SGS Windows
Your Local Area, Your Local Area
Checkatrade member since September 2024
Accepts Checkatrade Pay
We guarantee the work for up to £1,000 for 12 months. T&Cs apply
Services
- Aluminium Doors Installation
- Aluminium Windows Installation
- Bay Windows Installation
- Bifold Doors Installation
- Composite Front Doors Installation
- Conservatory Installation
- Doors Supply
- Double Glazing Installation
- Exterior Doors Installation
- French Doors Installation
- Patio Doors Installation
- Stable Doors
- Triple Glazing Installation
- UPVC Doors Installation
- UPVC Windows Installation
- Window Fitters
- Windows Supply
- Windows and Doors
- Bifold Doors Repair
- Glass Replacement
Customer Reviews
Write a review9.75 /10
Based on 41 reviews over the past 12 months
Quality of work
9.73
Reliability
9.76
Communication
9.76
What customers are saying
AI-generated from customer reviews over last 24 months
Customers consistently praise this trade for their professionalism, excellent communication, and high-quality, tidy workmanship from start to finish.
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Reviews (94)
- DDanielle C
10 New Front door and set of French doors
Posted 3 days ago
Very happy with our doors! Look great done really quickly all done in a morning. Very patient with us while we arranged or times around work schedules. Very friendly crew and even fussed the dog. Would recommend.Verified reviewerJob location: DL3 10 A good service.
Posted 28 April
I was very pleased with the service that Alan provided. He gave good advice, and communicated on a regular basis, keeping me up to date with the order. The window fitters were polite and friendly, and took pride in their work. A good job.Verified reviewerJob location: TS77 Poor after sales service
Posted 24 April
Job location: SR3Communication was poor. I provided a spare key for access, but the fitter ignored this, left my door unlocked, hid the key under the mat, and then complained he couldn’t get in the next day. He damaged freshly plastered and painted walls, knocked the toilet and caused a leak, and didn’t turn off the water, which caused electrical damage, including a ruined new light fitting and wiring yet denied responsibility. Replastering around the windows was poor and messy and after-sales service is poor, and despite having trickle vents installed, I didn’t get a FENSA certificate and ignored my requests.Response from SGS Windows
Hi Samantha, thank you for your feedback. We must clarify several points that do not reflect the full situation. The property had been fully plastered and decorated before installation, which is not standard and increases the risk of cosmetic disturbance during window works. We strongly dispute claims of negligence and were not given the opportunity to inspect or resolve any issues raised. FENSA certification is processed after completion and we’re happy to assist with this. We always aim to resolve concerns directly and professionally, so please contact us to discuss further.
- NNigel S
10 Replacement front door
Posted 23 April
Alan responded very quickly to the job request (replacement front door and a window in the external garage). Came to measure up the same day and provided all necessary information. The fitters did a thorough and professional job. Very pleased with the service.Verified reviewerJob location: TS26 10 When is a door not just a door? When you buy it from SGS Windows.
Posted 18 April
It was a delight to deal with such a professional company from enquiry through to installation. Alan and his team are punctual, polite, knowledgable and a credit to the industry. It is so rare to find such tradespeople like them. I am so pleased with the new door. Good price, great product, excellent service, 5 star rating through and through. Thank you all.Verified reviewerJob location: DL14- MMaggie S
9.67 Porch installation
Posted 17 April
We are really pleased with our newly installed porch. Alan brought samples of windows for us to see and he clearly explained the options available to us. There was no hard sell. He was just polite, courteous and informative as were the people who installed it. A small issue was resolved very quickly, which was much appreciated. Communication was excellent. ThanksVerified reviewerJob location: DH1
Photos
Company Info
Owner
Mr Alan Slasor
Sole Trader
2 years on Checkatrade
VAT Registered
Yes: GB493218183
SGS Windows is a trusted local specialist in uPVC windows, doors, and conservatories, serving Stockton-on-Tees and the surrounding areas. With over a decade of experience and consistently high ratings on Checkatrade, we provide reliable, affordable installations backed by a 10-year warranty. Our products are sourced from Selecta Systems, a leading manufacturer known for energy-efficient and durable designs, ensuring every installation improves both the comfort and security of your home.
Our team of fitters, each with 10–20+ years of hands-on experience, takes pride in delivering neat, professional work with a focus on detail—from secure multi-point locks to perfectly sealed, draught-free finishes. We aim to make the process straightforward and efficient, offering quick surveys, clear communication, and competitive pricing—often beating written quotes. Choose SGS Windows for quality products, skilled workmanship, and dependable service at the right price.
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Member since September 2024
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