these sill guards are fantastic! They are clear, durable, and easy to install. I was afraid they would be too obvious, but they are hardly noticeable. I can enjoy my dogs with them destroying my window sills.

Reviewed by: Janee Hanzlick from Kansas on 7/26/2025

N/A

These sill protectors were exactly what we were looking for. Dogs, squirrels outside and windowsills not mix! A definite recommendation!

Reviewed by: Doug from Maine on 7/26/2025

Sill shields

These were exactly what I needed!

Reviewed by: Lori Maag from New York on 6/11/2025

Great!!

The sill protector is fabulous. Easy to install. Gary gave great advice. My dog can look out the window to his heart's content now

Reviewed by: Paul from Indianapolis on 5/3/2025

Standard Sill Shields

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