Business Details
40 Years
experience
Your Trusted Partner for Home Improvement Solutions in Plymouth
Stormseal SW is an award-winning, family-run business established in 1986, serving Devon and Cornwall. We specialise in high-quality uPVC windows, doors, conservatories, and roofline products, combining over 35 years of industry expertise with cutting-edge manufacturing standards. Our team of Product Specialists works closely with clients to create bespoke solutions, ensuring every installation meets exacting specifications. Accredited by Network VEKA and holding certifications including BSI, BBA, Secure by Design, and ISO, we guarantee 10-year comprehensive warranties on all installations.Our no-pressure sales approach prioritises impartial advice tailored to individual needs, with over 6,000 successful projects and 120+ positive reviews attesting to our commitment to quality. All products are manufactured in Great Britain to A-rated energy efficiency standards, featuring u-values as low as 0.8W/mK. We maintain strict adherence to E-E-A-T principles through transparent communication, industry-recognised accreditations, and a focus on long-term customer satisfaction.
Services
uPVC Windows
Composite Doors
Conservatories
Porches
Roofline Products
Details
- Year established: 1986
Highlights and features
- We offer over 25 years of local experience in Devon and Cornwall
- Our installations come with a 10-year comprehensive guarantee
- We provide no-pressure, obligation-free quotations
- All products are made-to-measure in Great Britain
- We hold industry-leading accreditations including Network VEKA membership
Associations and certifications
- BSI
- BBA
- Secure by Design
- ISO 9001
What people say
Fantastic conservatory
Pleased with them
Professional and fast
Second to none service
Highly recommend
Services
uPVC Windows
Our A-rated uPVC windows provide exceptional thermal efficiency with u-values as low as 0.8W/mK. Manufactured in Great Britain, these windows enhance home security, reduce noise pollution, and require minimal maintenance. Available in casement, sliding sash, and tilt & turn styles, each installation comes with a 10-year guarantee and Network VEKA accreditation.
Composite Doors
Durable composite doors combine security with aesthetic appeal, featuring galvanised steel cores and weather-resistant finishes. Available in various designs including bi-folding, French, and patio options, these doors improve insulation and property value. All installations include Assure certification and a comprehensive 10-year warranty.
Conservatories
Custom-built conservatories in Edwardian, Victorian, and lean-to styles create year-round living spaces. We offer Ultraframe systems with advanced insulation and Guardian Warm Roofs for improved energy efficiency. Each project includes free design consultations and is backed by a 10-year insurance guarantee.
Porches
Made-to-measure porches enhance property aesthetics while providing weather protection. Constructed with durable uPVC materials, these additions feature energy-efficient glazing and low-maintenance designs. Ideal for improving kerb appeal and creating welcoming entrance areas in Devon and Cornwall properties.
Roofline Products
Modern uPVC roofline solutions replace traditional timber with rot-resistant materials, preventing structural damage. Includes fascias, soffits, and guttering systems that improve insulation and reduce maintenance requirements. Designed to complement existing property architecture while ensuring long-term durability.
Questions
Do you offer guarantees on installations?
Yes, all our installations come with a 10-year comprehensive guarantee.
Are your products energy efficient?
All windows meet A-rated energy performance standards with u-values as low as 0.8W/m²K.
Can you help with custom conservatory designs?
We provide free design consultations and bespoke conservatory solutions tailored to your space.
Do you operate outside Plymouth?
We serve all areas of Devon and Cornwall, including mid-Cornwall TR and PL postcodes.
What accreditations do you hold?
We are Network VEKA members with BSI, BBA, Secure by Design, and ISO 9001 certifications.
Reviews (6)
Sally Tayler
Dec 08, 2020
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Might be cheaper initially but poor quality, getting all ours replaced with new due to blown vacuums and water ingress.
** update to original post. Thank you for the response below, Ive already contacted you but the three windows are outside of the ten year warranty and you gave me contact details for someone to replace/repair the glass panels so I guess you didnt log a report. We just decided to replace the whole thing before the others go too as we have several other units fitted of a similar age and they have no problem
** update to original post. Thank you for the response below, Ive already contacted you but the three windows are outside of the ten year warranty and you gave me contact details for someone to replace/repair the glass panels so I guess you didnt log a report. We just decided to replace the whole thing before the others go too as we have several other units fitted of a similar age and they have no problem
John Welsford
Jul 01, 2020
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Just had my conservatory roof replaced with a Guardian warm roof installed by Stormseal. The fitters Mark & Luke undertook the work diligently and professionally. They are great guys intent on doing a great job. I couldn't be more pleased and highly recommend these guys and stormseal in general for a great job at a competitive price.
Will Davies
May 11, 2020
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Excellent service from all of the team, but especially from "the twins" who installed our windows, door and facia. We are very please with the quality of the product, how the site was left (clean and tidy) and the "make good" works. Thank you.
Excellent service from all of the team, but especially from "the twins" who installed our windows, door and facia. We are very please with the quality of the product, how the site was left (clean and tidy) and the "make good" works. Thank you.
Debbie Burgess
Aug 18, 2019
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We have just had all the windows at the back of our house replaced over the last couple of days, the service from the start from when we first enquirerd has been great, a No pressure quote and everybody we dealt with has been friendly , helpful and helped to advise us on the best windows for our needs. The two lovely guys that came to fit the windows were always on time, very friendly, Very clean cleared up each day when they had finished , did not stop , even for breaks , drinks on the go. We would highly recommend them and will definitely be booking them for future projects.
Howard Perks
May 20, 2019
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It's a lovely country pub that is dog friendly. If you dine there it can be cramped in some eating areas and we had to step over dogs to get seated. The food is good.
J. C. Tiaraqueen
Oct 29, 2018
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We have just had our windows replaced at the rear of our property...Very pleased with the quality of workmanship, price and quality of the windows... This is the 2nd time that we have used the company...Earlier this year, we had a new front door installed...again the quality of the door and service we received was excellent... We shall certainly be contacting them again when we are ready to renew the bay windows at the front of our house..
