uPVC Flush Casement Windows – Classic Style, Modern Performance

Why Choose Our uPVC Flush Casement Windows?

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Heritage Timber Look

Flush-fitting sash sits perfectly within the frame for an elegant, period-correct design.

High Energy Efficiency

Multi-chambered Kömmerling 70mm profile ensures low U-values and superior insulation.

Low Maintenance & Weatherproof

uPVC construction means no warping, cracking, or repainting required.

Secure & Reliable

Reinforced frames, multi-point locking & toughened glass for maximum protection.

Customization Options

Wide range of colors, woodgrain finishes & heritage hardware styles.

Sustainable & Eco-Friendly

100% lead-free & fully recyclable uPVC frames.

Kömmerling Flush Casement Windows – Traditional Beauty with Modern Performance

Our Flush 70 system delivers the authentic charm of timber casement windows while incorporating the latest advancements in insulation, security, and weather resistance.

Kömmerling Flush 70
A Perfect Alternative to Timber

70mm multi-chambered profile for enhanced thermal & acoustic insulation.

Low U-values – As low as 1.2 W/m²K with double glazing & 0.8 W/m²K with triple glazing.

Slim sightlines – Elegant flush finish replicates classic timber windows.

Double & triple glazing compatibility – Improved energy efficiency & noise reduction.

Weatherproof & low maintenance – No warping, cracking, or repainting needed.

Optional mechanical or welded joints for an authentic hand-crafted look.

PAS24 certified for security – Multi-point locking & reinforced steel core.

Glass & Glazing Options – Insulation, Safety & Style

Double or Triple Glazing

Choose the best insulation level for your needs.

Low-E Glass

Reflects heat in summer, retains warmth in winter.

Argon-Filled Units

Extra insulation for superior thermal performance.

Toughened & Laminated Safety Glass

Enhanced security & noise reduction.

Obscure & Decorative Glass

Privacy options without sacrificing light.

Want better energy savings? Upgrade to our triple-glazed units with superior insulation & soundproofing!

Security Features – Advanced Protection for Your Home

Multi-Point Locking System

High-security locks for peace of mind.

PAS24
Certified

Complies with UK building regulations for burglary resistance.

Reinforced Steel
Core

Provides added strength & protection.

Optional
Restrictors

Prevents windows from opening too wide for child safety.

Heritage Colors & Woodgrain Finishes

Classic & Contemporary Color Options:

Smooth Finishes

White, Cream, Anthracite Grey, Black.

Woodgrain Effects

Golden Oak, Irish Oak, Rosewood, Chartwell Green.

Dual-Color Options

Different colors for the interior & exterior for full customization.

Traditional Hardware & Customization

Authentic Heritage Handles & Stays

Available in black, gold, chrome & antique bronze.

Mechanical Joints for a True Timber Look

Traditional hand-crafted appearance.

Astragal Bars & Decorative Glass

Create a bespoke heritage aesthetic.

Brochure & Downloads

Want to learn more? Download our full brochure with detailed specifications, color options, and design inspiration.

Download Brochure – Kömmerling Flush 70

Installation & Order Process

Request a Quote

Consultation & Measurements

Our experts guide you through the best options.

Order Confirmation

Once approved, we require a 25% deposit to begin production.

Manufacturing & Quality Control

Your custom flush casement windows are crafted to perfection.

Professional Installation

Our team aims to complete installation in one day, sending as many professionals as needed.

Final Inspection & Warranty

A quality check is performed on the installation day, and you receive a 10-year warranty along with your FENSA certificate via email within a few days.

Start Your Order Today