Flush sash window profile cutout

Traditional style, contemporary look

Featuring sashes that sit flush within the external frame, these windows are a hybrid of modern and tradition. Manufactured in uPVC or timber to replicate classic designs, they are perfect for period homes. However, with stylish, slim-framed aluminium options available, they can provide a seamless fit into contemporary properties too.

Black aluminium flush sash windows
Close up of flush casement window

Energy-Efficient

Our flush sash windows can achieve Window Energy Ratings as high as A++.

Built to Last

Sourced from leading manufacturers for outstanding quality.

Highly Customisable

uPVC & aluminium profiles are available in a variety of colours, including dual options and woodgrain foils.

Soundproof

Double, triple, toughened, and laminated glass options available.

Outstanding energy ratings

uPVC flush sash windows are manufactured with multiple chambers that actively trap heat in the home. When combined with modern glazing they can achieve Window Energy Ratings (WER) as high as A++.

Our aluminium flush sash windows are manufactured using superior polyamide thermal breaks, which also give improved thermal insulation.

Perfect for conservation

The uPVC flush sash also provides a cost-effective solution to a range of problems associated with historic homes. With the look of traditional stained or painted timber, they require little maintenance.

uPVC flush sash external colours are in keeping with period properties and also meet the requirements of most conservation area offices.

map location graphic

Request a Quote Today

Request a free, no-obligation quote for any of our products using the form below. We will respond as quickly as we can.



    By submitting your details you confirm that you agree to the storing and processing of your personal data by Wise Designs as described in the privacy statement.

    Financing your purchase

    To help you purchase from us, we have partnered with Kandoo, a regulated credit broker to offer all our customers a range of highly flexible finance options. Kandoo is a comparison service that searches to find you the best Personal Loan option that’s right for you.

    Find out more