What is a sash balance?
A sash balance (spring balance) is a spring loaded device used to counter-balance a sash in a box sash window. Sash balances eliminate the need for sash weights, sash cords, and pulleys. Over time sash balances can need replacing.
What are the different types of window balances?
Generally speaking, there are four main types of window balance: block and tackle window balances, coil window balances, weight and pulley window balances and spiral window balances.
What is window sash replacement?
Designed to fit into existing window openings, “replacement” windows are. double-hung sash units inside thin frames. They’re a way for owners of older homes to get the benefit of today’s energy-efficient windows without ripping out existing trim and siding.
What is a ballast on a window?
Traditional double-hung windows operate by way of a sash and balance system. This is sometimes called a sash and ballast system, because the sash is counterbalanced by a weight. It provides easy access to the sash cord and balance.
What are double-hung windows?
What is a Double-Hung Window? A double-hung window, also commonly referred to as a double-sash window, is a type of window that has two operable sashes that slide up and down. There are two main operable parts of a double-hung window — the top sash and the bottom sash. They are both able to open to provide ventilation.
Why are sash windows called sash?
MOST probably, sash windows were not ‘invented’ but developed from the simpler horizontal sliding sash (known today as the ‘Yorkshire’ sash). They are supposed to have come from Holland in the seventeenth century. However, W. Horman, in his Vulgaria , printed in 1519, writes: ‘Glasen wyndowis let in the lyght . . .
What is the upper sash of a window?
The sash is the moveable part of a window made up of the vertical and horizontal frame that holds the glass. On a double-hung window, the check rail is the part where the bottom part of the upper sash and the upper part of the lower sash come in contact.
How do window sashes work?
How do Traditional Sash Windows Work? A traditional sash window comes with two sliding sections, also called sashes. They slide up and down, using a pulley and weight mechanism inside the window frame. When a sash opens, the weight counterbalances with a weight inside the window frame.
How do you measure for a replacement sash?
SASH OPENING HEIGHT. Carefully measure the inside height of the sash opening from the inside of the head jamb to where the inside face of the bottom sash meets the sill behind the stool. Measure in three locations: left, right and center. Use the small- est measurement of the three and round down to the nearest 1/8″.