Buy Now - PAY in 2025!

Monthly Experience Prize Draw! - How to play

Diy window installation vs hiring professionals Three Counties Primary Logo

DIY Window Installation Vs Hiring Professionals

(5 min read)

If you’re looking to replace your windows, you may be wondering whether fitting them yourself is a viable option. What are the pros and cons of DIY replacement window installation? And what’s the best solution for you?

Quick FAQs

Can I replace my windows myself?

It is possible to fit replacement windows yourself if you have the right tools and have done thorough research on how to do the job properly.

How much cheaper is it to fit replacement windows myself?

The DIY route means save on the cost of labour. The difference in cost will be substantial (it could be as much as 50%). However, if anything goes wrong, you‘ll have no protection and will need to pay a professional to help. This could turn out to be much more costly in the long run.

There are pros and cons to both options: fitting your replacement windows yourself and hiring an expert to do the job. Read on to learn more about some important aspects to consider before making your decision.

Advantages of DIY Window Installation

  • Saving money – Fitting your replacement windows yourself will inevitably reduce the cost of the project, assuming everything goes to plan. You’ll be able to purchase the full-frame replacement windows at retail value.
  • Your decision on style – Of course, you still get to select the window(s) of your choice, if you hire a professional fitter, but they may sway your decision or make unwanted suggestions. The DIY approach provides you with complete autonomy.
  • You learn a new skill – If there’s a chance that you might be fitting replacement windows again in the future, it may be valuable to acquire the skills (and the tools) needed. Your research and efforts spent on this project can be seen as a form of training.

Disadvantages of DIY Window Installation

  • Lack of the right tools – You may think the DIY window fitting option means you only have the cost of the windows themselves. But, if you don’t already have the necessary tools for the job, you’ll need to spend money hiring or purchasing these tools.
  • A longer job – When we are inexperienced in a particular task, it inevitably takes us longer to complete. It’s important to consider the money saved by carrying out the installation yourself against your labour time and what that’s worth.
  • Risk of a poorer fitting standard – If you have never fitted replacement windows before you risk a sub-standard fitting. Even a capable DIY practitioner may make mistakes as they lack the full understanding or experience of this specialist job.

Is the DIY Window Fitting the Right Route for You?

Whilst cheaper, fitting your own windows is risky. Only those experienced in property DIY, with some level of skill will be able to really do a good job of replacement window installation. You will need to set aside the time to research the techniques, source the materials and tools, then put in the labour yourself – which may take considerably longer than it would take a professional company.

Advantages of Hiring a Professional for Window Installation

  • Quality of the work – An expert window fitter will have the skills and experience needed to do a good job, meaning your windows are securely fitted. This will mean your new windows are more energy-efficient and will last longer.
  • Guarantee of the work – Hiring a professional to fit your replacement windows is likely to mean you have the peace of mind of a warranty or guarantee that a company offers. You can call the company after the fitting with concerns or queries.
  • Less risk of accidental damage – A professional fitter is less likely to damage floors or surfaces in your property than someone with little or no experience. It is also worth remembering that if a professional fitter damages the new units during the fitting, they will replace these at no extra cost.
  • A quicker fitting – A hired window fitter will typically be able to fit your replacement window(s) faster than you could yourself. They have the knowledge, skills and tools for the job.
  • Bespoke window sizes – If your property doesn’t have standard-sized windows, a professional company will be able to supply you with and fit replacement windows tailored to your property’s requirements.

Disadvantages of Hiring a Professional for Window Installation

  • Higher cost – The cost of hiring a professional fitter will be substantially greater than fitting your windows yourself because you will need to cover the labour costs. Check out our online pricing tool for costs, using our installation services.
  • The timing of the fitting – If you hire an expert to fit your new windows, you will need to fit into their schedule, around other jobs they currently have. This may mean waiting longer than you would like to.
  • Choosing the wrong installation company – If you don’t choose a trustworthy, experienced fitter, with good reviews, you risk your windows being poorly fitted.

Is the Professional Window Installation the Right Route for You?

If you choose a reputable company to fit your replacement windows, you will get the best results; well-fitted windows, installed quickly and efficiently, with minimal disruption. You will have the guarantee that all work is covered under warranty, should you have any problems. The initial outlay may be greater than the DIY route but you won’t need to supply tools or pay for any mistakes or damage.

What’s the Verdict?

The decision of whether to hire professionals to fit your replacement windows or whether to take the DIY route lies entirely with the individual and their personal circumstances.

Fitting your own replacement windows could be a great option if you:

  • have the time to embark on this project (the research and the fitting itself)
  • have some prior experience with property DIY
  • already have some of the tools needed or if you are able to easily and cheaply source them
  • want to add this specific skill set to your repertoire
  • have a very limited budget

If the above doesn’t sound like you, then hiring a professional replacement window fitter is probably the better option. If you choose a reputable company, you will have your windows fitted well, with minimal disruption and you will be able to have any concerns addressed post-fitting. If you choose the right company, your installation will also come with a warranty.

Need advice on hiring a glazing company?

Simply contact us and a member of the team can go through the process and explain the advantages versus doing it yourself.

Talk to an Expert

Join Our Newsletter

Sign up to our newsletters and receive useful hints and tips, plus much more, including competitions and special offers.

David Bryant
David Bryant
Very happy with our new door . The support team kept us up to date on everything and the guys on the installation team were early , friendly and professional. Great value all round
Kate Hulbert
Kate Hulbert
Was looking for a new front door, to replace our tragically 80's monstrosity. The Three Counties website was great as i could see and design the door i wanted and then get a quote for it. The sales team was really quick to respond, and not at all pushy. A survey was easily arranged, to confirm sizes etc and the installer turned up precisely on time, was super friendly, efficient, neat and very tidy. Whole process took about 4 weeks, beginning to end, and I now have the door of my dreams! The only downside is my neighbors keep pestering me for details of who did the job. No hesitation in recommending Three Counties.
Nikki Wade
Nikki Wade
I'm very happy with my new conservatory - Mark and David did a brilliant job of the build and resolved any issues I had to make sure everything was finished to a really high standard.
Dominic Blood
Dominic Blood
This is the second time I have used Three Counties , a few years later and in a different house this time. It’s great to see the quality of the windows and workmanship have remained 5*. A stress free installation from start to finish, all windows installed have transformed how our 70s style house looks and now no worries of mould as a result of the old timber framed windows. The Installers who completed our job were amazing, and I mean amazing! Hard working, extremely skilful at their trade, polite and very tidy. Each day when they left they hovered up and left the place in the best condition they could. The whole process from the initial quote , measurements and dealing with the office team before and after the installation has been a true pleasure , if only all businesses were as efficient as this. Highly recommended for anyone considering new windows or any other products they provide and I won’t hesitate to use them again. Thank you Three counties!
Kim Stevens
Kim Stevens
I shopped around and three counties came in at the most reasonably priced, and I used the buy now pay later option. Really happy with my new door and window, which were both fitted in one afternoon. The customer service was very good throughout and everything went smoothly.
I had some windows fitted a few years ago and have recently had a problem with one of the locking mechanism failing. I called 3 Counties, who had a base call out charge, where a lovely lady took my details, refered to my file and we agreed a date when the fitter would come out and inspect the issue. Paul arrived bang on time and was very helpful. He checked the window, confirmsd the issue and promptly fixed it there and then with a replacement part he had on board his van. He was polite and knowledgable. Very efficient. Thank you 3 Counties.
samie dowling
samie dowling
I had new windows fitted and they look amazing, make such a difference. House is much warmer and soundproof! Staff were very professional, done the job so quickly and cleaned up after. Would definitely recommend.
Ywain Martin
Ywain Martin
Excellent service throughout the process. Very happy
Victoria Stone
Victoria Stone
Very happy with our new windows. Fitters were respectful and tidy. From start to finish. Thanks again.