Replacing concrete Finlock gutters in Grantham

How do I know if I have Finlock gutters?

Finlock gutters are heavy concrete troughs that sit on top of the wall at the eaves and form the gutter and fascia in one piece. They were fitted to many post-war houses. From the street they look like a thick, square grey band below the roof tiles, with no separate plastic gutter. Checkatrade’s Grantham page has its own price line for “Concrete / Finlock gutter replacement”, which shows how common the job is locally.

Why does it cost more than standard guttering?

Removing concrete gutters is heavier work than unscrewing uPVC, and the eaves usually need a new timber frame for fresh fascias and gutters to fix to. That’s reflected in Checkatrade’s Grantham figures, where Finlock replacement averages more than double the standard roofline job. Scaffolding is often part of the price: Checkatrade gives £1,320 as the Grantham average for scaffolding hire. Ask for scaffold, removal and new roofline as separate lines in the written quote so you can see where the money goes.

What happens to the walls underneath?

Once the concrete sections are off, the top of the wall may need making good before the new eaves go on. Another method sometimes offered is to cover the wall top or line the old trough rather than remove it entirely. If you’re offered lining instead of removal, ask what that involves and how it compares on cost and lifespan. Whichever method is proposed, it should be set out in the written quote.

Questions people ask

How much does it cost to replace Finlock gutters?

Checkatrade’s Grantham page: £3,340 average, typically £2,517–£4,401.

Do I need scaffolding for gutter replacement?

Often for two-storey houses. Checkatrade lists scaffolding as an additional cost and gives £1,320 average hire in Grantham.

Prices from Checkatrade’s Grantham fascia, soffit and guttering page, checked October 2026.