Replacement Windows, Expertly Fitted Across Scotland
A-rated windows in uPVC and aluminium, in every style – from casement and sash to tilt & turn – all made to measure, expertly fitted and backed by a 15 year insurance-backed guarantee.
Trusted by Scottish homeowners for over 25 years.
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No obligation · No pushy sales · Free survey

FENSA Registered
Every window and door installation meets Building Regulations, with a FENSA certificate issued for your records.
15 year guarantee
Every installation is protected by an insurance-backed guarantee, giving you complete confidence from day one.
25 Years' Expertise
A quarter-century of experience, installing A-rated windows and doors to a higher standard across Scotland.
Every window your home could need, in one place.
Whatever you’re after – the warmth and value of uPVC, the slim, contemporary lines of aluminium, or a traditional sash to suit a period home – we make and fit it to measure across Scotland. Every window comes A-rated as standard, in the style, colour and glazing that’s right for your home. Not sure where to start? Tell us what you need and we’ll guide you at a free, no-obligation survey.
Find the right window for your home.
Blinds in Glass
Integral blinds sealed inside the glazing, privacy with no upkeep.
Trade-grade quality windows, fitted for your home.
25+ years' experience
A quarter-century fitting premium uPVC windows for homeowners across Scotland.
Trade-grade quality
The same premium, A-rated windows the trade relies on, fitted to an exacting standard in your home.
15 year guarantee
An insurance-backed guarantee on every installation, for complete peace of mind.
Covering all of Scotland
Edinburgh, Glasgow, Aberdeen, Dundee, the Highlands and everywhere between.
Rated 5/5
Verified Google reviews from right across Scotland, for tidy installs, honest quotes and a finish that lasts.
No pushy sales
Free survey and a clear, fixed written quote. Honest advice, zero pressure and no hard sell.
From quote to fitted, in four steps.
Free home survey
We measure up and talk through your window options, at a time that suits you.
Fixed written quote
A clear, no-obligation price with no hidden extras and no pressure to commit.
Expert installation
Experienced, fully insured fitters install cleanly and tidily - every job FENSA registered.
15 year guarantee
Backed by an insurance-backed guarantee and friendly local aftercare.
Recent Window installs across Scotland
Rated 5/5 on Google · Verified customer reviews
Posted on Google Fiona STrustindex verifies that the original source of the review is Google. Very happy with service providedPosted on Google Kai GTrustindex verifies that the original source of the review is Google. As a lead generation partner, we've had a very positive experience working with this company. They're professional, responsive, and easy to communicate with, making the whole process smooth from start to finish. It's been a pleasure building a working relationship with them, and we look forward to many more successful projects together.Posted on Google Stephanie MTrustindex verifies that the original source of the review is Google. Communication from my initial online enquiry right the way through to the completion of the job was excellent. I am extremely happy with the quality of the work that has been carried out by Hi-Spec. After shopping around for some time I found their prices to be highly competitive and their service second to none.Posted on Google Stacey HTrustindex verifies that the original source of the review is Google. ***** 5 star review for service and quality of work carried out. I would highly recommend Hi-Spec Windows and Doors.Posted on Google Sean RTrustindex verifies that the original source of the review is Google. First-class service from Hi-Spec Windows & Doors from the initial enquiry right through to the installation. The team was professional, friendly, and the quality of the workmanship was excellent throughout. I would highly recommend Hi-Spec Windows & Doors to anyone looking for quality products and outstanding service.Posted on Google Carly DTrustindex verifies that the original source of the review is Google. 10/10 experience, thank you so much and i will be backPosted on Google Bayley MTrustindex verifies that the original source of the review is Google. Very happy with the new installation of my windows from the service to the job being completed.Posted on Google AdamTrustindex verifies that the original source of the review is Google. I recommend 5-Star Service.Posted on Google Fiona CTrustindex verifies that the original source of the review is Google. The service was very professional and all the work was carried out to a high standard and the workers were very clean and helpfulPosted on Google Pierce MTrustindex verifies that the original source of the review is Google. ⭐⭐⭐⭐⭐ I couldn’t be happier with the service from Hi-Spec Windows & Doors. After getting a few different quotes, they stood out as offering the best value, and from the very first visit everything was straightforward and professional. The salesman arrived on time, took the time to talk me through all the different options, answered all my questions, and we agreed on a package that suited exactly what I was looking for. The surveyor who came out to measure was also punctual, friendly, and professional. I was given an installation date, everything went exactly to plan, and the fitting team did a fantastic job. The new windows look amazing and the quality of the work is excellent. I genuinely can’t fault the whole experience from start to finish. Great communication, reliable, professional service, and a brilliant end result. I would have no hesitation in recommending Hi-Spec Windows & Doors to anyone looking for new windows. 5 stars all the way!
Common questions about our windows
Thinking about new windows? Here are quick answers about materials, styles, glazing and installation across Scotland.
What types of windows do you supply?
We supply and fit A-rated windows in uPVC and aluminium, in casement, tilt & turn and sliding sash styles, all made to measure across Scotland.
uPVC or aluminium: Which should I choose?
uPVC is the warm, cost-effective all-rounder; aluminium offers slimmer frames, more glass and a contemporary look. We’ll help you weigh them up at your free survey.
Are your windows energy efficient?
Yes. Every window is A-rated as standard, with energy-efficient double glazing to help keep your home warmer and your bills lower.
Do your windows come with a guarantee?
Yes. Every installation is covered by a 10-year insurance-backed guarantee.
How long does a window installation take?
Most home installations are completed within a day or two, depending on the number of windows. We’ll give you a clear timescale with your quote.
Will you remove and dispose of my old windows?
Yes. We remove your old frames, fit the new ones and leave your home clean and tidy.
How much do new windows cost
It depends on the number of windows, the material, style and glazing you choose. The best way to get an accurate price is a free, no-obligation survey. We’ll give you a fixed written quote with no hidden extras.
Do you fit windows across Scotland?
Yes. We supply and fit windows across Scotland, including Glasgow, Edinburgh, Aberdeen, Dundee, the Highlands and everywhere between.
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