Select Page

Combination Window Options

Specifying a combination layout:

Step 1

Choose your windows

  • Style
  • Size
  • Electric or manual opening
  • Surface, Integral or Electric blinds

Step 2

Choose your window layout.

Combi System

Side by side on a horizontal plane


Bi-Lite System

One over the other on a vertical plane


Grid System

Multiple windows in grid formation


Step 3

Spacing between the windows.

  • 100mm
  • 50mm (on Combi System only)
  • 18mm (on Combi System only)

Step 4

Type of flashing required to suit your roof finish.

  • Tile Roof
  • Slate Roof
  • Plain Tile Roof (on Combi System only)

Step 5

Choose White or Pine Internal Support Trimmers.

The Keylite Technical Team will assist you to specify the optimum solution for your project and create an order schedule for combination windows and flashings.
Contact us

Keylite Roof Windows (GB)
T: 01283 200 150

Keylite Roof Windows (NI)
T: 028 86 758921

Optional Upgrades

White Painted Finish

A fresh and contemporary look. The wipe clean moisture resistant finish is ideal for use in kitchens, bathrooms and other humid areas.

Electric Operation

Electric Operation Fingertip control for out of reach locations.

Integral Blind

The clever built in shading solution with the blind enclosed between the glass and therefore is protected from moisture, dust or damage.

Install Components

Felt and Vapour Collars available.

Glazing Options

Keylite Roof Windows can be supplied with a wide range of glazing variants.


Designed to complement both renovation & new build projects in a traditional style. It is ideal for use in a period style property.

Smoke Vent

Designed to open automatically in the event of a fire.

Keylite Blinds

Choose easy fitting Keylite Blinds to control light and privacy in your home.

Why Keylite?

Learn More

Service & Support

Our technical experts are on hand to advise and assist you at the design and specification stage.

Patented Innovation

Our patents mean that other conventional roof windows do not share many of our extraordinary features.

10 Year Guarantee*

We are confident that our products will give trouble free performance throughout this period and beyond. *See Guarantee terms

Buy Online

Available in
Great Britain, Northern Ireland & Republic of Ireland

Get News & Offers

1 Step 1
FormCraft - WordPress form builder

Keylite Roof Windows is 100% Merchant Dedicated

Stay in the loop!

Be the first to know about our latest products and offers from Keylite.

1 Step 1
FormCraft - WordPress form builder
Share This


Oh Dear!

Your Basket Is Currently Empty.
Go to shop