Carlson Sliding Sash Windows

Timber Sash windows can add charm to any building, old or new. Timber is one of nature’s masterpieces. Strong, renewable and a natural insulator, it offers superb performance and comfort for you and your home.

  • Traditional & Authentic Designs
  • 10 Year Product Warranty
  • Custom made to meet 21st century needs
  • Double glazed hand-crafted excellence

Sliding Sash


Window Weights and Cords


Window Spiral Balance

The sashes slide up and down using traditional pulleys with heavy duty cords and weights.

Available in Double Glazing.

The sashes slide by means of partially hidden pre-tensioned springs, with a smooth, easy-to-use mechanism.

They can be fitted into smaller reveals.

Available in Double Glazing.

Design Options

RAL 9001 Cream
RAL 9016 Traffic White
RAL 7038 Agate Grey
RAL 7016 Antracite Grey
Chartwell Green
RAL 6011 Resada Green
RAL 8016 Mahongy Brown
RAL 5007 Brilliant Blue
RAL 3020 Traffic light Red
RAL 9005 Jet Black

We have a wide selection of standard colours to choose from. Please note the colours shown cannot be reproduced exactly.

We can also offer any other RAL colour, for an additional surcharge.

Chrome Fitch
Chrome Hook Lift
Chrome D Handle
Chrome Cord Roller
Chrome Limit Stop
Chrome Ring Pull
Gold Fitch
Gold Hook Lift
Gold D Handle
Gold Cord Roller
Gold Limit Stop
Gold Ring Pull
Glass Options

We have a wide range of glass options available to suit your needs:

Safety Glass

  • Toughened glass (often referred to as tempered glass) can withstand 3.5 times more weight than ordinary glass. When tempered glass breaks it shatters into thousands of tiny pieces, which is also said to reduce the risk of injury.
  • Laminated glass is made up of two sheets of glass held together by a flexible plastic film. The glass will break when it is overloaded, but the glass fragments remain safely held together by a plastic film. This is to reduce the risk of injury should this glass break. Laminated glass also protects from UV radiation and can reduce the risk interior materials fading.

Obscure Glass – generally for privacy purposes.

Solar Control Glass – is used to reduce the effects of solar gain in south facing rooms.

Noise reduction glass – reduces sound transmission through the window.

Coloured Glass – is available in a variety of different forms.

Self-Cleaning Glass – is ideal for windows that are hard to reach and clean.

Obscure Glass Options
Obscure Glass Options
Window Operation Options

Traditional pulleys with heavy duty cords and weights enable sashes to slide up and down.


• Both Sliding
• Both Fixed
• Top Sliding – Bottom Fixed
• Top Fixed – Bottom Sliding


Sashes slide by means of partially hidden pre-tensioned springs.


• Both Sliding
• Both Fixed
• Top Sliding – Bottom Fixed
• Top Fixed – Bottom Sliding

Pricing & Ordering

Getting A Quote

At Carlson, our windows and doors are custom made to your exact design and specification. We have no standard price list, as we don’t sell “off the shelf” products.

Our quotation department prices each individual enquiry according to the measurements and style we receive, at the initial stage.

Lead Times

We offer reliable window & door delivery for most of our product range.

In general, window & door deliveries take approx. 6-8 weeks from when Order Confirmation Sign-Off has been received by Carlson.

However, in the current climate with Covid-19, pent-up consumer demand and temporary Construction Industry closures, we unfortunately cannot guarantee these lead times.  Therefore, we would ask you to discuss with us your delivery requirements, so that we can give you the latest up to date information.

Carlson supply and deliver windows & doors all over Ireland.


Once you have received a Quote and are happy to proceed, placing your window & door order is easy.

All you need to do is contact us, mentioning the person’s name shown on your Quotation and from there they can assist you in ensuring your order goes into production as speedily as possible.

Visit Our Showroom

Carlson has the expertise and experience to ensure your window and door project is completed with minimal disruption to your lifestyle.

When you are looking for windows and doors for your project, whether its for a new build or replacing your existing windows a visit to our showroom is a must.

There, one of our experienced staff can demonstrate our sliding sash windows in situ and discuss your individual requirements.

Features & Benefits

Our Sliding Sash Collection

Carlson offers both traditional Weights and Cords windows and the more modern Spiral Balances. Both these styles  come in a variety of sizes which means, combined with a wide range of tailoring options, we can create the very best window solution for you.

Our Sliding Sash windows are available with arched frames, decorative glazing bars, a choice of four horn types, as well as coming with extensive hardware options.

All the timber we use is FSC® certified and the range is carbon neutral. The standard specification is internally beaded and double glazed. It comes with a choice of bead profiles, Lambs Tongue or Ovolo, and externally can have a simulated putty profile.

For those customers who need specific conservation requirements, we also offer an alternate specification with glazing bars of just 24mm and double glazing as standard. They can also be ordered as single glazed,  utilising a special “putty type” option, which adds an extra aesthetic authenticity.

10 Year Product Warranty

Carlson Sliding Sash Windows are covered by a full 10 year Product Warranty.

This Warranty covers the Timber,  Ironmongery, Glass and Factory Paint Finish.

Thermal Performance

Whole Window can achieve – 1.4W/m²k

Independently tested and accredited to BS6375 Part 1, 2 & 3.

Factory Finish

All products are sold fully factory finished. They are treated with an organic preservative after all machining to ensure complete protection across all faces.

  • All coatings are water based, therefore, environmentally friendly.
  • After basecoat, components have end grain sealer applied.
  • Opaque colours use stain blocking primer.
  • Top coats are high build breather paints.

What Our Clients Say

I recently purchased windows for my property which is c.150 years old. I wish to compliment the order process, the product quality of the windows and the superb quality of the works carried out by your fitting crew. I am delighted with both the end result and with my decision to choose Carlson. I couldn’t speak more highly of my customer experience journey with your company.


What Our Clients Say

May I take this opportunity to say that we are extremely pleased with the transformation of our house and especially with the efficient way the job was carried out. Special thanks to Roy for the way he managed the whole installation and his expert advice leading up to our decision to go with Carlson Windows.

John & Gemma

What Our Clients Say

My windows went in yesterday and they look wonderful, great finish and beautiful design, a first class product. The quality of the product is equally matched by the standard of installation, you can see the fitters take pride in their work, unfortunately, it has become the exception to experience this high standard of workmanship by fitters.

Thanks again for your help and advice.