FQA: Building Regulation, Lead Times, Delivery Areas

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We currently work on a 5 (Working Day ) lead time on glazed frames and 3-5 working days on Unglazed frames (Delivered ) on stock profiles.
If you require an urgent frame quicker than our standard turnaround time, please get in touch with our sales department, who will be glad to see whether we can meet your requirements.(*subject to terms & conditions) 01617637977 

For more information check out Fensters guide to lead times

Yes, please confirm with the team that your order is ready for collection, and we will prepare it. Please be advised we cannot guarantee collection outside of regular operating hours. 01617637977

Glass-to-glass cornerless windows are designed without a traditional corner post, allowing two panes of glass to meet cleanly at a corner. This creates an uninterrupted glazed corner that maximises natural light and enhances the visual connection between inside and outside spaces.

Are glass-to-glass cornerless windows suitable for uPVC?

Yes. When correctly designed and manufactured, glass-to-glass cornerless windows can be produced in uPVC. Fenster manufactures these systems using REHAU profiles, ensuring the window delivers the required performance while achieving a clean, contemporary appearance.

Where are Fenster’s glass-to-glass, cornerless windows manufactured?

All glass-to-glass cornerless windows from Fenster are manufactured at our factory in Bury, Greater Manchester. Producing them in-house allows us to maintain quality control and support trade customers with practical guidance throughout the process.

What colours and finishes are available?

Fenster glass-to-glass cornerless windows are available in the full range of REHAU colour options. This includes modern finishes such as smooth Midnight Black for a contemporary, aluminium-style look, as well as traditional timber-effect foils, such as Turner Oak. This flexibility allows the windows to suit both modern and more traditional properties.

Are glass-to-glass cornerless windows suitable for extensions and new builds?

Yes. These windows are commonly specified for rear extensions, open-plan living areas, garden rooms, and contemporary new builds. Suitability depends on the overall design and structural considerations, so early discussion is recommended.

Do glass-to-glass cornerless windows require special structural support?

In most cases, yes. While the corner itself is glazed, the surrounding structure must be designed to support the opening safely. Fenster works with installers and specifiers to discuss feasibility and ensure the window design aligns with the project requirements.

Are these windows available directly to homeowners?

Fenster supplies glass-to-glass cornerless windows to the trade. Homeowners should speak to their builder or installer, who can then contact Fenster to discuss specification, options, and suitability for the project. Fenster can recommend an installer if you don't have one. 

How do I get more information or request a quote?

As this is a new product offering, the best way to get more information is to speak directly with the Fenster team. We can discuss design intent, colour options, and practical considerations before progressing.

At Fenster, our dedicated pricing team will provide a detailed quotation within 24 business hours. To contact us, email nathan@fenstertradeframes.com or markb@fenstertradeframes.com, call 01617637977 or WhatsApp to 07824433050

Yes, check out  Home - REHAU Answers for all up-to-date information on standards, regulations and U Values. 

To ensure that all your requests meet current standards, we recommend you use the Rehau Answers Online Tool. This answers all Compliance and Specification queries. Home - REHAU Answers 

At Fenster, we deliver to most areas across Mainland UK. Delivery schedules depend on your location, so for details on delivery days in your area, please get in touch with our sales team at 01617637977

Yes, we have a dedicated Digital Sales Marketer. If you would like support, please email info@fenstertradeframes.com or call 01617637977 and ask for Sam 

A broken window or door can be stressful, but acting quickly can help ensure your safety and minimize further damage. First, secure the area to prevent injuries, document the damage for insurance purposes, and check whether your home insurer covers repairs. If needed, arrange for a professional repair or replacement.

For a detailed step-by-step guide on what to do next, read our expert advice here:
➡️ What to Do If Your Window or Door Is Broken: A Step-by-Step Guide

 Yes. The Mahogany foil finish is being discontinued from the REHAU range. Existing windows remain fully supported, but exact colour matching may not be possible in the future. Trade Window & Door Insights | Installer Blog | Fenster Trade Frames 

Can uPVC windows be sprayed to match Mahogany? 

Spraying uPVC frames is not recommended as a like-for-like replacement. Sprayed finishes do not match factory-applied foils for durability, colour depth or long-term consistency. Trade Window & Door Insights | Installer Blog | Fenster Trade Frames 

What should I do if I need to replace Mahogany windows?

Homeowners can either replace now to maintain consistency, or consider a phased upgrade using an alternative colour for part of the property, such as the front elevation. 

Yes. Modern REHAU window systems offer improved thermal performance, reduced heat loss and better comfort compared to older installations.  Trade Window & Door Insights | Installer Blog | Fenster Trade Frames 

 Mould and condensation usually occur when moist air cannot escape and collects on colder surfaces, such as windows or walls. Everyday activities like showering, cooking, drying clothes indoors, and even breathing contribute moisture into the air. Without adequate ventilation, this moist air settles, leading to condensation and ultimately mould. Improving airflow and ventilation is one of the most effective ways to prevent this issue.

Can condensation really affect my health?

Yes. Condensation by itself is harmless, but it creates the ideal conditions for mould growth. Mould releases tiny spores into the air that can irritate the airways and trigger symptoms such as coughing, wheezing, a runny nose, or worsening asthma. People with allergies, children and older adults are often more sensitive. Good ventilation helps reduce moisture, thereby limiting mould-related health issues.

How do ventilation and trickle vents help reduce mould?

Ventilation helps remove moist, stale air and replaces it with fresh, drier air. Trickle vents are small, adjustable openings built into window frames that allow airflow even when windows are closed. This continuous airflow reduces condensation on windows or walls, which in turn helps reduce the conditions under which mould can grow.

My windows don’t have trickle vents. What can I do?

If your windows don’t have built-in trickle vents, first check whether they have a lockable night-vent setting. This allows the window to sit slightly open in a secure position, increasing airflow. Use this option with caution, especially on ground-floor windows, as even a small opening can impact security. If your windows cannot be vented in this way, retrofit trickle vents may be an option, and Fenster Trade Frames can assess suitability for your frames.

What simple steps can I take to reduce condensation at home?

You can reduce condensation with everyday habits, such as:

· Use extractor fans when cooking or showering 

· Keep kitchen and bathroom doors closed during use 

· Dry clothes outside where possible or near ventilation 

· Maintain steady heating rather than allowing rooms to become very cold 

· Leave small gaps between furniture and walls to allow airflow 

· Wipe away visible condensation to stop mould taking hold 

Any small improvement in airflow helps reduce moisture buildup.

My mould seems to come back quickly. Is there a long-term solution?

If mould keeps returning, it usually means moisture levels remain too high. Long-term solutions include improving ventilation (e.g., trickle vents or mechanical extract fans), ensuring consistent heating, and controlling indoor moisture sources. In some cases, insulation improvements may also help. If you are unsure what will work for your specific property, Fenster Trade Frames can provide an assessment and practical recommendations.

Can landlords be held responsible for mould and condensation problems?

Yes. UK housing standards and landlord responsibility guidance expect rental properties to be kept in a condition that does not harm tenants’ health. Persistent damp, mould and poor ventilation issues should be addressed promptly. Providing effective ventilation, heating, and maintenance support helps protect tenants and support landlord compliance.

How do I know if my home has a ventilation problem?

Common signs include:

· Frequent condensation on windows or walls 

· Visible mould spots in corners, ceilings or window areas 

· Damp, musty smells 

· Wet patches around windows or behind furniture 

If you notice any of these signs regularly, improving ventilation is a good first step. When needed, Fenster Trade Frames can discuss retrofit options or window upgrades.

Can improving my windows reduce condensation?

Yes. Modern windows with good thermal performance and built-in trickle vents help reduce cold surfaces where condensation forms. Energy-efficient glazing and frames also reduce heat loss, meaning warm air does not cool as quickly, and moisture is less likely to condense. If your existing windows are old or lack ventilation features, replacement or upgrades may be worth considering.

Disclaimer

This content is provided for general information only and does not constitute professional, legal, medical or environmental advice. Fenster Trade Frames makes no warranties regarding the accuracy or completeness of the information provided.

Property owners and landlords remain responsible for compliance with UK housing and safety regulations. Fenster Trade Frames accepts no liability for any loss, damage or health impacts arising from reliance on this guidance. Professional advice should be sought where necessary.