Business Details
Premium Aluminium Doors in Hertford | DSL
DSL is a family business with over 25 years of expertise in supplying high-security, thermally insulated aluminium doors. Specialising in modern, traditional, and pivot door designs, we combine precision German engineering with premium materials to deliver exceptional performance and aesthetic appeal. All our products are Secured by Design and PAS24:2022 accredited, ensuring robust security and energy efficiency. Our team works closely with clients to create bespoke solutions tailored to individual preferences, including custom finishes, sidelights, and advanced access systems like fingerprint entry.With showrooms across the UK, we provide nationwide support for residential and commercial projects, offering 0% APR finance options and comprehensive after-sales service. Our commitment to quality is reflected in our 5-star customer reviews, highlighting seamless installations, durable craftsmanship, and exceptional customer care.
Services
Modern Aluminium Doors
Traditional Style Doors
Pivot Hinged Doors
Stable Doors
Bullet-Proof Doors
Thermal Insulation Solutions
Fingerprint Entry Systems
Custom Sidelights
Door Financing
Nationwide Installation
Highlights and features
- Over 25 years of expertise in high-specification aluminium door systems
- All doors meet Secured by Design and PAS24:2022 security standards
- Bespoke designs with over 40 door styles and custom finishes available
- Nationwide showroom network with expert consultation and installation
- 0% APR finance options and comprehensive after-sales support
Associations and certifications
- Secured by Design
- PAS24:2022
What people say
Faultless performance since 2017
Expert knowledge saved the day
Seamless installation process
Perfect fit for renovation project
Impeccable service from start to finish
Services
Modern Aluminium Doors
Our modern aluminium doors combine sleek aesthetics with advanced security features, featuring flush interior/exterior designs and U-values as low as 0.67W/mK. These doors offer exceptional thermal efficiency while maintaining a minimalist appearance, with options for triple glazing and custom powder-coated finishes. Available in multiple configurations including the Entre and Excellence ranges, they suit both new builds and replacement projects requiring contemporary architectural solutions.
Pivot Hinged Doors
Pivot hinged doors represent the pinnacle of entrance design, offering a dramatic architectural feature with superior functionality. Constructed with precision-engineered hardware and available in bespoke dimensions up to 3m high, these doors maintain PAS24:2022 security accreditation while achieving thermal performance down to 0.72W/mK. The unique pivot mechanism allows for smooth operation and creates an impressive grand entrance for both residential and commercial properties.
Traditional Style Doors
Traditional style aluminium doors merge heritage aesthetics with modern material benefits, featuring Georgian, Victorian, and Edwardian-inspired designs without the maintenance requirements of timber. These doors incorporate authentic mouldings and panel details while retaining corrosion resistance and thermal efficiency. Available with period-appropriate ironmongery options, they provide secure, long-lasting solutions for conservation areas and historically styled properties requiring authentic visual appeal.
Bullet-Proof Doors
Our bullet-resistant doors meet FB4 ballistic protection standards, offering advanced security for high-risk environments while maintaining aesthetic versatility. Constructed with multi-layer composite materials within aluminium frames, these doors provide discreet protection against handgun threats without compromising thermal performance or design flexibility. Available in both modern and traditional styles, they integrate seamlessly with standard residential and commercial architecture.
Fingerprint Entry Systems
Ekey home integra fingerprint entry systems provide keyless security solutions that eliminate lock-picking risks while maintaining seamless design integration. These biometric access systems offer individual user profiles and audit trail functionality, compatible with both new installations and retrofit applications. The touchless entry mechanism enhances convenience while maintaining the door's structural integrity and security certifications.
People
Julie
Customer Service Representative
With extensive product knowledge, Julie provides expert guidance throughout the door selection process, ensuring clients receive tailored solutions that meet both aesthetic and functional requirements while maintaining security standards.
Jason
Installation Specialist
Jason leads fitting teams with precision expertise, delivering flawless installations across diverse property types while maintaining the highest standards of workmanship and customer care throughout the UK.
Ivan
Installation Specialist
As a skilled installer, Ivan combines technical proficiency with attention to detail, ensuring perfect door alignment and functionality while providing clear communication during the fitting process.
Graham Brittain
Sales Consultant
Graham offers specialist advice on door specifications, coordinating remote consultations and measurements to ensure perfect product fitment for properties nationwide, particularly supporting non-local clients.
Questions
What security accreditations do your doors have?
All doors carry Secured by Design and PAS24:2022 accreditations, with options meeting FB4 ballistic protection standards for enhanced security requirements.
Can I customise my door's appearance?
Yes, we offer over 40 door styles with custom dimensions, 19 standard colours, wood effects, metallic finishes, and optional sidelights to match individual architectural preferences.
How do your aluminium doors perform thermally?
Our doors achieve U-values as low as 0.67W/m²K with triple glazing, significantly exceeding building regulations while reducing energy costs through superior thermal insulation.
Do you provide nationwide installation?
We coordinate professional installations across the UK through our network of approved installers, with showroom support available in Truro, Hertford, Swindon, and Surrey.
What financing options are available?
0% APR finance over 12 months is available through Ideal4Finance, subject to credit approval, making premium door upgrades accessible without upfront cost concerns.
How do stable doors function?
Our aluminium stable doors feature independent top/bottom operation for controlled ventilation, combining traditional farmhouse aesthetics with modern materials that resist warping and require no painting.
