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Plan How to Install an Interior Transom Window in a Wall Between Rooms

Introduction to Planning

This Planning Section is all about measuring and planning for your installation. In this section you will:

  • Learn some basics and terminology -- that is, Transoms 101.
  • Choose your starting point for installation.
  • Study the install process.
  • Determine the measurements and decisions that need to be made.
  • Explore some variations to the typical installation. (Optional)

With your decisions our system will automatically create a customized set of planning steps and install instructions for your specific installation scenario. In all, the Planning Section should take you about 20 minutes.

So, this Planning Section is all about measurements — and only the decisions that affect sizes for you order.

P-INTRO

Planning 1: Basics and Terminology (Transoms 101)

Learn the parts of a transom, how measurements are made, and the role of the jamb for installation.

Video Summary

Transoms Direct sells transom window sashes -- that is, wood frames around glass.

  • Inside the wood frame, muntins separate glass into decorative panes called lites.
  • A transom pattern is the unique combination of the transom's perimeter shape with the design of its interior lites.
  • By adding a jamb to a transom you can adapt the thinner transom sash to a thicker wall.
  • Not all installations require a jamb.
  • If a jamb is required, the assembly of the transom sash with a jamb is called a transom unit.
  • When ordering, you specify the width and height of the transom sash only -- not including the jamb. This will become very clear as you watch the planning videos.
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Planning 2: Your Starting Point

Whether you are building a new home, completing a renovation or just adding a transom for a small project, we will help you determine your starting point for installation.

Video Summary

To determine the width and height for your transom sash, we first must consider your starting point for installation.

  • For new construction or renovations, rough openings are the most common starting point.
  • You may be planning a new opening that you have not created yet. in such case, we will help you frame a rough opening that fits the size of transom you wish to install.
  • If you have a completed home, you may be able to retrofit a transom into an existing finished opening.
  • Two types of finished openings are cased openings and drywalled openings. Both are suitable for a transom if the opening is tall enough for your needs.
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Select Your Starting Point

After viewing the video above, choose your starting point below.

 I will be installing a transom sash into a rough opening or new opening. (O-RO)

 I will be installing a transom and door into a rough opening or new opening. (D-RO)

 I have an ordinary door already installed in a wall, and I would like to add a transom above. (D-ONLY)

 I will be installing a transom into a rough opening or new opening. (W-RO)

 My home is complete, and I have a cased opening. (O-FOC)

 My door is already installed with a cased opening built above for the transom. (D-FOC)

 My home is complete, and I have a cased opening. (W-FOC)

 I plan to install my transom into a drywalled opening. (O-FOD)

 I have an installed door with a drywalled opening above for the transom. (D-FOD)

 I plan to install my transom into a drywalled opening. (W-FOD)

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