Fascia and Soffit Materials: uPVC, Timber or Aluminium?

Before comparing materials, it helps to know what each board has to do. The fascia carries weight. Gutter brackets fix into it, and a gutter full of rain is heavy. It also gives the bottom course of tiles or slates something to lie against, and on many houses it hides the cut ends of the rafters, which are the angled timbers holding up the roof. The soffit does lighter work. It closes the gap beneath the overhang so birds and wasps cannot get in, and many soffits carry a vent strip that lets air into the loft.

Does the material change how the roof works?

It can. A thick, stiff board holds a gutter straight for longer. A board that swells in wet weather pulls screws loose and leaves a gap along its top edge. A vented soffit only helps if the vent is not painted over or choked by insulation pushed hard against it, which is a ventilation job as much as a board job.

What should you look at before choosing a board?

Look at the timber behind it. A new fascia screwed to soft rafter ends only hides the rot for a season or two. Good replacement work starts by finding sound wood, cutting back or repairing what has gone, and only then choosing the board that suits the house. The material comes second to that. Ask whoever quotes whether the rafter ends will be checked, and what happens if they turn out soft, because that changes both the work and the price.

uPVC is the plastic many people have in mind when they say "white plastic fascias". It is sold as a hollow-section board, a flat cover board and a soffit panel, and it arrives in white, black, grey and a few woodgrain finishes. It needs no painting, which is its main attraction, and a wipe with warm water takes off most green growth.

What lifespan do sellers quote for uPVC?

One online retailer of uPVC boards says they last "between 20 and 40 years". That firm sells the product, so read it as the seller's own estimate and not a neutral test result. Sun, shade, the quality of the board and how well it was fixed all move the real figure. Our answer on uPVC fascia lifespan goes through the signs of age.

Where does uPVC let you down?

Cheap, thin board can bow between fixings in summer heat, and white board can yellow on a south-facing elevation. Joints are another weak point, because the board expands and contracts and a poorly cut corner opens up. Colour matching is awkward too: a single replacement section never quite matches boards that have faded for years, so repairs on a long run often turn into replacing the whole side.

The big advantage is that uPVC does not rot. That matters on the Levels and in the Quantock and Blackdown Hills villages, where driving rain finds every unpainted edge. It is also the lowest-maintenance option if the timber behind has been repaired and kept dry.

Timber boards are what most houses had before plastic arrived, and many Victorian and Edwardian terraces in Taunton still carry them. Painted softwood can look right on a period house in a way that a hollow plastic board does not, because the profile can be planed to match the original and the paint colour chosen freely.

Why do timber fascias rot?

Rot starts where water sits. The bottom edge, the joints between boards and the back face behind a leaking gutter stay damp longest. Once paint cracks, the grain takes up water, swells, and the coating lifts further. A gutter that has been overflowing for years soaks the same board in the same place every storm. Fixing the leak is as important as replacing the board, and our page on capping fascias explains the alternative to taking timber out.

Is timber worth the repainting?

It is if the house suits it. Expect to repaint on a regular cycle, and to prime and seal every cut end when boards are fitted, because bare end grain drinks water. A well-painted timber fascia on sound rafters can outlast a cheaper plastic board, though no one can promise a lifespan, and the paint is the maintenance cost you accept.

For listed buildings and most homes in a conservation area, timber is often the material the council expects to see. Somerset Council lists several conservation areas in Taunton itself, among them Castle Green and Bath Place, designated on 15 January 1975. Ask the council's planning team before changing the material on boards that face the street.

Aluminium is the one metal you meet often on fascia and soffit work. It comes as a thin formed sheet, powder-coated in a range of colours, and is usually fitted as a cladding that wraps over existing timber or as a soffit panel. It will not rot, and it does not need repainting in the way timber does.

Is aluminium better near the coast or in damp areas?

Because it does not take up water, aluminium suits exposed, wet spots, which includes parts of the Levels and the hills where moss and damp hang about all winter. It is lighter than other options, so it puts little extra load on tired rafter ends. A watertight joint at every corner matters more than the metal itself, because that is where the weather gets behind it.

What are the downsides?

Aluminium dents if a ladder or a falling branch hits it, and a dent is hard to hide on a flat panel. A scratch through the coating shows bare metal. Colour choice is wide, but a custom colour costs more and takes longer to arrive, and the sheet needs a sound surface to sit on. If the timber behind has rotted, covering it with metal only hides the problem, just as it would with plastic.

Aluminium also pairs naturally with aluminium guttering, and some firms form seamless gutters on site from a coil of the same metal. Whichever metal you choose, ask what fixings and sealant will be used, so you know exactly what is going on the house.

Fibre-cement soffit and fascia board is a flat, stiff sheet, usually painted, and you will find it on houses of all ages. The difficulty is that some older boards contain asbestos, and from the ground you cannot tell which.

Could my old soffits contain asbestos?

The Health and Safety Executive lists asbestos insulating board, usually shortened to AIB, as one of the materials found in "external soffits". It adds that the board looks much like its non-asbestos equivalents, so the eye cannot sort one from the other. Its advice, for any building built or refurbished before 2000, is to presume asbestos is there. A flat grey or white board on an older Taunton house therefore counts as possible asbestos until a test says otherwise. Our guide to asbestos soffits goes into the detail.

Can a roofer simply take it down?

Not before that check. Taking AIB soffits down is often work that needs a licence. Whether it does depends on the risk assessment rules HSE sets, so the board gets identified first. Asbestos waste moves under a consignment note and is never put in a skip. Breaking a board up with a bar to get it off creates dust, which is the very thing to avoid. If you suspect a board, leave it alone, keep it dry and intact, and ask for it to be tested before any quote for replacement is agreed.

Where a board is sound and intact, leaving it in place may be the safest route, with new boards fitted in front. A surveyor or a specialist asbestos contractor can advise on that once the result is back.

Start with the house, then the budget. A 1930s semi on one of Taunton's interwar estates with rotten timber boards and a sagging gutter is usually a straightforward candidate for uPVC or aluminium. A Victorian terrace in a conservation area is a different conversation, because the council may expect timber and the profile of the board is part of the street.

What does capping cost?

Capping means fitting a new cover over sound existing boards, which is quicker than ripping everything out. For capping fascias and soffits, the typical UK average is around £800 (MyJobQuote, Sep 2026). That is a national average and not a Taunton price. A full replacement, scaffolding for a second storey, a long run or boards found rotten behind all push the figure up, and a short bungalow run can come in lower.

Do you need planning permission?

Like-for-like replacement boards on an ordinary house rarely raise a question. A listed house is different, because listed building consent covers any alteration that changes its character, and a conservation area or an Article 4 direction may alter what you can swap.

When you are ready to compare materials for a specific house, our gutters, soffits and fascias service page sets out the work. Check each quote for VAT and scaffolding, then choose the board that fits the timber behind it.