Replacing Guttering and Fascias: Costs and Materials

Most quotes cover the same visible components and differ in what happens behind them — the condition of the timber, the fixings used, and whether the falls are set correctly.

What the job includes

Fascia boards carry the guttering and close the roof edge. Soffits are the horizontal boards underneath, and they usually need ventilation to keep the roof space dry.

Bargeboards run up the gable ends. Guttering and downpipes carry water away to a drain or soakaway.

A full replacement addresses all of it. Replacing gutters alone onto rotten fascias is a common false economy, because the new gutter is only as secure as what it is screwed to.

Capping versus full replacement

Capping means cladding over existing timber with plastic rather than removing it. It is cheaper and faster.

It also traps whatever condition the timber is in. Where the wood is sound and dry, capping is defensible. Where there is any rot, it hides a problem that continues underneath.

Ask specifically which is being quoted, because the price difference is significant and the descriptions are frequently vague.

Materials

uPVC is the standard choice: inexpensive, no painting, and adequate for most properties. Quality varies, and cheap sections discolour and become brittle.

Aluminium is more expensive, considerably more durable, and available in seamless runs formed on site, which removes joints and therefore removes the most common leak point.

Cast iron suits period and listed properties and sometimes is required in conservation areas. It costs substantially more and needs periodic painting.

The details that determine whether it works

Falls. Gutters must slope consistently toward the outlet. Poorly set falls leave standing water, which overflows in heavy rain and accelerates failure.

Bracket spacing. Too few brackets and the gutter sags between them, creating the same problem. Ask what spacing will be used.

Downpipe discharge. Water must reach a drain or soakaway, not simply exit onto the ground beside the wall. Check where each downpipe currently goes and where it will go afterwards.

Ventilation in the soffit, which prevents condensation in the roof space. Sealing a soffit without ventilation causes problems that appear later as damp timber.

Access and pricing

Scaffolding or a tower is normally required, and its cost is a substantial share of the total on a two-storey property. Quotes that omit access arrangements are incomplete.

Where other roof-level work is planned — roofing, painting, chimney repairs — sequencing it together shares the access cost and saves meaningfully.

Getting comparable quotes

Specify capping or full replacement, the material, and whether downpipe routing changes.

Ask what happens if rot is found once the old boards come off, and how additional timber is priced. This is the most common variation.

Ask about disposal of the old material and about making good any decoration disturbed.