How Much Does a New Roof *Really* Cost in the UK?

It’s the first question everyone asks. Whether I’m up on a roof in Hove or having a cuppa with a client in Worthing, the conversation always starts with, “So, Jan, what’s the damage going to be?” People want a straight number, but the truth is, anyone who gives you a flat price online without seeing your roof is just guessing. It’s like asking how much a car costs – is it a Fiesta or a Ferrari?

I’m not here to give you vague national averages. I’m here to tell you what I see on the ground in Sussex every day. Here’s my honest, no-nonsense breakdown of what actually goes into the price of a new roof.

What ACTUALLY Determines the Cost of a New Roof?

Forget the online calculators for a minute. These are the real-world factors that dictate the final figure on your quote.

1. The Obvious: Size and Shape

Bigger roof, more materials, more labour, bigger price. Simple. But it’s not just about square metres. A simple, rectangular pitched roof is far quicker (and cheaper) to do than one with multiple valleys, hips, and dormer windows. Each of these features adds complexity and time, which means more cost.

2. The Materials You Choose

This is a huge variable. For a pitched roof, you could be looking at:

  • Concrete Tiles: The most common and budget-friendly option. Durable and do the job well.
  • Clay Tiles: More expensive than concrete, but many people prefer their classic look, especially on period properties in areas like Brighton.
  • Slate: The premium option. Natural slate looks fantastic and can last a century, but it comes with the highest price tag for both material and the skilled labour needed to install it.

For a flat roof, the choice is usually between traditional felt, GRP (fibreglass), or EPDM (rubber). Each has its own price point and lifespan, which is a whole other topic.

3. Access and Scaffolding

This is the hidden cost that catches so many homeowners out. If you have a detached bungalow with a wide garden, access is easy. But if you’re in a terraced house in the middle of Hove with no rear access? The cost of scaffolding skyrockets. It has to be carried through the house, or a crane might be needed. Safety is non-negotiable, and proper scaffolding is a significant part of the budget.

4. The ‘Extras’ People Forget

A new roof isn’t just about the tiles or the felt. The price I give you is for the whole system. This includes:

  • Skip hire for the old roof materials.
  • New breathable membrane and timber battens. You can’t put new tiles on rotten old wood.
  • Leadwork. Proper lead flashing around chimneys and in valleys is critical and requires skill.
  • Fascias, soffits, and guttering. It makes no sense to put a brand new roof on and leave rotting fascias and clogged gutters.

Can You Give Me Some Ballpark Figures for Sussex?

Alright, with all those warnings out of the way, here are some very rough figures based on jobs I regularly do. These are NOT quotes, they are just to give you an idea.

A Typical Terraced House Pitched Roof in Brighton

For a standard 2/3-bed terraced house, replacing the roof with standard concrete tiles, including new felt, battens, and scaffolding, you’re likely looking somewhere in the £7,000 – £12,000 range. If you want slate or clay, that figure will climb. You can read more about what’s involved in replacing a pitched roof on a terraced house in Brighton on my service page.

A Standard Garage Flat Roof in Worthing

A single garage is one of the more straightforward jobs. For a new GRP fibreglass roof, you’re typically in the £1,500 – £2,500 bracket. The cost for a new garage flat roof depends heavily on the state of the timber deck underneath.

A Rear Extension Flat Roof

For a typical 3m x 5m rear extension, a new high-performance flat roof system will likely cost between £3,000 and £5,000. This is a crucial area to get right, so don’t cut corners on the flat roof on your rear extension.

What About Just a Small Repair?

If you’ve just got a slipped tile or a minor leak, you’re not looking at a full replacement. A small, straightforward repair could be a few hundred pounds. An urgent leak repair is about stopping the damage quickly and effectively.

How Do I Avoid a Cowboy Quote?

If a price sounds too good to be true, it is. Simple as that. Red flags include:

  • A quote given over the phone without a site visit.
  • Vagueness about materials, scaffolding, or waste disposal.
  • A demand for a large cash deposit upfront.
  • No mention of guarantees or insurance.

My advice? Get a few detailed, written quotes. A professional won’t be afraid to break down the costs for you. The best way to get a realistic price is to book a proper roof inspection. I’ll get up there, take photos, and show you exactly what needs doing. I provide fixed-price quotes so you know exactly where you stand, and you can even track my progress with daily photo logs in your own client portal. No surprises, just an honest job for an honest price.