Invisiline

Windows, redefined.

Sleek In Design. Exceptional In Performance.

For every style of property there’s a perfect style of window; a window that will enhance architecture, improve natural lighting, and deliver on thermal performance. Our new line of Invisiline windows make for an outstanding choice for every property where a spacious feel and plenty of light are top priorities.

Uniquely designed with modern technology to incorporate the best of traditional appeal without compromising on style or performance, our Invisiline windows are constructed to a superior quality and finished with elegance.

If you’re searching for that classic timber window look, with all the ease of a modern window designed to excel, then Evolution’s range of Invisiline windows could be the solution that you’ve been looking for.

Innovative ConstructionBreath-Taking Natural Light

What sets our Invisiline window apart from other traditional wood-effect windows, is the sleekness of the design which allows for an amazing quantity of natural light to flood your rooms.

Invisiline windows are constructed with a 127mm sightline across mullions, which compared to the standard 162mm, creates an incredibly sleek window design. The thinner frame and larger glazing area really deliver when it comes to improving the natural light inside your home.

Superb FinishesTailored Appearance

You don’t need to compromise on appearance by choosing a thinner window frame. Invisiline windows are the perfect choice for a customisable window that is tailored to work with the uniqueness of your home.

All of the popular foil colours that we have available at Evolution can be applied to the Invisiline window, as well as a spectacular range of additional customisable options that will turn an Invisiline window into the perfect window for your property.

Enhanced PerformanceEnergy Efficiency

The A-rated construction of Invisiline windows will also help you to combat rising energy bills. Thermally efficient and crafted with excellence, these windows will allow to you achieve a sleek and clean finish without having to worry about increased energy loss.

Evolution are known for attention to performance as well as aesthetics, so you can relax knowing that your home will be warmer, cosier, and less expensive to heat with an Invisiline window.

Dedicated to DesignTraditional Finish

The thin design of the mullions in an Invisiline window makes it the ideal option for properties in conservation areas where style, finish, and design are of the upmost importance to preserve the look of a property and neighbourhood.

With a finish that replicates the look of traditional timber and blends seamlessly into the architecture of your property, Invisiline windows will preserve and enhance the look of your home for optimum aesthetic appeal.

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Evolution Invisiline Windows Technical Features

Item

Specification

Framework:

70mm or 82mm system
Stormproof or flush sash
Internally glazed
Fully integrated dual weather seals
Galvanised steel reinforcing built in where necessary
A range of deep, timber look cills available
Timber style mechanical transom and mullion joints

Glass:

Windows glazed with having a soft-coat low-emissivity coating, warm edge spacer bars and argon gas fill.
Toughened glass to BS6262 Class A

Glass Options:

Double or triple glazing available
Various patterned glass for varying degrees of obscurity
Laminated glass, acoustic glass and solar control glass options
Square and diamond leads and coloured glass options

Locking and Hardware:

Multipoint locking with shoot bolts
Key locking handle
Night vent positions available on windows only
Traditional wrought iron handles and peg stays (working and decorative), standard cranked handles and contemporary Ventiss handles and
peg stay (working and decorative) range available
Traditional wrought iron - Black and Pewter

Colours:

Standard range colours – White, Black, Bright Chrome, Satin Chrome, Bronze, Gold
Ventiss range colours – White, Black, Gold, Gunmetal, Chrome, Satin Chrome
Ventiss Designer range colours - Chrome & White, Chrome & Black, Chrome & Gold, Chrome & Gunmetal, Chrome & Satin Chrome

Window Hinge Options:

Fire Exit/Easy Clean Hinge
Security claws
Child Restrictors

Internal Bead Finish:

Ovolo beads

Each Georgian Bar Cut to Size, hand finished, and factory applied to the glass, inside and out. We never apply our bars on site:

Putty outside, Ovolo inside
20mm Bar and 36mm Cottage style bar internal and external available
All Georgian bars match the colour of the window, with a wood grain finish

Energy Rated Options:

U-Values as Low as 1.1Wm2K subject to overall glass specification
Energy Rating of A can be achieved.

Window Frame Colour Options
Outside Finish	Inside Finish
White Grain Olive Grey Agate Grey Black Wood Cream Wood Evolution Oak Smooth White Anthracite Grey Rosewood Colour match to any RAL colour White Wood	White Grain White Wood White Wood White Wood White Wood White Wood Smooth White White Wood White Wood Colour Match to any RAL colour Colour Match to any RAL colour

Committed To Quality10 Year Guarantee

Renowned for exceptional service at every stage of the design, manufacture and installation process; our customer care team ensure each customer receives the very best experience. We’re so confident of the enduring quality of the windows and doors we produce, we give a 10 Year guarantee on all Evolution products, providing each customer with the ultimate peace of mind.

latestBlog posts

July292025 Advice Articles

Replacing Windows in a Conservation Area: What You Need to Know About Article 4 Directions

Some guidance about how building regulations interact with replacing Windows in a Conservation Area. And in particular what You Need to Know About Article 4 Directions Read more

February042025 Windows

How uPVC Double Glazed Georgian Windows Can Boost Your Home’s Energy Efficiency

Energy efficiency is a key factor in maintaining a comfortable home, keeping your energy bills low, and preventing issues like dampness from forming. The type of window frames and glazing you choose plays a crucial role in achieving this. For those who love the classic charm of Georgian window frames but also want to improve their home’s energy efficiency, selecting Georgian windows with uPVC frames and double glazing is essential. Read more

January232025 Windows

The Low-Maintenance Appeal of Modern Flush Casement Windows

When it comes to choosing new windows, one of the most significant considerations is maintenance. Nobody wants to spend hours sanding, painting, or scrubbing frames. That's where modern flush casement windows stand out. Combining sleek aesthetics with practicality, these windows are not just a design choice but a lifestyle upgrade. This is where the option of flush casement windows comes in. Made from an attractive timber alternative, these frames are aesthetically pleasing and virtually maintenance-free. In this blog, we have explored the benefits of flush casement windows, their standout low-maintenance features, and how we can help enhance the exterior of your home and keep the interior warm and weatherproof year-round. Read more

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If you can’t visit your local Evolution showroom but still want to find out more about our beautiful handcrafted windows and doors then simply order a brochure today and be inspired.

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Speak to one of our friendly, experienced designers to discuss your requirements and individual project needs. We will provide you with advice and a detailed, no-obligation quotation.