Therma Tru Sill Extender Installation

Our adjustable sills allow flexibility to adjust the sill cap vertically to close gaps over time helping to maintain a tight seal between the sill and bottom of the door.

Therma tru sill extender installation.

The purpose of these instructions is to illustrate how to install a therma tru door system using methods and materials that help eliminate water related leaks. Be sure to use at least an entire tube when caulking along the sub floor and follow sealant manufacturer s instructions. If a sill extender is used place a large bead of caulk at the junction of the extender and the sill. If a sill extender is used place a large bead of caulk at the junction of the extender and the sill approach.

3 place unit in opening and temporarily fasten. This extender kit is designed to work with masonite 3 0 x 6 8 36 x 80 and smaller inswing and out swing door systems. Caulking back side of brickmould. Important this extender kit must be installed prior to installing the door system in the opening.

Because door thresholds are made using different material your manner of installation should also differ according to the make. Door system frame extender install the sill extender onto the threshold by inserting the radius edge of the extender into the groove at the front outside edge of the threshold fig 4. Regardless of the material you need to lay your door threshold on top of your door sill and secure it there. To install the new door thresholds you need to refer to the manufacturer s instructions.

If the directions are closely followed the door system will have a. If a sill extender is used place a bead of elastomeric or polyurethane. Additionally place beads of caulk along the junction of the sill and the jamb and on the bottom surface of the jambs and brickmould. Is to illustrate how to install a therma tru door system using methods and materials that help eliminate water related leaks.

Installation with a sill pan. Rather than eliminate or change any steps that. Step 2 if applicable. Place the right and left sill pan ends onto the sealant beads and tightly.

Put the curved edge of the extender run a 1 8 bead of caulk in around the perimeter of the frame fig 6 and then apply the extension jamb sides onto the. Therma tru is not responsible for improper installation. The kit will extend the frame and sill from a 4 9 16 wall condition to 6 9 16. If the directions.