
New Gutter Installation
New-build, extension or conversion? We fit correctly sized, properly graded guttering from day one.
- Sized and graded to your exact roof area
- UPVC, aluminium & cast iron options
- New builds, extensions and conversions covered
Get Your Gutters Right From the Start
Guttering that is undersized, badly graded or poorly supported will cause problems from day one. Water overflows, pools at low points and runs down walls instead of reaching the downpipe. On new builds and extensions, getting the specification right first time saves thousands in remedial work later.
Radiant Roofing installs new guttering systems designed around your property. We calculate the correct gutter size, downpipe capacity and gradient for your roof area, then fit the system with properly spaced brackets and sealed joints — ready for decades of reliable drainage.

How It Works
Site Survey
We measure the roof area, calculate water run-off volumes and plan the gutter layout, downpipe positions and outlet sizing.
Specification & Quote
You receive a detailed specification with material choice, system sizing and a fixed installation price.
Professional Installation
We fit the full system — brackets, gutters, outlets, downpipes and connections — to the calculated gradient for reliable flow.
Test & Guarantee
The entire system is flush-tested with water. Installation is backed by our workmanship guarantee and material warranties.
Site Survey
We measure the roof area, calculate water run-off volumes and plan the gutter layout, downpipe positions and outlet sizing.
Specification & Quote
You receive a detailed specification with material choice, system sizing and a fixed installation price.
Professional Installation
We fit the full system — brackets, gutters, outlets, downpipes and connections — to the calculated gradient for reliable flow.
Test & Guarantee
The entire system is flush-tested with water. Installation is backed by our workmanship guarantee and material warranties.
What Our Gutter Installation Service Includes
We design and install complete rainwater systems for new-build properties, extensions, garage conversions and outbuildings. Every system is engineered for your specific roof area and local rainfall levels.

What Does Gutter Installation Cost?
Typical price range
£350 – £2000
VAT may apply depending on the project
Factors that affect the price:
- 1Total length of new gutter run required
- 2Material choice (UPVC, aluminium, cast iron)
- 3Number of downpipes, angles and outlets
- 4Property height and access requirements
- 5Complexity of roof layout (valleys, dormers, multiple roof sections)
A single-storey extension typically costs £350–£600 for UPVC. Full house installations vary by size and material. We provide a fixed written quote after survey — no surprises.
What Our Customers Say
Verified Google ReviewsJane S.
Kent
They were very friendly, professional and polite and left the site immaculate at the end of the day. I would thoroughly recommend them to others. The work was carried out to a very high standard.
Peter B.
East Sussex
Excellent work, highly recommended! Very knowledgeable, by far the best roofing company we have ever used and super nice guys.
Sarah M.
Surrey
Radiant Roofing completed our roof repair quickly and professionally. Great communication throughout and a fantastic result.
Frequently Asked Questions
Costs depend on the length of gutter run, material choice and property complexity. A UPVC system for a single-storey extension typically costs £350–£600. A full house installation in UPVC ranges from £600 to £1,200, while aluminium and cast iron systems are higher. We provide a fixed quote after survey.
Most residential installations are completed in one to two days. A simple extension or garage may only take half a day. Larger properties or cast iron systems may require two to three days. We confirm the timeline in your quote.
Yes. If you are extending or adding to an existing property, we match the profile, colour and material of your current guttering so the new section blends seamlessly. We carry a wide range of profiles in UPVC, aluminium and cast iron.
We cover Kent, East Sussex, West Sussex and Surrey. Our teams regularly fit new guttering in Tunbridge Wells, Crowborough, Sevenoaks, Tonbridge, Uckfield, Haywards Heath, East Grinstead and the surrounding areas.
Yes. All new installations are covered by our workmanship guarantee. Materials carry manufacturer warranties — typically 10 years for UPVC, 25 years for aluminium, and longer for cast iron. If a fault develops with our installation, we return and fix it at no charge.
Contact Us!
Get in touch with us!
Looking for a free quote? Just fill in the form below, and we'll take care of the rest!
Contact Information:
Mobile (24/7): 07753 165 005
Landline (Office Hours): 01892 356 967
Email: contact@radiantroofing.co.uk
Head Office:
Address:
Alpha House
Crowborough Hill
Crowborough
TN6 2EG
Opening Hours:
Monday to Friday: 7:30 am – 6:00 pm
Saturday: 7:30 am – 12:00 pm
Sunday: Closed (mobile still available)
Our Mobile and Email is available 24/7