Window sill molds have a variety of uses for as trim for windows, fireplaces and other uses, as well as a backsplash for countertop applications..

Standard (Straight Edge) Window Sill Molds

3/4” Sill Molds,  3-Cavity

_3-cavity-7-inch-sill

Part Number Description Width (A) Length (B)
22714 5" x 120” Sill - 3-Cavity 5" 120"
22715 6" x 120” Sill - 3-Cavity 6" 120"
22716 7" x 120” Sill - 3-Cavity 7" 120"
22717 8" x 120” Sill - 3-Cavity 8" 120"
 22721* 9" x 120” Sill - 3-Cavity 9" 120"
22718 10" x 120” Sill - 3-Cavity 10" 120"
* previously was 66943. Use 22721 instead.
 

3/4” Sill Molds, 4-Cavity

Part Number Description Width (A) Length (B)
22713 4 x 120” Sill - 4-Cavity 4” 120”
 
 

3/4” Sill Molds, 6-Cavity

22684-650
 
Part Number Description Width (A) Length (B)
22684

6 Cavity - each cavity 2" x 146" x 3/4" (5.08 x 370.84 x 1.9 cm)

2” 146”
 


CorniceSillProfile

Corniced Edge Window Sill Molds

Cornice Window Sill molds feature a corniced edge treatment (shown at left). Whether it be a window sill, a fireplace mantel, or a bookcase shelf, you can cast beautifully contoured corniced leading edge sills. These male molds can be cast quite easily without use of a female, so a female is not offered. To cast, pour the main mold volume normally, let it kick, then lay the mold on its side (it's built to accommodate that), and finish pouring the front lip.

Cornice Sill molds are available in a variety of lengths and depths:

 

180-18 - 5" Corniced Window Sill 5"D (3-7/8" Depth Inside) x 122"L - #228185

228185-2

 
180-18 - 5" Corniced Window Sill 5"D (3-7/8" Depth Inside) x 146"L - #2281851 

228185-2

 
180-18 - 10" Corniced Window Sill 9-3/4"D (8-3/4" Depth Inside) x 122"L - #22818
Use this mold as a window sill, fireplace mantel, or bookcase shelf. Block down using special End Stop Divider (Part Number 01086).  Mold net weight is 85 lbs (39 kg).

22818-2

* Mold net weight is 85 lbs (39 kg)

 
180-18 - 12" Corniced Window Sill 12"D (10-7/8" Depth Inside) x 146"L - #22874

22874-2

 

180-18 - 24" Corniced Window Sill 24"D (23" Depth Inside) x 146"L - #22873

22873-2

 

 

Related Accessories:

Special End-Stop Dividers are available for blocking Corniced Sill Molds down to any desired length. They are ordered based on the depth of the mold - either 5", 10", 12" or 24":

cornicedsillmoldex325


Before you Order a Mold:

  • Mold Construction Choice (Metamold or Vinyl Ester) - All molds can be ordered in our premium Metamold gelcoat, or more affordable Vinyl Ester gelcoat finishes. To order as Metamold, add an M to the end of the order numbers provided. To order as a Vinyl Ester version, add a V to the end of the number.

  • Female Mold Options - Most molds require a female mold or mold alternative. Learn about the types and differences here.

  • Mold Break-in Instructions - Gruber molds are preconditioned for your convenience. Learn how you should break in your new Gruber Mold.

  • Mold Track Option - Order your Gruber mold with Mold Track to easily move your molds through your production line