uPVC Vertical Sliding Sash Windows

We have a variety of uPVC window types, select an option below:

Blending timeless design with modern technology

Senator Windows’ Vertical Sliding Sash is part of the Senergy range of windows and provides a truly long-term, cost-effective solution for period style properties. Designed to derive maximum benefit from high-performance materials, Senator’s technology works in harmony with traditional design to provide extra comfort and the practical features you expect from a modern home, without compromising its character or appearance. The uPVC window frames provide optimum strength, superior thermal properties and excellent weathering performance and will keep their pristine appearance for years to come.

Your Senator sales representative is there to help you choose the ideal styles, finishes and features for your home. Find your nearest dealership here.

Senator Windows’ Vertical Sliding Sash is part of the Senergy range of windows and provides a truly long-term, cost-effective solution for period style properties. Designed to derive maximum benefit from high-performance materials, Senator’s technology works in harmony with traditional design to provide extra comfort and the practical features you expect from a modern home, without compromising its character or appearance. The uPVC window frames provide optimum strength, superior thermal properties and excellent weathering performance and will keep their pristine appearance for years to come.

Your Senator sales representative is there to help you choose the ideal styles, finishes and features for your home. Find your nearest dealership here.

Features at a glance

Best suited for

Modern or traditional period style properties.

Appearance

Ovolo bead profile with traditional styling.

Security

A variety of top quality hardware including balances, pivot bars and locking mechanisms. Internally glazed for maximum security.

Durability

Strong, rigid framework with long-lasting finish.

Energy

Thermally efficient profile and high-performance seals reduce heat loss. A rated as standard with overall U-value as low as 1.4 W/m²K with double-glazing and as low as 1.3 W/m²K with triple-glazing.

Glazing

Standard 24mm double-glazing can be upgraded to 28mm triple-glazing.

Opening Styles

Traditional styling with decorative horn and optional Georgian bar available as face fixed or glazed in. One special feature of these windows is the ‘Constant Force Spiral Balance System’, which lets you open and close the window easily, and allows both sashes to tilt-inward for easy cleaning.

Guarantee

Backed by a 15 Year Guarantee*

Customise Your Sliding Sash Window

When you see a home fitted with Senator Windows, the first thing you notice is the homeowner’s choice of style, colour and finish. But there’s also a range of optional features beneath that sleek, elegant surface. You simply choose the combination of features that looks and functions best for your home.

Child-Proof Restrictor

The Senator uPVC Vertical Sliding Sash Window can be fitted with Angel Ventlock® restrictors, if specified. The restrictor allows you to open the window wide enough for ventilation but not wide enough to compromise security or child safety. In case of emergency, restrictors can be released as a means of escape.

Available Colours

17 Elegant Colours to Choose From

You can choose exactly the look you want from Senator’s wide range of colours. Whatever the location and style of your property, there is a colour and finish to suit your Vertical Sliding Sash Windows – 17 colours in total. And you can mix and match, with one colour on the outside and another on the inside. Likewise, in some cases you can have different finishes, wood grain on the outside and smooth white on the inside, for example, giving you more versatility and choice. Your Senator representative will be able to advise you of the various combinations available.

You can choose exactly the look you want from Senator’s wide range of colours. Whatever the location and style of your property, there is a colour and finish to suit your Vertical Sliding Sash Windows – 17 colours in total. And you can mix and match, with one colour on the outside and another on the inside. Likewise, in some cases you can have different finishes, wood grain on the outside and smooth white on the inside, for example, giving you more versatility and choice. Your Senator representative will be able to advise you of the various combinations available.

  • White
  • Cream
  • Claystone
  • Sage
  • Pebble Grey
  • 7038 Grey
  • Chartwell Green
  • 7012 Grey
  • 7015 Grey
  • 7016 Grey
  • 7016 Smooth Grey
  • Irish Oak
  • Classic Oak
  • Rosewood
  • Dark Green
  • Dark Red
  • Black

Handle Colour Options

  • White
  • Chrome
  • Gold

The images and data shown on this website are for illustration purposes only and are not binding in detail, colour or specification. Read more

Case Study:

Featuring uPVC Vertical Sliding Sash Windows

A townhouse renovation combining authentic period features with contemporary style and comfort.

Frequently Asked Questions

Have questions about our windows? You’re in the right place. Below you’ll find answers to some of the most common queries we get from homeowners—from product options and energy efficiency to installation and guarantees. If you need more help, our team is always happy to assist.

The cost of replacing your windows depends on a few key details—like size, material, style, glazing, and any extras you choose. Since every window is made to measure, just let us know what you have in mind, and we’ll be happy to provide a free, no-obligation quotation tailored to your needs.

While it can be more cost-effective to replace all your windows at once, some homeowners choose to do it in two stages—starting with the front and coming back to complete the rest later. It really comes down to what works best for you, your home, and your budget. We’re here to help you find the right approach.

Both materials are strong, energy efficient, and stylish—but there are a few differences worth considering before you make your final choice. Often, it comes down to personal preference, though in some cases one option may suit your home better than the other. If you’re not sure which is right for you, visit your local Senator showroom where you will see both materials on display and your Senator Dealer will be happy to help you decide.

There are some clear signs it might be time to replace your windows—like draughts, rising heating bills, or visible wear and tear. Upgrading your windows is a smart investment that not only makes your home more comfortable, but can also improve your BER rating and help lower your energy costs in the long run.

How often you’ll need to replace your windows depends on their quality, type, and the conditions they face over time. Most people will only replace their windows once or twice in a lifetime—so it’s worth having trusted experts by your side to help you get it right.

To learn more about available grants for energy-efficient windows in Ireland, visit the Sustainable Energy Authority of Ireland (SEAI) and your local authority websites. You’ll find up-to-date information on current supports to help make your home warmer, more efficient, and comfortable all year round.

Let’s Get Started

Book a consultation with your local Senator window or door expert or get a quote for your next project.