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Composite doors: ideal for security, kerb appeal and energy efficiency

Based in Dundee and Glasgow, SRN Home Improvements is dedicated to enhancing home safety in Scotland. We specialise in providing residential and commercial customers with secure, energy-efficient doors that meet their unique requirements. Our composite doors combine style, durability and ultimate security, ensuring your home is protected while saving you energy and the associated costs. With our range of energy-saving windows and doors, we’re committed to making your home safer and more energy-efficient, one installation at a time.



Up to 30% off!


Finance options available


10-year guarantee included  

door being unlocked

Beautifully designed replacement composite doors

Every homeowner wants to ensure home security and energy efficiency, without compromising on style. Fortunately, our exceptional range of composite doors delivers on all fronts.


Composite doors utilise a blend of materials for unmatched strength and durability. With an internal uPVC frame reinforced by steel rods and an external GRP (fibreglass) skin for weatherproofing, they offer unparalleled security and resilience. The GRP exterior can be intricately designed to mimic wood grain finishes, providing both aesthetic appeal and robustness.


These energy-efficient doors are also injected with a CFC-free polyurethane foam core, ensuring top-notch insulation with an A-rating. For those seeking premium quality commercial or residential front doors, our toughest composite doors boast a solid timber core, guaranteeing longevity and performance. With a variety of design, finish, hardware and colour options available, replacement composite doors from SRN Home Improvements can perfectly replicate authentic timber doors while offering maximum performance for years to come.

door with T handle


Highly energy efficient

Every material that comes together to form a composite door boosts its impressive insulation and weatherproof properties. Draught proof, waterproof, resistant to warping, your new door will keep the heat where it should be: inside your home.

secure door



The structural might of the composite door is backed by advanced, multi-point locks that are anti-snap and anti-bump. Meanwhile, an internal glazing bead prevents any glazing from being removed from outside. No wonder they meet the police-approved Secured by Design scheme.

green composite door


Kerb appeal

The authentic woodgrain finish of the composite door means it looks great in properties both traditional and contemporary. What’s more, there are countless colours and glazing options to choose from. Combine that with low maintenance and high durability, and you have the best of all worlds.

black composite door

Courteous and professional 

Two weeks from my initial appointment with the salesperson my new windows and doors have been fitted!

All involved in the process have been courteous and professional and the installation team were fantastic. I am extremely pleased with the work carried out and have no hesitation in recommending SRN for their excellent products, good price, and quality of workmanship

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Want up to 30% off your replacement composite doors?

Give us a call on 0141 554 1255 or 01382 792062 to get started!

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