- 19 Oct 2025|
- News
Key Findings
- Modern composite doors combine GRP skins with solid timber cores or insulating foam for superior strength and thermal efficiency compared to traditional solid timber or uPVC doors
- Multiple security features, including multipoint locking systems and robust construction, provide peace of mind, with all Doncaster Trade Frames composite doors built to resist forced entry attempts
- Contemporary styles like flush designs offer clean lines for modern homes, whilst traditional cottage collections suit period properties with decorative glazing and classic door knockers
- Energy efficiency benefits reduce heating costs through excellent thermal performance, with some doors achieving 19% better efficiency than traditional 48mm solid timber core doors
- Professional installation from a local installer ensures proper fitting and comprehensive warranties covering frames, fittings and glass for up to 10 years
Your front door makes the first impression on visitors and plays a crucial role in your home’s security and energy efficiency. Composite front doors have become the popular choice for homeowners across Doncaster seeking the perfect balance of style, security and thermal performance.
Unlike traditional solid timber doors that require regular maintenance, or the popular uPVC, composite doors feature advanced multi-material construction. The design of a composite door typically features a Glass Reinforced Plastic (GRP) skin with either a solid timber core or insulating foam core, delivering superior strength whilst maintaining excellent energy efficiency.
At Doncaster Trade Frames, we offer an extensive range of composite doors from two leading suppliers – DoorCo and Distinction Doors. Whether you’re drawn to sleek modern design with clean lines or prefer traditional style door combinations with decorative glass and natural light, our door designer options cater to every taste and property type across South Yorkshire.
What is a composite door?
A composite door combines multiple materials to create an external door that outperforms single-material alternatives.
The construction typically features a GRP skin ( a form of tough plastic) outer layer for weather resistance and low maintenance, paired with a solid timber core or foam-filled interior for structural integrity and thermal efficiency. This combination delivers the authentic appearance of solid timber with none of the warping, cracking or regular maintenance requirements.

What do I need to consider when choosing a new front door?
Selecting your new front door involves several important factors that will affect both your home’s appearance and performance for years to come.
Door styles and design options
Modern composite doors offer remarkable variety in design. Contemporary styles feature flush panels and clean lines that suit new builds and modern properties perfectly. The cottage collection provides traditional charm with raised panels and classic proportions ideal for period homes. Victorian composite doors recreate authentic historical details whilst benefiting from modern materials and security features.
Popular choices include black composite doors for striking contemporary appeal and grey composite doors that complement virtually any exterior colour scheme. The wide range of colours available means you can match your home’s existing palette or create an eye-catching contrast.
Glazing and natural light options
Decorative glass transforms your entrance whilst allowing natural light into your hallway. Options range from simple clear panels to intricate leaded designs with stainless steel or brass detailing. Many homeowners choose coordinating side panels to maximise light whilst maintaining the door’s proportions.
Consider how much natural light you want versus privacy requirements. Frosted or textured glass provides excellent compromise, whilst plain glass maximises brightness.
Hardware and finishing touches
Door knockers, handles and letterboxes complete your entrance’s appearance. Stainless steel hardware suits modern composite designs, whilst traditional brass or black ironwork complements cottage collection styles. Quality hardware not only looks better but also withstands daily use and weather exposure.
Advanced security features
Modern external composite doors incorporate sophisticated security systems as standard. Multipoint locking mechanisms engage at multiple points along the door frame, whilst anti-snap cylinders and reinforced strike plates prevent common break-in methods. The robust construction using GRP skin and solid core materials provides natural resistance to forced entry.
Materials and thermal efficiency
The choice between solid timber core and insulating foam affects both performance and cost. Foam cores excel in thermal efficiency, reducing energy consumption and heating bills. Solid timber cores provide traditional feel and superior acoustic properties, as well as added security for your peace of mind. Both options significantly outperform basic uPVC doors for insulation.

What are the best options available to me?
Doncaster Trade Frames supplies composite doors from two premium manufacturers, each offering distinct advantages for different homeowner requirements.
DoorCo composite doors
DoorCo’s innovative GRiPCORE technology represents the latest advancement in composite door construction. This system combines foam insulation with horizontal timber supports and aluminium stability panels, delivering exceptional thermal efficiency with a U-value of 0.86. This translates to lower energy bills, as the heat will not be able to escape your home in the window, or enter it in the summer – meaning you’ll be less dependent on appliances like radiators.
The range includes three distinct collections: Designer series featuring the popular Monza II with linear etched detailing and smooth Links doors with aluminium-style appearance; Contemporary collection with flush designs and subtle wood-grain textures; and Traditional series including panelled and farmhouse styles with stable door options available.
Modern AR technology allows you to visualise selected designs in your own home by scanning QR codes, making the door designer process more interactive and confident.

Distinction composite doors
Distinction Doors offers three comprehensive ranges catering to every architectural style. The nxt-gen collection focuses on contemporary flush designs with clean lines perfect for modern homes. Signature range provides traditional styling with tongue-and-groove effects and classic proportions. The Contemporary collection features bold geometric patterns and striking glazing configurations.
Their exclusive colour palette includes over 30 bespoke options, with the flexibility to specify different colours for interior and exterior faces. The innovative double rebated range offers 50% greater thickness for improved thermal performance and noise reduction.
Frequently Asked Questions
Are composite doors more secure than UPVC doors?
Yes, composite doors provide superior security through robust multi-material construction, advanced multipoint locking systems and reinforced cores that resist forced entry attempts significantly better than standard UPVC doors.
How much more energy efficient are composite doors compared to traditional options?
Modern composite doors achieve up to 19% better thermal efficiency than traditional solid timber doors and substantially outperform basic UPVC alternatives, reducing energy consumption and heating costs.
What maintenance do composite doors require?
Composite doors need minimal maintenance – simply clean with warm soapy water and a soft cloth. The GRP skin resists fading, warping and cracking without requiring regular painting or treatment like solid timber doors.
Can I get side panels to match my composite door?
Yes, matching side panels are available for most door styles, allowing you to create impressive entrance combinations whilst maximising natural light in your hallway.
How long do composite doors last?
Quality composite doors easily last 20-30 years with minimal maintenance. At Doncaster Trade Frames, we provide comprehensive warranties including 10 years on frames and fittings, demonstrating confidence in long-term performance.

Who are Doncaster Trade Frames?
Doncaster Trade Frames has served South Yorkshire homeowners since 2013 as a trusted family-run business specialising in high-quality windows, doors and conservatories. Our comprehensive product range includes composite front doors, UPVC and aluminium windows, French doors, sliding patio doors and modern conservatory systems.
As Certass Trade Association members and Thermal Rating Register fabricators, we maintain rigorous quality standards verified by independent testing. Our composite door installations come with guarantees: 10 years on frames, 10 years on fittings, 5 years on glass and 10 years on composite door slabs.
Ready to transform your entrance with the perfect composite door? Contact our friendly team today for a free, no-obligation quote. Call 01302 891426, email doncastertradewindows@live.co.uk, or visit our Doncaster showroom to explore the full range of styles and options available for your home.