Victorian Home Improvement - Window and Door Installation in Sussex

Case Study - Victorian Home in East Sussex replacement windows and doors

Insulation Services were contacted for solutions to improve the warmth of this Sussex Victorian home through improved energy efficiency of the windows and doors. Originally built with wooden, single glazing - we replaced most windows and doors with double glazed PVCu and added secondary double glazing to preserve the originality of one large window. We were also asked to advise on how to bring more natural light into the upstairs hallway. 


The project began with an initial home visit to view the building, discuss options with the homeowner and record measurements. To preserve the original character of this Victorian home, we recommended installing windows and doors from The Residence Collection which are PVCu timber alternative products created in a heritage British style. The vertical sliding sash windows were sourced from Spectus window systems which have the authentic appearance of timber sash windows but with the modern benefits of PVCu. To solve the need for more light into a dark hallway, we recommended installation of a PVCu lantern roof window.


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Before vs After

Replacement of wooden to PVCu vertical sliding sash windows.

Before vs After

Replacement of wood casement windows to PVCu 'heritage' style timber alternative windows from The Residence Collection

Installation of a lantern roof window with solar control glass for more natural light to enter the upstairs hallway.

"We have a Victorian house with all sorts of oddities, Steve and the team visited with a can do attitude and fitted uPVC 'heritage style' sash windows throughout as well as French doors and a side door. Each issue seemed to be taken as a challenge they wanted to solve. They couldn't have been more helpful and nice to have in the house. Can't recommend them high enough - book them in, you wont be disappointed."


Find out more about the windows and doors we offer.

10 February 2026
Replacing windows and doors or adding a conservatory to your home can make a huge difference to the appearance, security and energy performance of your home. This blog features before and after pictures of some of our installations of windows, doors and conservatories in Sussex.
3 February 2026
Questions to ask before investing in home improvements Why asking the right questions matters… Home improvements such as replacement windows , doors or a new conservatory are a big investment so it’s important you feel confident and informed in your decisions. Many homeowners aren’t always sure of what to ask, or worry about being pressured into making a decision, which is why we created this blog - so you have a clear list of questions and the answers you need to make the right decision for your home. At Insulation Services, we encourage questions, we want you to make the best informed decision for your home so you are happy with the finished installation. Our approach to honesty and transparency within the home improvements industry… At Insulation Services, we commit to giving our customers the best quality services and products. That starts with good communication, from initial enquiry through to finished installation, we make sure you’re informed every step of the way - that includes information about product guarantees and costs. We don’t believe in promoting huge discounts and confusing you about the pricing of products - every job is priced individually based on the product and labour costs. We don’t inflate prices just to bring them down later as a ‘discount’, we price fairly and honestly from day one so you’re never overcharged. We believe that honesty and transparency lead to better results from finished installations and happier customers. Questions to ask us… Products: What material windows and doors are available? What is the difference between the materials? How energy efficient are your products? What ratings do they have? What styles, colours and finishes are available? Are the products made to measure? What furniture/accessories can I have on the windows/doors? What are the different types of handles and how does this affect security? How secure are your products? How long do they last? Are the products from reputable suppliers? What are the limitations of certain window or door styles? Installation: Who will be carrying out the installation - your team or subcontractors? How long will the installation take? Will there be much disruption to my home? Do you tidy up after the installation? Do you dispose of the old windows/doors? How do you protect my property during the installation? Regulations/compliance: Do I need planning permission or building regulations approval? Will I receive FENSA certification after the installation? Pricing: Is the quote fully itemised? What is included in the price? Are there any potential additional costs? Do you require a deposit, and when is the balance due? Are there cheaper options—and why might they cost less? Guarantees: What guarantees do you offer on products and installation? What happens if something goes wrong after fitting? Do you offer ongoing maintenance or support? How do these questions help us deliver a better result? Clear questions help us understand exactly what you are looking for including budget and aesthetics, whilst also making sure you are equipped to make informed decisions as to what is best for your home. If you’re considering investing in new windows, doors or a conservatory, we’re always happy to answer your questions. Visit our showroom in Jarvis Brook, Crowborough, call us on 01892 661858 or use the button below to complete a contact form.
28 January 2026
Common Mistakes Homeowners Make and How to Avoid Them 1. Choosing Price Over Longevity When investing in home improvements such as new windows, doors or a conservatory, it’s sensible to obtain quotations from a few local businesses. However, it’s just as important to understand why those quotes may differ in price. A common mistake homeowners make is choosing the cheapest option - often to save money in the short term or because comparing quotations can feel complicated. While a lower price may seem appealing initially, there is usually a reason it’s cheaper. This might mean lower-quality products, rushed or substandard installation, limited or unclear guarantees, or a lack of care once the work is complete. These issues may not be obvious at first, but they can lead to inconvenience, repairs, or additional costs further down the line. To avoid this, ask each company to clearly explain what is included in their quotation - and what isn’t. Take time to read reviews, look at how long the business has been established, understand the expected lifespan of the products being offered, and what ongoing maintenance may be required. 2. Not Planning for the Future If you’re considering investing in your home, it’s worth asking yourself whether you’re planning for the future or focusing only on what works right now. While it’s natural to look for solutions that meet your immediate needs, it’s just as important to consider how you will find them in the future. What happens when the children move out, or if working from home becomes permanent? A solution that feels convenient today could become limiting or impractical in years to come. Before making any significant changes, take a moment to think five or even ten years ahead. Is the decision going to continue to serve you well, or will it be less suited to you in the future. 3. Choosing a Company Who Communicate Poorly Choosing value over price also means choosing a business that communicates clearly with you. Good communication is essential when someone is working on your home. There’s nothing worse than small misunderstandings becoming big problems when you believe something is included, only to find it isn’t, or has been done differently to what you expected. Be wary of businesses giving vague answers, rushing decisions and not wanting to explain things. Any business that avoids detail or pressures you to move forward before you fully understand what’s involved is not a good choice. A reputable company will take the time to explain your options and make sure everything is clear from the outset. To avoid issues later on, ask plenty of questions and ensure you’re comfortable with the answers before proceeding. Most importantly, make sure all agreed details are clearly set out in writing on your quotation or order form before you commit. Mistakes are easily made but they are avoidable if you know what to look for. Base your decisions on good, clear information that comes from trusted businesses and you should be in safe hands. If you’re thinking of investing in new windows , doors , a conservatory or roofline repairs and want honest advice, we are here to help. 
15 January 2026
What are the different types of door handle and what is the difference? Lever Lock, Offset Lever, Slam Shut and Thumb Turns explained...
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17 December 2025
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10 December 2025
Ventilation plays a huge role in keeping a home healthy and comfortable, but it’s something many people only think about when problems like condensation or stuffy rooms appear. One small, often overlooked feature that can make a big difference is the trickle vent. So, what exactly are trickle vents? Trickle vents are small openings built into the frames of windows that allow a controlled amount of fresh air to circulate indoors, even when the window is closed. They’re usually found at the top of modern windows and can be opened or closed manually with a simple slider. Why do homes need trickle vents? Moisture, indoor pollutants, and stale air build up in every home through everyday activities such as cooking, showering, drying clothes, or simply breathing. If this moisture has nowhere to escape, it can lead to condensation, damp patches and peeling paint, black mould, poor air quality and musty smells. Trickle vents provide continuous background ventilation, helping prevent these issues by allowing moisture-laden air to escape and fresh air to enter. Are trickle vents a requirement? In the UK, building regulations now (since 2022) require the use of trickle vents in most replacement and new-build windows to maintain healthy airflow. They help ensure a minimum level of ventilation without relying on windows being open all day long. Do trickle vents make your home colder? This is a common concern, but they don’t have a significant impact on the temperature of your home. Trickle vents allow only a small, controlled flow of air. They don’t create large drafts, and they shouldn’t noticeably reduce the warmth of your home. In fact, by reducing dampness and improving air quality, they often make a home feel more comfortable. Should you keep trickle vents open? For the best results, yes, especially in winter when condensation is most likely. You can close them if needed (for example, during high winds), but keeping them open ensures a steady flow of fresh air and keeps humidity under control. Trickle vents may be small, but they play a big role in maintaining a healthy indoor environment. They’re a simple, cost-effective way to reduce condensation, prevent mould, and improve overall air quality — all without opening your windows or compromising security.
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10 December 2025
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10 September 2025
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31 July 2025
5 Reasons you should invest in a conservatory for your home More Space and Comfort Create an extra living space in your home to enjoy. A conservatory can work for many purposes whether it becomes an entertainment space, relaxation pod, home office or something else, you can enjoy the comfort of a larger home. 2. More Natural Light With large windows and glass roofs, conservatories provide beautiful views of your garden and bring the outdoors in. They offer a tranquil space filled with natural light, perfect for relaxation year-round. 3. Increase Kerb Appeal A well constructed and aesthetically appealing conservatory can add value to your home when it comes to selling. It is an enticing space that can encourage buyers to consider purchasing a property. 4. Fully customisable and cost effective extension Conservatories are often more affordable and faster to build than major structural extensions, and often don’t require planning permission. Plus, you can fully customise the style and design of your conservatory to suit your needs and the aesthetics of your home. 5. Thermal efficiency Constructed with double or triple glazed and thermally efficient windows and doors, conservatories provide an energy saving space to enjoy all year round.