Liniar Patio Doors

Enhance your home with our revolutionary uPVC patio doors, offering low profile thresholds to cater for the needs of today’s homeowner.

Liniar Flush Sash

Our Flush Sash windows are an attractive, low maintenance and thermally efficient timber alternative that is also 100% recyclable and lead-free.

Key Details

  • Perfectly Designed

    Not only do they look gorgeous, but
    the 50mm x 62mm single rebated sash design sits snugly in the 70mm outer frame.

  • Multi-Chambered

    Manufactured using multi-chambered
    uPVC Liniar profile for optimum thermal efficiency.

  • Tailored To You

    Why not customise our Flush Sash
    windows with key-locking monkey tail handles and dummy stays.

  • Yale High Security Locking

    Our Flush Sash windows can be
    supplied with Yale high security Shootbolt locking, which offers a Lifetime Security
    Guarantee, 10 year mechanical guarantee, is accredited by Secured by Design and
    tested to the latest BSI security criteria.

  • Low Maintenance

    The traditional look of timber
    without the maintenance. You’ll never need to sand, treat or paint them.

  • Beautiful Aesthetics

    The frame and sash sit flush when
    closed, recreating the look of traditional timber joinery.
    Our Flush Sash window incorporates a dedicated slimline sash, allowing the face of
    profile to sit flush with our existing 70mm EnergyPlus outer frame.

  • Product Features

    The Flush Sash Casement window gives
    you that traditional timber appearance,
    whilst still being ultra-low maintenance and 100% recyclable.

Features & Benefits

Our Flush Sash window Is a 70mm product and takes a standard 28mm sealed unit. Comes in a range of six colours. Available with key-locking monkey tail handles and dummy peg-stays. Fabricated and hand finished to the highest standards.

Windows that pass the test

You and your home are valuable and at ColdSeal we take
this very seriously. That’s why we offer Yale locking on our window products as they are one of the
most recognised and respected names in home security.

Window and door colours

Colour Options

The right colour to suit your home. Choose from traditional white PVCu to striking Anteak Teak to make a home look stylish, modern and chic.

Colours available

Agate Grey
Anthracite Woodgrain
Antique Teak
Basalt Grey
Black Woodgrain
Chartwell Green
Agate Grey
Anthracite Woodgrain
Antique Teak
Basalt Grey
Black Woodgrain
Chartwell Green
Window and door glass supplier


Sometimes you need to protect your privacy, which is why we offer a range of obscure glass.

Glass styles available

uPVC Window handles

Hardware choice doors

Our hardware has been selected to perfectly complement our doors and with partners such as Yale and Mila, we can provide the perfect combination.

Our range

Designed to meet the high standards and security that homeowners have come to expect for their home

Be inspired

Our window and door products can bring any house to life, from our
innovative Refine sash with no welds to our range of high-quality composite entrance doors. We aim to
inspire any homeowner to find the product to suit their needs.


Book a free home survey

If you like the look of our products & want to take the next step in transforming your home? A good place to start is to book free home survey

Schedule Now

Design your windows or doors

Try our simple tool and find the perfect window or door for your property. Choose the colour, handles, and accessories at the touch of a button.