Business Details
Your Trusted Home Improvement Partner in Derby
Capital Windows Derby is a trusted provider of premium home improvement solutions serving Derby and the surrounding areas. With over 100 years of combined experience, our team specialises in installing high-quality windows, doors, conservatory roofs, and home extensions designed to enhance both functionality and aesthetics. Backed by accreditations from FENSA, Gas Safe, and NIC EIC, we prioritise energy-efficient systems that reduce energy bills by up to 50% while maintaining exceptional security standards. Our expertise extends to SupaLite conservatory roofs, bi-folding doors, and bespoke extensions, ensuring tailored solutions for modern living. Every project benefits from our commitment to craftsmanship, compliance with British Standards, and partnerships with industry-leading brands like VELUX and Origin.We operate with transparency, offering clear pricing and guarantees, including a 20-year warranty on select products. Our local knowledge of Derbyshire and surrounding regions ensures seamless installations that meet both regulatory requirements and client expectations. By combining advanced thermal performance technologies with durable materials, we deliver spaces that are comfortable year-round and add lasting value to properties. Our customer-centric approach includes project management support, from initial consultation to completion, ensuring stress-free experiences for homeowners and developers alike.
Services
Windows
Doors
Guardian Warm Roof System
Extensions
Orangeries
Bi-Folding Doors
Conservatory Roofs
Loft Conversions
Garage Conversions
Porches
Highlights and features
- We offer over 100 years of combined experience in home improvements.
- Our installations meet British Standards and Secured by Design requirements.
- We provide a 20-year guarantee on Origin aluminium bi-folding doors.
- Our team holds accreditations from FENSA, Gas Safe, and NIC EIC.
- We use energy-efficient materials that reduce energy bills by up to 50%.
Associations and certifications
- FENSA
- Gas Safe
- NIC EIC
Services
Windows
Our Veka Storm casement windows offer flush-fitting designs with energy-efficient insulation. Approved as the only Veka installer in the Midlands, we provide conservation-compliant solutions that reduce energy bills by up to 50% while maintaining aesthetic appeal for period and modern properties.
Doors
We supply and install reinforced GRP doors with advanced insulation and unbreakable locking systems. Available in multiple colours and glass options, our doors meet British Standards for security and include a manufacturer-backed 1,000 guarantee against forced entry.
Guardian Warm Roof System
Replacing glass or polycarbonate roofs, our Guardian Warm Roof System creates year-round usable spaces. Featuring vaulted plaster ceilings, LED lighting, and U-values as low as 1.2, these solid roofs add property value while improving thermal efficiency compared to traditional conservatory designs.
Extensions
From loft conversions to full extensions, we deliver project-managed home improvements compliant with building regulations. Our services cover Grade 1/2 listed properties and modern developments, incorporating joinery, plumbing, and electrical work by NIC EIC and Gas Safe-certified professionals.
Bi-Folding Doors
Origin OB-49 bi-folding doors combine slimline 49mm sightlines with 8-point locking systems meeting PAS 24:2016 standards. These thermally efficient doors achieve U-values of 1.2 and feature stainless steel hardware for durability, available in custom configurations up to 1200mm panel widths.
Questions
What services does Capital Windows Derby Derby offer?
We specialise in windows, doors, conservatory roofs, bi-folding doors, and home extensions. Our solutions include energy-efficient double glazing, secure door installations, and project-managed property improvements across Derbyshire.
Are your installers certified?
Yes, our team holds accreditations from FENSA, Gas Safe, NIC EIC, and Water Industry Approved Plumber schemes. All electrical and plumbing work complies with Part P and WRAS regulations.
Do you provide guarantees?
We offer a 20-year warranty on Origin aluminium bi-folding doors. Our double-glazed units come with performance guarantees, and all installations meet British Standards for durability and security.
How far do you travel for installations?
We serve clients within a 25-mile radius of Derby, covering Derbyshire, Nottingham, and Burton. For larger projects, we may consider locations beyond this range upon consultation.
Can you help with listed properties?
Yes, our team has experience working on Grade 1 and Grade 2 listed buildings. We ensure all renovations maintain historical integrity while incorporating modern energy-efficient systems compliant with conservation area requirements.
What payment methods do you accept?
We accept major credit/debit cards and bank transfers. Full payment terms are discussed during the quotation process, with options for staged payments on larger projects.
