Author: Mithul Mistry

In the UK, we long for sunshine most of the year. But in true Brit style when summer does finally arrive and temperatures soar, we’re not so happy when our homes can quickly become hot and stuffy.

Unfortunately, most UK houses aren’t built for hot weather, so when the temperature creeps up it’s important to take simple steps to improve airflow and keep your home cool.

If you’re wondering how to increase ventilation in your house, or whether to keep windows open or closed in summer, these tips will help you boost air circulation, reduce indoor heat, and create a more comfortable living environment.

1. Open and close your windows at the right time of day

The most common question in hot weather is: Should I keep my windows open or closed in summer? And the answer? Well, both. But it’s timing that’s key.

It may seem logical to crack your windows opening during the day when the sun is at its hottest. However, opening your windows lets hot air flood in, and actually makes your home even warmer.

Instead, keep your windows closed and curtains drawn to block out the heat. Then, once the outside temperature drops in the evening or early morning, open your windows to let cooler air flow in and refresh your space – perfect for making bedtime more bearable.

2. Use the chimney effect to boost air circulation

The chimney effect is a simple but effective way to improve ventilation in your home, and it’s been used in hot climates for centuries. This technique relies on the natural movement of air: cool air enters at a low point and pushes warm air up and out through higher openings.

How to create a chimney effect at home:

1. Open a window on the coolest, lowest side of your home.
2. Open another window on the hottest, highest side; ideally upstairs or near the ceiling.
3. Place a fan pointing outward in the upper window to help draw warm air out.

This creates a steady, natural flow of fresh air, which is just what you need on warm, still days.

3. Close curtains or blinds on south-facing windows

South-facing rooms get the most sunlight throughout the day. While this is great in winter, in the summer it can quickly turn into an uncomfortable problem.

Large south-facing windows and conservatories end up acting like greenhouses, trapping hot air inside.

To help reduce this effect you can:

• Close your curtains or blinds during the hottest part of the day.
• Invest in some blackout blinds or thermal-lined curtains for extra insulation.
• If you’re making home improvements, consider switching to solar control glass to help reflect additional heat.

4. Check your windows and doors for repairs

If your windows and doors are poorly sealed or stiff, it can unintentionally hinder airflow and make it difficult to properly ventilate your home.

If your windows don’t open fully, won’t stay open safely, or let in draughts during winter, it might be time for repairs. Fixing hinges, seals, or frames not only helps improve summer ventilation but also boosts insulation and energy efficiency year-round.

5. Make the most of trickle vents (if you have them)

Many modern windows include trickle vents; small openings at the top of the frame that allow a low level of fresh air into your home, even when the windows are closed.

These are a godsend in summer when you want a constant background airflow without fully opening windows (ideal for security or if you live on a noisy road). If your windows don’t have trickle vents, you could explore retrofit options or upgrades when the time comes to replace them.

Improving air circulation at home doesn’t need to be complicated. With the right techniques, from opening windows at the right time to using natural airflow methods like the chimney effect, you can reduce stuffiness, improve indoor air quality, and keep your home cooler throughout the summer months.

FAQs

Should I leave my windows open or closed during a heatwave?
Keep them closed during the hottest hours of the day to block warm air, and open them in the evening when it’s cooler outside.

How can I improve airflow in a house with poor ventilation?
Use the chimney effect, keep internal doors open, install extractor fans where needed, and make use of trickle vents.

What are the benefits of opening windows at home?
Opening windows helps reduce indoor humidity, expel stale air and pollutants, and bring in fresh air, especially when timed correctly.

The conservatory. It can be such a bright and peaceful spot to relax all year round. But, just like any part of your home, it needs a bit of love and attention now and again to keep it that way.

Nobody wants to deal with unexpected repair bills and regular care and maintenance goes a long way. Whether you spot mist between the glass panes, feel a sneaky draught, or wrest with a stiff door, it’s important to fix them ASAP.

In this guide, we’ll share some simple ways you can look after your conservatory.

1. Keep your glass panels clean and clear

It’s amazing how quickly dirt and grime can build up, especially on conservatory roofs and windows. To help maintain your double glazed windows, give your glass a gentle wash every few months. Warm, soapy water and a soft cloth are your best friends here. Just be sure to avoid harsh chemicals or abrasive pads that could damage the surface.

Top Tip: Clean on a cloudy day to avoid streaks from fast drying.

2. Look out for misted or blown glass units

Ever notice your conservatory windows looking foggy or misty between the panes, no matter how much you clean them? That’s usually a sign the seal on the double glazing has failed. It doesn’t just spoil your view; it means your conservatory isn’t as insulated as well as it should be.

The good news? In most cases, you don’t need a whole new window frame. Often, just the sealed glass unit itself can be replaced. It’s a simpler, cost-effective and less disruptive option.

3. Check for draughts, sticking windows or loose seals

Over time, conservatory windows can start to show signs of wear. Hinges might get stiff, rubber seals can become loose, and handles or locks might not work as smoothly as they used to. These might seem like small annoyances, but they can lead to draughts, let rain sneak in, or even make your home less secure if you leave them.

So, give your windows a regular check. Do they open and close okay? Are the seals looking healthy? If something isn’t right, it’s worth getting it looked at before it becomes a bigger issue.

4. Don’t forget about your conservatory doors

If you’ve got patio or French doors leading out from your conservatory, make sure they’re part of your check-up routine too! Warped frames, worn seals, or damaged glass on doors can also cause leaks and security worries.

Have a quick look: Are the doors hanging straight? Do the handles and locks work smoothly? Can you see any gaps or worn spots where draughts or damp could get in?

5. Manage moisture and prevent mould

Condensation can be a real pain in conservatories, especially when it’s colder outside. The key is good ventilation. Try to open windows or doors regularly to let the air circulate. If you continually try to prevent condensation, but it’s a persistent problem, a dehumidifier can really help. It’s also a good idea to leave blinds or curtains open when possible to help airflow around the glass.

6. Clean out gutters and check roof panels

Blocked gutters are bad news. If rainwater can’t drain away, it can overflow and potentially cause damp patches or leaks inside your conservatory. Make sure to clear out leaves, moss, and other debris regularly, especially after the autumn shedding season! While you’re at it, have a quick glance up at your roof panels for any obvious damage or cloudiness.

That’s where Cloudy2Clear can often help. They focus on fixing specific problems – like replacing just the failed double-glazed units, sorting out window and door hinges, handles, locks, and more. It’s all about helping you keep your conservatory in great shape without the stress or cost of replacing everything.

Ready to restore your conservatory?

From conservatory window repair to replacing misted panels, locks and handles, Cloudy2Clear makes it easy to restore your conservatory’s comfort and clarity.

Get your free, no-obligation quote today.

Double glazed windows are a sensible investment, adding extra comfort to your home alongside energy efficiency and security.

However, if you’re in the process of choosing which double glazed windows to buy, or deciding if you need a repair or replacement, it can be difficult to know where to start. With so many types of glass and frames to choose from, how do you know which ones are right for you?

We’ve broken down the different types of double glazing and things to consider before buying.

What is double glazing and how does it work?

Double glazing consists of two panes of glass that are separated by a layer of gas or air. The gap acts as insulation and reduces heat loss, noise and condensation inside your home.

Want to learn more about the benefits of double glazing? Check out our guide to double glazing benefits.

Types of double glazing glass

Let’s talk about the different glass options available to you when you buy double glazing. The type of glass you choose can impact many things, from energy efficiency to security and noise control.

Here’s an overview of the most common types of double glazing glass:

What to consider when buying double glazed windows

Buying the right double glazing is a big decision, and the best option for you will depend on your home’s needs, your lifestyle, and how much you’re willing to invest for long-term performance.

Below, we’ve broken down the key factors to help you make an informed decision.

1. Set your budget – but remember double glazing is an investment

The amount you spend on double glazing is influenced by many things:

• The size of your windows
• The style of windows you choose
• The type of glass you have
• The material of your window frames

It’s natural to select your windows so the price is as low as possible, particularly if you have a tight budget.

However, it’s best to think about the bigger picture and not rule out higher-spec options just to keep costs down in the short term. Higher-spec glass or frames are likely to bring longer-term benefits, such as keeping your house warmer in the winter and helping you to save on energy bills.

Of course, balancing long-term benefits and upfront costs is a balancing act. For a better understanding of price points, check out our guide to double glazing costs for average cost and repair options.

2. Prioritise energy efficiency windows and ask about energy ratings

Making your home more energy efficient is one of the biggest reasons people upgrade their windows. If energy efficiency is a top priority, it’s crucial to know what to look for.

In the UK, double glazed windows come with an energy rating label, just like fridges and washing machines do. These labels range from A++ (which is the most efficient rating) through to G. The higher the rating, the better your windows are at keeping the heat in and the cold out.

You should also know that if you’re getting new or replacement windows, UK Building Regulations stipulate that they must be at least a B rating or better, so check the rating before you buy.

Learn more about how energy efficient windows work and the benefits they have in your home.

3. Think about the security features of your windows

Your windows don’t just let in light, they also play a big part in keeping your home secure. Consider if the windows you’re buying come with built-in security features for that added peace of mind.

Most modern windows have multi-point locking systems. This secures the window at several points with one easy turn of the handle, making them much harder to force open than older single-lock designs.

Look to see if windows meet the recognised security standards. PAS 24 is the standard of testing that shows windows and doors have been tested for optimal break-in resistance.

4. Buy a window style that suits your home and surrounding area

Windows can influence curb appeal, so buying the right style of windows for your home is probably more important than you think, particularly if you’re considering selling your home in the future.

From modern casement windows to traditional sash designs, the right style will depend on your home’s character, the era it was built and your preferences.

Casement windows

Casement windows are a classic and practical choice that will suit most homes. Hinged at the side, they open outwards with a hinge mechanism. Simple and versatile, they are a popular choice for homeowners with both modern and traditional properties.

Sash windows

Sash windows are more of a traditional option for period or heritage properties. They slide up and down vertically and can be designed with a tilt-and-turn mechanism for better practicality. They are ideal for homeowners looking to preserve traditional aesthetics and benefit from the insulation and security of double glazing.

Tilt & turn windows

​​Tilt-and-turn windows are a popular choice for modern homes, flats, and properties where external window access is limited. They offer easy cleaning, flexible ventilation and enhanced security. Their inward-opening design also makes them a safe option for families with young children.

5. Buy the right window frame material

Alongside the type of double glazed windows you choose, you should also carefully consider the different frame materials available. Window frame material, much like window type, can influence aesthetics and curb appeal. In addition, window frames also impact performance (think energy efficiency, maintenance and longevity).

UPVC window frames

• Affordable, energy-efficient, and low maintenance; a popular all-rounder.

Aluminium window frames

• Sleek and strong, ideal for modern homes or large glass panes.

Timber window frames

• Natural and traditional in style, but needs more regular upkeep. Popular choice for heritage properties.

Want to see how window style and frame material choices impact the overall cost of your double glazing? Read our double glazing price guide.

Replacing vs repairing: Know your options

If your current double glazing is misted, draughty or damaged, you may not need to replace the entire window. In many cases, you can simply replace the sealed glass unit, saving money, time and disruption.

Need advice or a quote?

Cloudy2Clear specialises in glass-only double glazing repairs, helping you restore comfort, clarity and insulation without replacing your frames. Whether it’s misted panes, faulty locks or draughty windows, we offer simple, cost-effective repairs that help you get more from your windows.

Get your free, no-obligation quote today.

Double glazing isn’t cheap and replacing it all can be an expensive project. That’s why we pride ourselves on only replacing the parts that are broken rather than the entire window pane and frame to save you time and money. So, how do you know if your double glazing needs repairing and what causes the damage? We’ll cover all of this, and more, in the following article.

4 reasons why window seals fail

Window seals have an average lifespan of 10 – 20 years but seals can fail much sooner. Here are 4 common reasons why window seals become ineffective.

Shrinkage from cold weather – ’solar pumping’

Window seals wear down over time through ‘solar pumping’. This is where the sun shining on your windows causes the glass to expand, putting pressure on the seals. As this happens over the years, the glass cools and shrinks each night, causing wear from the repeated pressure and eventually, the seal can fail. The effects of solar pumping are more prevalent in south and west-facing windows, as they receive more sunlight and are more likely to expand.

Wear and tear from time and moisture

Naturally, things wear down over time, and window seals are exposed to some harsh external conditions. Seals must cope with varying weather conditions, high winds, rain, heat, and cold, so they will eventually wear down. Furthermore, if a small amount of damage occurs and moisture finds its way into your home, mold and damp can increase this degradation.

Poorly fitted windowpanes

Whether it’s bad handiwork or windows dropping over time, a poorly fitted windowpane doesn’t sit right and can cause added unnecessary pressure to your sealing.

Accidents and unexpected damage

Accidents happen, and they can happen to your windows. From harsh chemicals used in painting or redecorating wearing seals down to burglaries and break-ins or even things hitting your windows, this can damage your windows and seals.

What happens if you don’t repair double glazing?

It’s completely your choice whether you repair your double glazing or not. However, it’s important to understand that broken or damaged double glazing can have bigger health and financial implications in the future.

It can cause mould and damp

Moisture that enters the home through damaged double glazing can cause mould and dampness. Inside your home tends to be warmer than outside, particularly during the colder months, so condensation forms on cooler surfaces, causing damp. This doesn’t happen with functional double-glazing as the gas-filled gap between the two panes of glass acts as a barrier.

As well as causing condensation on and around your windows, mould and dampness can also result in:

• Crumbling plaster and peeling wallpaper on your walls and ceiling
• Damaged fabrics and furniture resulting in costly replacements or repairs
• Poor respiratory health from the allergens, irritants and toxic substances produced by mould

Mould can be especially harmful to those with asthma as it can cause allergic reactions and harsh respiratory illnesses. However, removing mould and damp as soon as you find it can reduce the chances of contracting these life-threatening symptoms.

You’ll have higher energy bills

We lose around 20% of our heat through windows and doors. Failing to keep heat in by following basic maintenance routines and repairing double glazing as soon as you notice an issue can increase your energy bills. With energy prices always on the rise, every penny helps to keep gas and electricity bills down. Quality double glazing is impressively energy-efficient and environmentally beneficial.

The frames could rot

Rotting window frames are a common cause of failed double glazing in older homes. Much like mould, rot forms from exposure to water and moisture. Wood is an absorbent material that can soak up and retain water. The longer wood is exposed to moisture, the bigger the risk of damage as rot is a fungus which loves damp conditions.

Increased moisture can come from condensation or long-term exposure to severe weather conditions. Discoloured paint or crumbling and softened wood are the earliest signs that your window frames have begun to rot. It’s important to tackle these problems quickly to avoid further damage to your home.

FAQs about double glazing repairs

Do double glazing repairs have to be expensive?

While the notion of repairing your double glazed windows might sound costly, it’s usually far more economical than buying new windows altogether. At Cloudy2Clear, we offer cost-effective solutions that focus on replacing only the glass panes with imperfections. This approach can save you over 50% compared to full window replacements from other providers.

How do I know my double glazing needs repairs?

The first signs that your double glazing needs attention are usually quite evident. Recognising the early signs that your double glazing needs repair can save you time and money in the long run. Here are some key indicators to watch out for:

• Draughts coming through the frames
• Condensation between panes indicates that the seals have failed
• Difficulty opening, closing and locking windows
• Foggy or cloudy glass suggests failed insulation properties
• Physical damage like cracks or chips
• Increased Energy Bills indicate windows might be letting out heat
• Whistling or rattling noises from gaps around your pane or frame

Can double glazed windows be resealed?

If you notice broken seals leading to drafts and damp, it is likely the window needs to be repaired or replaced. You should seek professional help to get your windows measured and replaced if there appears to be moisture between the panes due to broken seals.

How long do double glazing repairs take?

The time taken to repair your double glazing can vary depending on the issue at hand. If you’re looking to replace a window, typically it can take as little as 30 minutes. However, more complex problems may require more time for a thorough evaluation and remedy.

Do I need a professional double glazing fitter?

Your double glazing is a key feature of your property, and it’s important to remember that things can go wrong if you don’t source a highly experienced provider. Here are a few of the issues that can arise with DIY double glazing repairs:

• Leaking and water damage from incorrectly installed seals
• Reduced energy efficiency from poor fittings
• Security risks from badly installed or repaired windows
• Invalid warranty, fines, legal action and failing to meet building regulations with DIY installations
• Uneven gaps, misaligned frames, or visibly poor quality
• Draughts and noise from badly installed locks and hinges
• Broken glass and mechanical failures can create pressure points that cause the glass to crack
• Costly repairs and replacements from poorly installed locks, handles, hinges, windows and frames

How much does double glazing repair cost?

The average cost of a full double-glazed window from other providers ranges between £350 and £400. However, we pride ourselves on offering a more budget-friendly alternative.

For instance, replacing a full bay window typically costs around £1300 for three frames and six windows. In comparison, Cloudy2Clear can perform the same task for approximately £599, including VAT, because we only carry out the necessary repairs.

We also offer repair services for locks, handles, and hinges, giving you a well-rounded, cost-effective solution for maintaining your double glazed windows.

Call Cloudy2Clear for a free quote

To have your double glazing fixed, get in touch with our experienced team at Cloudy2Clear.

• We only repair the areas of your double glazing that need it
• Our prices are much lower than competitors who replace entire frames unnecessarily
• Save costs while maintaining the health of your home and your family

Call us now on 0800 182 2045 – or fill out our contact form to find out about our double glazing repair services. Operating across the UK, our friendly engineers will provide a free quote before coming out to check the condition of your double glazing.

If you think your double glazing needs replacing, you’re probably wondering whether you can replace only the glass, rather than the entire frame. The short answer is yes, you can replace the glass, but there are a number of things to consider before you reach the point of replacing windows.

Are you experiencing any faults with your windows? Can you replace the windows yourself? How often should you replace your windows? We’ll look at all this, and more, in the following article.

What Are the Most Common Faults with Double Glazing?

Even if you’ve followed all the window maintenance advice, you can still encounter issues with your new windows. A study by Which asked homeowners what common double gazing faults they experienced….

• 34% said their windows became difficult to open or close
• 15% experienced issues with window locks not working
• 18% noticed windows or doors dropped over time and didn’t fit as well
• 12% said the seals around doors and windows failed
• 9% reported the glass was steaming up and they had issues with condensation
• 5% noted that their double glazing had cracked or shattered

We’ll dive into why some of these issues occur below.

Windows or doors becoming difficult to open or close

If your double glazed windows or doors become difficult to open and close, they may need repairing. Your doors and windows can become difficult to open for a number of reasons, including:

• Faulty locks and handles or hinges shifting over time
• Hot and cold weather causing frames to expand and shrink

Windows or doors dropping over time, so they don’t fit as well

One of the key reasons windows or doors become hard to open or close is that they have dropped over time. A double glazed window or door that doesn’t fit the frame correctly loses its energy efficiency. Other signs your double glazing needs fixing due to sagging include:

• Loose hinges that don’t improve when you tighten the screws
• Doors and windows that get ‘stuck’ when you open and close them
• No improvement when you’ve oiled hinges and handles
• Feeling a draught entering the home where the window or door doesn’t fit correctly

Locks not working

The locks on your windows and doors can also fail and compromise the security of your home. To keep your family and possessions safe, repair broken locks as soon as you notice them.

Glass steaming up or problems with condensation

Steamed glass is a bad sign for double glazed windows as the constant presence of water can weaken the seal and result in mould. If you notice condensation or cloudiness between the two panes, your windows probably need replacing. The good news is that there are preventative measures you can take to help avoid condensation in the first place:

• Ventilate rooms with fresh air by opening windows
• Open windows when showering or bathing to let steam escape
• Use extractor fans where possible
• Install ventilation systems – trickle vents and air bricks can help
• Use a dehumidifier to reduce the humidity levels within your home

Seals around doors or windows failing

The seals in your double glazed windows or doors can fail for a number of reasons. It’s important that you get these faults fixed to maintain the energy efficiency of your windows.

• Natural wear and tear over time: As our windows age, so does the quality of the seals around them.
• Weather damage: In summer months, fluctuating temperatures can cause the glass to expand and shrink which places additional pressure on the seal. This process can damage the seal due to extra stress.
• Faulty manufacturing: Damaged window seals can occur from faulty manufacturing or poor quality materials so choose a double glazing specialist with excellent reviews. If broken seals occur due to product faults, your manufacturer may have a window warranty in place.
• Improper maintenance: The more care we treat our windows with, the longer they will last. Pressure washers or strong cleaning products can wear the plastic down and damage the seal.

Double glazing cracking or shattering

Windows can break or crack, depending on the weather conditions and the way you treat them. Prevent damage to your windows by:

• Opt for tempered glass when you have your double glazing fitted.
• Choose pale-coloured window coverings avoiding extreme temperature differences.
• Reduce humidity in your home by using a dehumidifier.
• Be careful around your double glazed windows and check for any scratches in the glass regularly. Any damage to the glass creates weak points, which can cause more damage to your windows later on.

Can I Replace My Double Glazing Myself?

You can tackle many home improvement tasks yourself, but even skilled DIYers should avoid attempting to replace double glazing as it’s difficult to get it right. While it can be tempting to ‘cut down’ on costs, we’d always recommend finding highly rated professionals to replace your double glazing to avoid further costs in the long run.

86.7% of UK homes had double glazing installed by 2020 as it’s a great energy saving option. While successful double glazing can save you money on your bills, an unsuccessful attempt to repair or replace double glazing yourself can actually end up costing you money.

Here are just a few of the reasons you should seek a professional to replace your double glazing.

You won’t save time and the specialist equipment you’ll need is expensive.

Repairing and replacing double glazed windows yourself requires a great deal of effort. The reinstallation of double glazed windows involves specialist skills and insights, particularly when you consider that the replacement of each variety of window will require a different approach.

It would take a long time figuring out how to do it correctly and you’d need specialist tools such as glazing knives, glass lifters, power tools, soft-faced glazing hammers and glazing PPE so you’ll likely be even more out of pocket than you would if you decided to go with a professional. If you cause damage or shoddy work needs to be redone, you’ll have to bear the cost of that as well.

You’ll void the manufacturer’s warranty

Window manufacturers offer a warranty with their products, sometimes providing lifetime warranty policies that can last for decades. The majority of window warranties cover all elements of the window, including hardware (handles, locks), the glass, frame, and finish of your window.

When considering whether you should repair or replace your windows yourself, it’s important to remember that the manufacturer’s warranty will be invalidated if the installation isn’t done by a professional. This is because most DIY replacements by non-professionals are not done to a suitable standard. Even if you think your work seems satisfactory to begin with, mistakes can quickly reveal themselves and render your efforts pointless.

You may lose out on the energy savings.

When it’s done properly, double glazed windows are highly energy efficient as they reduce the amount of heat that is able to escape through your windows. This means you could save hundreds on energy bills every year.

Energy savings are often the biggest appeal when it comes to having double glazing installed. If your DIY double glazing replacement project goes wrong, however, you’ll lose the insulating benefit of double glazing.

FAQs about replacing double glazed windows

Replace the pane, not the frame

If your window frames are in good condition, Cloudy2Clear can repair your window at the fraction of the cost of a full replacement. Whether you have cloudy, misted up glass, or are looking to update your windows, save money by replacing only the parts of your window that are faulty with Cloudy2Clear.

Contact one of our specialists for advice now.