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Free, no-obligation design consultation on every project
Beri Nyuy Group Limited

Windows

Flush Casement Windows

Sashes that sit perfectly flush with the frame for a refined, timber-style look.

Introduction

Why choose our flush casement windows?

Inspired by traditional timber joinery, flush casements give a seamless finish inside and out, complete with authentic mechanical joints and decorative hinges.

Available materials

uPVCAluminiumEngineered timber

Refined look

A sleek flush finish with no overlapping sash.

Heritage detailing

Authentic joints and butt hinges.

Warm & quiet

High-performance glazing as standard.

Low maintenance

All the charm of timber without the upkeep.

Available styles

Find your style

  • Side hung
  • Top hung
  • Georgian bar
  • Fixed

Available colours

Colours & finishes

Selected colour

Pure White

Two-colour / dual shades

Single colours

Try both colours in the visualiser

Technical

Product specifications

Typical specifications. Your surveyor will confirm the exact figures for your home.

Energy rating
Up to A++
Whole-window U-value
From 1.2 W/m²K
Glazing
Double or triple, argon filled
Locking
Multi-point, shootbolt
Guarantee
10 years (demo — confirm terms)
Joints
Mechanical, timber-style

Installation

How we install

  1. 1

    Free home survey and precise laser measurement by a qualified surveyor.

  2. 2

    Windows manufactured to your exact specification.

  3. 3

    Old frames removed with care; openings prepared and made good.

  4. 4

    New windows fitted, sealed and tested by our own trained installers.

  5. 5

    Full walkthrough, clean-up and removal of all waste.

Maintenance

Caring for your product

  • Wipe frames with warm soapy water every few months; avoid abrasive cleaners.

  • Lightly oil hinges and locking points once a year.

  • Keep drainage slots at the bottom of the frame clear of debris.

  • Check seals annually and contact our support team if you notice draughts.

Read our full care guides →

FAQs

Questions, answered

Customer reviews

What customers say about our windows

“Warmer house overnight”

The survey was thorough, the fitters were tidy and the difference in warmth was noticeable the same evening.

Chidi O. · October 2026

“Good value, good quality”

Competitive quote and no pressure selling. One handle needed adjusting and they came back the next day.

Joseph K. · August 2026

“Sash windows look original”

Our period home has its character back, without the draughts and rattles.

Aisha L. · August 2026

Read all reviews →

Get a quote for flush casement windows

Book a free, no-obligation design consultation. We’ll measure up, talk through options and give you a clear written quote.