Frequently Asked Questions

It’s one of the most common asked questions in the industry after fitting new double (or triple) glazing: “I’ve just spent good money on my new windows and now they have condensation  – what’s gone wrong??”

99% of the time… nothing is wrong. Here’s what’s really happening:

• Old single-glazed or tired double-glazed windows were draughty and let heat escape fast.
• Your shiny new A++ rated windows keep nearly all the heat inside → the glass surface inside your room is now much warmer.
• Warm air holds a lot more moisture than cold air. When that warm, moist air touches something slightly cooler (like the glass in the window), the moisture instantly condenses into tiny water droplets.

• Bottom edge of the glass (coldest part)
• On the room-side surface only (external condensation is rare and usually only happens on very clear nights)

Common moisture culprits after a new install:

• Drying plaster & screed from building/refurb work (can pump litres of water into the air for weeks)
• New paint & carpets off-gassing
• More showers, cooking, drying clothes indoors now it’s properly sealed
• Fewer draughts = moisture can’t escape like it used to

Quick fixes:

• Wipe it off with a microfibre cloth – it’s just clean water
• Open windows for 10–15 minutes a couple of times a day (trickle vents too!)
• Run your extractor fans when cooking/showering
• Use a dehumidifier for the first few weeks (you’ll be amazed how much water it collects)
• Keep heating on low but constant rather than blasting it on/off

It usually settles down completely within 4–8 weeks once the house dries out and you get used to ventilating a properly sealed home.

Give us a call if:

• Condensation is BETWEEN the two panes of glass (means the seal has failed – covered under warranty)
• Water is pooling in the bottom of the frame (drainage issue)

Otherwise, relax – a bit of temporary condensation is the clearest proof that your new windows are working brilliantly!

Yes – We are CERTASS registered and approved installers. Every installation also comes with an 10-year insurance-backed  guarantee for customer peace of mind. You’ll get your certificate by email within 2 weeks from installation if for any reason you do not receive your certificate please contact us and we will chase CERTASS for you.

 Yes – We are covered for £5 million public liability. Certificate available on request.

Yes – typical terms: 50 % deposit on acceptance, Then the final 50 % balance due on the day of completion. Unless there are any snags to complete then customers my hold back a % of the final balance agreed between the management and customer.

We specialise in the repairs and installation of all window types, from traditional single-glazed frames to contemporary triple-glazed uPVC systems. For a comprehensive overview of our repairs and additional services we offer, please visit the dedicated section on our website.

We are happy to replace a single window if that meets your current needs. For customers opting for multiple window replacements, we offer attractive volume-based discounts. We will provide a detailed, itemised quotation allowing you to select exactly which window (or windows) you wish to proceed with on request.

 Updating outdated double glazing is good because it:

• Cuts heat loss by up to 40% → much lower energy bills
• Switches from old, inefficient 1990s/2000s units (often 12–16 mm air gap, no low-E coating) to modern ones (warm-edge spacers, argon/krypton fill, low-E coatings) that can hit U-values as low as 1.0–1.2 W/m²K instead of 2.8+

You’ll feel warmer in winter, cooler in summer, and see the savings on your bills straight away.

Also in most cases updating your old windows and doors helps add value to your property.

All our quotations are provided on a strictly no-obligation basis and are entirely hassle-free. We do not employ high-pressure sales tactics.

One of our experienced surveyors will visit at a time convenient to you, discuss your requirements in detail, and explore the most suitable options for your home. Following the survey, your quotation will be emailed to you, allowing you to review it at your leisure.

Please note that, due to fluctuating material costs, all quotations remain valid for 30 days from the date of issue, after which they may be subject to repricing if required.

Usually 1–3 days for a typical semi-detached house. We remove and install one room at a time so you’re never left exposed overnight. All rubbish is taken away daily so you are always left with a clear space and a clean home.

We do not provide a emergency service but we carry most common parts on the vans. Most handle, hinge or lock repairs are done in within a hour. If we can not repair while onsite we will secure the issue and measure for the part to then provide a quotation to repair you only pay for the work done so if we fix on the day then payment will be due if we just measure and secure this will all be part of the survey which we do for Free!

9 times out of 10 yes. We realign (“toe & heel”) we can also replace the door hinges/mechanisms and key barrel if needed – usually costing between £120–£250 depending on what's needed. Please note most hinges and locking mechanisms and key barrels will have to be ordered in as they are profile pacific. We will survey and provide a quotation for this if so for Free!

10 years on frames and doors (against discoloration) 

5 years on sealed units (against failure ie Misting in-between panes) 

1 year on hardware. (against faulty parts or broken parts subject to inspection of mis-use)

Our 10 year insurance backed guarantee is provide by QANW for our customers as a backup for if we was to cease trading while your guarantee is active. Please note: If you are to have any issues please contact us by phone or our contact us page. QANW is only to be contacted if we go out of business.

For a full list on all guarantees please go to terms and conditions under the MORE tab on the home page.

Prices start from £600–£800 per window (Based on uPVC casement sized at 1.2M x 1.2M) and £1600–£2000+ for composite doors. Every house is different so there is no real standard sizes everything is made to measure – we always give free, no-obligation quotes. We also have a live pricing door designer to help you see cost of a composite door. We hope in time we will also have a uPVC window designer and many more as the company grows to help our customers get live real-time prices from the comfort of your sofa.