I believe those shims are installed to keep the sash straight and from rattling around when it is opened and closed. Or they could be part of the spring assisted lift system of the window. The piece that is in view may be attached to a mechanism on the edge of the window which compromises the spring lift mechanism.

What is a window Stile?

Stile – The vertical edges of a casement. Jamb – The two vertical sections running up the outer edge on each side of the window frame. Cill or sill – Sits horizontally across the bottom of the window frame.

What are the things inside windows called?

Most windows have two main components, the frame and the sash. The frame is the outermost area, or casing of the window, and inside it are the sash and the glass. The sash is the area inside the frame, the part that holds the glass.

What is the plastic around the window called?

That plastic strip is called glazing bead.

What are the parts of a window frame called?

The head is the main horizontal part forming the top of the window frame. Jambs are the main vertical parts forming the sides of a window frame. A sill is the main horizontal part forming the bottom of the frame of a window.

What are the parts of a window sash?

Understanding sash windows – the individual parts

  • Sash, or sashes. There will usually be two sashes, which are the frames that contain the glass. …
  • Box frame. This is the window frame that contains the sashes.
  • Sash cord. …
  • Sash weight. …
  • Staff bead. …
  • Parting bead.

What is a window Staff bead?

D – Staff Bead – This is the detailed trim that frames your sash box internally – it keeps the sashes in place in the sash box. A Ventrolla staff bead is installed on a removable popper system and houses more draught proofing pile.

What are the parts of a sliding window called?

Anatomy of a Window Frame

  • Head. The horizontal piece at the top of the window frame is called the head.
  • Sill. The window sill is the horizontal bottom piece of the window frame. …
  • Jamb. The jambs are the vertical sides of the window frame.
  • Apron. …
  • Weep Holes.

What is window stool moulding?

Window stool is an interior moulding that trims the window sill at the base of the window opening. It is a decorative molding that is part of the overall interior window trim. Installing window stool is not a difficult task; however, attention to detail is important in order for the stool to fit correctly into place.

What is a window trim stop?

A stop molding is a piece of wood that holds another part of the architectural element in place, here are a few examples that quickly come to mind; a window stop that holds the bottom sash of a double-hung window in place.

What are window seals?

Not to be confused with a window sill, window seals refer to the seals that modern windows have to hold in the air between multiple panes of glass.

What is a window extension jamb?

In turn, jamb extensions refer to wood or another material that adds width to the jamb so that the window fills the entire opening depth from the exterior to interior sheathings (often plywood or oriented strand board on the outside and drywall on the inside).

Which of the following windows consists of an upper sash and a lower sash and slides?

double-hung window

The double-hung window is the most common style of windows. It consists of “top and bottom” upper and lower sashes that slide vertically over each other in separate grooves in the side jambs.

How do I remove muntins from windows?

How to Replace Window Muntins

  1. Cut along both sides of the damaged horizontal muntin on the same side of the glass with a utility knife to free it from glazing, caulk or any type of glue that may be holding it to the glass.
  2. Insert the tip of the utility knife between the glass and the horizontal muntin and pry up gently.

What is the name of the horizontal structural component on the bottom of a window frame?


Sill. Sometimes referred to as the “stool” of the window, the sill is the main horizontal part that forms the bottom of the window frame.

What holds a window in place?


The sash holds the glass in place. These are the grids of the window. They can be decorative and just snap into place over the glass, or they can help hold the glass in place, dividing the glass into sections often referred to as lights. Muntins are installed on the outside or inside of the glass or both.

What are the five parts of the window frame?

Window Frame

  • Sill – The lowest part of the window frame.
  • Head – The highest part of the window frame.
  • Jamb – The vertical sides of the window frame.
  • Apron – A piece of decorative trim installed beneath the railing or sill.

What are the 5 parts of a window?

Parts of a Window

  • Head. The main horizontal member forming the top of the window or door frame.
  • Jamb. The main vertical members forming the sides of a window or door frame.
  • Frame. The combination of head, jambs and sill to form a precise opening in which a window sash or door panel fits.
  • Glazing. …
  • Pane. …
  • Sash. …
  • Sill. …
  • Muntin Bar.

What are muntins for?

Muntins provided critical structural support to the wall, ensuring the weight of the window was balanced vertically. Muntins today refer to any kind of vertical divider, whether for replacement windows, doors, furniture or wood panels. Muntins are primarily for decoration nowadays as opposed to structural support.

What are fake muntins called?

Some window grills are imitation muntins, meaning they appear to look like muntins, but they don’t truly separate individual panes of glass. Instead, they attach to one large piece of glass. This often appears on newer homes, as it provides the same beauty of muntins without the risk of causing as much draft.

What is the difference between a muntin and mullion?

Mullion/muntin: A mullion is a heavy vertical or horizontal member between adjoining window units. Muntins are the narrow strips of wood that divide the individual panes of glass in a traditional sash.