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

298 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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Standard Sill Depth

Standard Sill Width

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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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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

Good purchase!

My dog totally trashed our window sill at one window in particular. We just had our house painted and I wanted to avoid damage to the new paint. I bought Sill Shields - arrived on a timely basis and as advertised, installation was very easy and they have worked great. Dog is happy and I am happy. The only other observation I would make is that I did not realize that there are five coin-size velcro mountings keeping it in place effectively and that they would be so apparent when looking at the window sill. Not a big deal, overall I am quite pleased and would buy them again if needed.

Reviewed by: William from Chapel Hill, NC on 4/15/2025

Amazing Product!

I ordered these sill shields several years ago. These things are indestructible. I ordered these after my large and destructive dog gouged deep ruts into the wood sills on three windows of my home. I didn’t have much hope that these would last because said dog has destroyed couches, chairs, and has literally broken three window panes on her quest to guard the house from anything that comes within 50 feet of our home. The install was easy. I did not use the provided Velcro. It may have worked, but since my windowsills were already ruined, I used a wide and long strip of industrial Velcro from a roll I got at Wal-mart. My dog has continued her destructive shenanigans and put these sill protectors through the most rigorous use. I don’t know how it’s possible, but they haven’t budged an inch and they still look brand new. Not one scratch! The owner was professional and easy to work with. I would highly recommend these.

Reviewed by: Cami Brewer from The Woodlands, TX on 4/1/2025

Perfect Protection for Your Window Sills

We love these sill protectors. Gary was wonderful to work with. The shields arrived quickly, were well packaged, and fit perfectly. They are a great product that will protect our window sills from damage for years to come.

Reviewed by: (Verified Buyer) Deb from Ohio on 3/23/2025

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