Business Details
40 Years
experience
Premium Windows & Doors in Plymouth
Established in 1986, Stormseal SW has built a reputation for excellence in supplying and installing high-quality uPVC windows, doors, conservatories, and roofline products across Devon and Cornwall. Our team of experts combines decades of experience with industry-recognised accreditations, including membership of Network VEKA and certifications from BSI, BBA, Secure by Design, and ISO standards. We prioritise customer satisfaction through made-to-measure solutions, a 10-year comprehensive guarantee, and impartial advice tailored to individual needs.Our commitment to quality is reflected in over 6,000 successful installations and 120+ positive reviews. We operate from our base in Plymouth, offering no-pressure consultations and free quotations while maintaining rigorous quality control through partnerships with leading manufacturers like Ultraframe. Our services address both aesthetic enhancement and functional improvements, including energy efficiency, security, and noise reduction for residential properties.
Services
uPVC Windows
Composite Doors
Conservatories
Roofline Products
Porches
Double Glazing
Fire Escape Windows
Bi-Folding Doors
Patio Doors
Traditional Roof Conservatories
Details
- Year established: 1986
Highlights and features
- We offer over 25 years of local expertise in Devon and Cornwall
- Our installations come with a 10-year comprehensive guarantee
- We provide free, no-obligation quotations with no pressure sales
- All products are made-to-measure for precise fit and performance
- We maintain industry-leading accreditations including ISO 9001 certification
Associations and certifications
- BSI
- BBA
- Secure by Design
- ISO 9001
What people say
Fantastic conservatory
Professional and fast
Second to none service
Highly recommend
Perfect addition to home
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 to strict quality standards, these windows enhance home security, reduce noise pollution, and require minimal maintenance. Available in casement, sliding sash, and tilt-and-turn styles to suit various property types.
Conservatories
We design and install custom conservatories including Edwardian, Victorian, lean-to, and ultraframe styles. Our Guardian Warm Roof system transforms existing conservatories into year-round usable spaces. All projects include free design consultations and comprehensive guarantees for both structure and installation.
Composite Doors
Our composite doors combine security with aesthetic appeal, featuring galvanised steel cores and weather-resistant finishes. Available in various styles including bi-folding, French, and patio options. Each installation includes Assure certification and a 10-year comprehensive guarantee for complete peace of mind.
Roofline Products
Modern uPVC roofline solutions replace traditional timber with durable, low-maintenance alternatives. Our systems prevent rot and water damage while improving property aesthetics. Services include full replacement of fascias, soffits, and guttering with colour-matched, weatherproof materials for long-lasting performance.
Porches
Custom-designed porches enhance property value and provide weather-protected entry spaces. Constructed with energy-efficient uPVC frames and glazing, our porches combine functionality with elegant design. Available as front or rear additions with various styling options to complement existing architecture.
Questions
What areas do you cover?
We serve Devon and Cornwall, specialising in Plymouth and surrounding regions with both residential and commercial projects.
Do you offer guarantees?
Yes, all installations come with a comprehensive 10-year guarantee covering both materials and workmanship for complete peace of mind.
Are your products energy efficient?
Our A-rated windows achieve u-values as low as 0.8W/m²K, significantly improving thermal performance and reducing energy bills.
Can you help with design?
We provide free design consultations and use online tools to help visualise and plan your perfect home improvement solution.
Are you accredited?
We hold multiple industry accreditations including ISO 9001, Secure by Design, and membership of Network VEKA for quality assurance.
How long does installation take?
Most window and door installations complete within a day, with conservatories typically taking 2-4 weeks depending on complexity.
