- Source reference
- CBDU118531
- Licence class
- upper-tier
- Valid through
- Jul 2028
- Source checked
- 30 Jun 2026
Public evidence profile · Checked May 2026
Diamond Windows
Credentials & registries
2 credentials shown
No Trust Score yet
- Rated 4.9 from 374 reviews across 2 review sources
- 2 credentials shown
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Trust at a glance
1 checkWhat we can verify about Diamond Windows
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
See the full verification checklist for Diamond Windows →Credentials and associations
2Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source checked
- 26 Jun 2026
From customer reviews
What customers consistently say
Recurring themes from 150 customer reviews across 2 review sources.
Respectful and tidy in your home: “The work carried out was excellent and the workmen kept the house very clean clearing up after themselves all the time and leaving no mess.” · Checkatrade, 5 Nov 2025
“Thank you for your excellent service.” · Checkatrade, 27 Mar 2026
“Perfect job, great workmanship.” · TrustATrader, 30 Jan 2026
“The quality of the final workmanship has transformed the kerb appeal of the house.” · Checkatrade, 13 Jan 2026
“The team arrived promptly every day and were very reliable” · Checkatrade, 20 Jan 2026
“Diamond windows were very professional in work carried out on time” · Checkatrade, 6 Dec 2025
“Liam and his mate arrived promptly” · Checkatrade, 11 Nov 2025
“Chris was very good at keeping us informed, very organised and professional.” · Checkatrade, 11 Nov 2025
“Diamond Windows were excellent in giving me a fast quotation. Made sure that I new exactly what I was ordering.” · Checkatrade, 13 Nov 2025
“From start to finish great communication from Laura and staff there.” · Checkatrade, 16 May 2025
Reviews · public evidence
What customers say
These reviews are published independently on the named public sources below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
4.9out of 5
Often reviewed for
Customers often mention
Where these reviews are published
- Checkatrade344 reviews · 4.9 avg
- TrustATrader30 reviews · 5.0 avg
Highlights
“From my initial pop in to ask for a rough idea of how much it could cost, through to the actual quote and eventually fitting, the staff and fitters have been brilliant. They said it would take 4 days and it did, Chris, Richard and Mitchell made the whole experience so easy. The windows and doors are such an improvement to our previous over 25 year old double glazing. Thank you for your excellent service.”
“Really great experience, we wanted support and suggestions with designs for 10 replacement windows. Work completed efficiently and on-schedule. Really pleased with reuslts. Would definitely recommend.”
“Recently had a completely new kitchen fitted; exceptional standard of work and quality of fittings; fitter, plasterers, electrician, plumber, painters, all dovetailed and there were no delays to the schedule. Our designer was excellent and the standard of service we received from beginning to end was outstanding. We are delighted and would highly recommend this company to anyone looking for a high quality but affordable new kitchen.”
Detailed reviews
These are the individual reviews we hold for Diamond Windows, including the highlights above. The 374 headline total is the review volume reported across public review sources.
Perfect job, great workmanship. Would not have a problem recommending them.
Verified by Checkatrade
Excellent service from the first phone call to book a quote, right the way through to the end result! The team arrived promptly every day and were very reliable Each team member was always polite and cheery whilst staying professional. They really went above and beyond for us. Great attention to detail resulting in us being very pleased with how our home is looking after having new windows, fascia’s and guttering. We highly recommend Diamond Windows and will definitely be using them again for our future projects! ⭐️⭐️⭐️⭐️⭐️
Verified by Checkatrade
Diamond Windows completed a new roof for our conservatory. Their work and attitude has been exemplary throughout the process. This was our second major project with them and we are more than satisfied. All the craftsmen who worked on the job were skilful and courteous, making the experience a positive one. We would not hesitate to recommend the company.
A HASSLE FREE WAY TO CHANGE YOUR FRONT DOOR
It’s not very often these days that I find it possible to say that Diamond Windows have excelled in every way in carrying out the change in my front door. From initial advising about and demonstrating options, then ordering and delivering on time, to final fitting, Chris, Richard and Lewis were so easy to deal with and so patient about answering my questions I shall have no hesitation in giving Diamond Windows future business. The quality of the final workmanship has transformed the kerb appeal of the house. Thanks Diamond Windows for making the job such a pleasant, trouble free experience.
Verified by CheckatradeFront door
Diamond windows were very professional in work carried out on time and very pleasant will use there service again
Read the other 10 detailed reviews on this pageShow fewer reviews
Very happy with Diamond Droitwich. Chris was great in presenting options, and and Scott and Liam did an excellent job, even more impressive given it was a mid November raining heavily and very windy.
Verified by Checkatrade
Our front door was replaced in a very professional manner and the workmanship was first rate. Our dealings throughout were excellent and we were dealt with courtesy and patience,
Verified by Checkatrade
My wife and I are extremely pleased with our new windows. They are very good quality. The lads did a first class job and were very tidy. We are very impressed and would highly recommend Diamond windows. Thank you very much.
Verified by Checkatrade
I found that Diamond Windows were excellent in giving me a fast quotation. Made sure that I new exactly what I was ordering. Met all installation times and dates. were courteous at all times. offered additional helpful information regarding possible additions to my initial requirements. At no time was any pressure applied to place order. After installation all waste material was removed and a follow up call two weeks after completion made contact to make sure that I was satisfied with their service. I would not hesitate to recommend this company to any one looking this work.*****.
Verified by CheckatradeQuality windows and excellent fitters
We have used Diamond Windows on several occasions, the most recent being last week, when they fitted three windows for us. The whole experience was excellent, from the initial quotation to the actual fitting. Chris was very good at keeping us informed, very organised and professional. The fitting team were extremely hardworking, Liam and his mate arrived promptly and carried out the fitting with no fuss and no mess. We’re very pleased with the quality of the windows and the standard of the fitting. Highly recommended.
Verified by CheckatradeA good window replacement company
The work carried out was excellent and the workmen kept the house very clean clearing up after themselves all the time and leaving no mess. They were very good and caused little disruption to the house.
Verified by CheckatradeSuperb kitchen revamp
Diamond Kitchens replaced our kitchen tops, window sill, sink and multi function taps. The work was exactly as promised, beautifully done, clean and tidy throughout. Made a huge difference to our kitchen and the people involved could not have been more helpful. It was completed really quickly and competitively priced. Highly recommended.
Verified by Checkatrade
VERY competitive price. Great comms. No pushy sales approach Work completed to v high standard Happy to recommend
Verified by CheckatradeVery nice windows
We had three windows replaced, the Fitters were very polite, respected my property and used covers on floors and stairs.
Verified by Checkatrade
A very professional and excellent job.I would definitely recommend Diamond Windows to my friends.The customer service was also very helpful and I am delighted with my new doors .
Local context
Rated 4.9, in line with the local average for builders in Birmingham
Across 309 builders in Birmingham, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
4 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Registers and membership directories
Business and public registers
Public evidence last checked May 2026
About
Diamond Windows has been vetted and approved by TrustATrader. Covering 50 Mile Radius of Birmingham
Services they list
Aluminium Doors InstallationAluminium Windows InstallationBay Windows InstallationBespoke Kitchens - Supply & InstallationBifold Doors InstallationComposite Front Doors InstallationConservatory InstallationFrench Doors InstallationOrangeriesPatio Doors InstallationPorch InstallationStable Doors
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
DroitwichWorcestershire
The areas they list covering on a public directory; confirm they cover your address before you book.
What this business says about itself
From their own website
What this business says about itself
See their work: Photo gallery (opens in new tab) · Instagram (opens in new tab)
- Guarantee: Ten years for white UPVC frames
- Experience they state: Over 30 years
- Areas served: Shirley, Castle Bromwich, Solihull, Sheldon, Hall Green, Sutton Coldfield, Coleshill, Water Orton
- Good to know: Free quotes · No deposit / pay on completion
Accreditations it displays. Confirm each is current on the official register before you hire:
- CERTASS · verify (opens in new tab)
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Independent checks
About this business
Steadily reviewed31 reviews in the last 12 months, in line with their long-term review pace of about 34 a year.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
This trade isn't licensed in the UK, so anyone can set up. TrustMark is the only Government-endorsed quality scheme for work in and around the home - check whether they're registered, or find a TrustMark-registered business.
Check the TrustMark registerNever pay a large deposit up front. Agree a staged payment schedule tied to completed milestones, and hold a small retention until snagging is done.
Get it in writing: an itemised quote with scope, materials, start and finish dates, and how any changes (variations) will be priced.
Be wary of a cash-only price or pressure to start tomorrow. Both are red flags for an unaccountable job.
Want an extra legitimacy check? Run the Cowboy Checker on Diamond Windows before you contact them.
Run Cowboy Checker →Good to know
Common questions about Diamond Windows
Is Diamond Windows a legitimate business?
Diamond Windows has 374 independent public reviews, rated 4.9 out of 5, gathered and cross-checked across 2 review sources. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Diamond Windows?
Diamond Windows has 374 public reviews, averaging 4.9 out of 5, gathered across 2 review sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know Diamond Windows' reviews are genuine?
Diamond Windows' 374 public reviews are gathered and cross-checked across 2 review sources. Reviews spread across several review sources are harder to fake than a single polished page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Has Diamond Windows had recent public reviews?
Diamond Windows has 31 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
Is Diamond Windows qualified and accredited?
We hold 2 independently sourced credentials for Diamond Windows, including Waste carrier (Environment Agency), TrustATrader Approved. Each is attributed to the body that issued it in the credentials section. For example, Waste carrier (Environment Agency) is the Environment Agency: the regulator a trader must register with to carry waste or hold an environmental permit in England.
Does Diamond Windows guarantee their work?
They state on their own website that ten years for white UPVC frames. This is the business's own statement on their website, not something we have independently checked. Get the terms in writing before you agree to the job.
What does Diamond Windows specialise in?
Diamond Windows lists specialist services including Aluminium Doors Installation, Aluminium Windows Installation, Bay Windows Installation, Bespoke Kitchens - Supply & Installation, Bifold Doors Installation, Composite Front Doors Installation. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
What areas does Diamond Windows cover?
They state on their own website that they cover Shirley, Castle Bromwich, Solihull, Sheldon, Hall Green, Sutton Coldfield, Coleshill, Water Orton. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
How long has Diamond Windows been trading?
Diamond Windows has been reviewed on public sources since 2015.
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