Hardwood lasts longer than softwood in raw, untreated form - that much is true. But the full answer is more useful than that. A well-made handmade wooden bench in pressure-treated softwood will comfortably outlast a poorly made hardwood bench, because construction quality and treatment matter at least as much as the species of timber. The right question is not just "hardwood or softwood" but "which timber, treated how, and built by whom."
Common hardwoods and softwoods for a wooden picnic bench
Not all hardwoods are equally durable, and some softwoods perform far better than people expect. Here is how the most common UK bench timbers compare:
| Timber | Type | Durability class (EN 350) | Typical lifespan outdoors (treated) | Relative cost | |---|---|---|---|---| | European oak | Hardwood | 2 (durable) | 25–40 years | High | | Iroko | Hardwood | 1 (very durable) | 30–50 years | High | | European larch | Softwood | 3–4 (moderate) | 15–25 years | Medium | | Scandinavian redwood (Scots pine) | Softwood | 4 (slightly durable) | 15–25 years (treated) | Low–medium | | Spruce | Softwood | 5 (not durable) | 10–15 years (treated) | Low | | Pressure-treated pine (C24) | Softwood | Enhanced to 3 | 15–25 years | Low–medium |
The durability class system runs from 1 (most durable) to 5 (least). Treatment can shift a class 4–5 softwood up to an effective class 3, which is enough for decades of outdoor use in the UK.
How treatment changes the equation
Untreated spruce left outdoors will start to rot within five years. The same spruce, pressure-treated with a modern tanalised preservative, will last fifteen to twenty years. Treatment is the great equaliser between hardwood and softwood.
Pressure treatment forces preservative deep into the timber under vacuum. It is not a surface coat - the protection runs through the full cross-section of the wood. This is why a pressure-treated softwood bench can match or exceed the lifespan of an untreated hardwood like ash or beech (neither of which is particularly durable outdoors despite being "hardwood").
For a handmade wooden bench, the combination of C24 construction-grade softwood with pressure treatment gives the best balance of durability, cost, and workability. That is what we use in our Chelmsford workshop, and it is what we recommend for most buyers.
Cost vs lifespan - the real trade-off
The honest comparison is not just purchase price. It is total cost over the bench's useful life.
| Option | Approximate cost (6-seater) | Expected lifespan | Annual cost | |---|---|---|---| | Pressure-treated softwood (C24) | £250–£450 | 15–25 years | £12–£25 | | European larch (untreated) | £350–£550 | 15–25 years | £15–£30 | | European oak | £600–£1,000 | 25–40 years | £20–£30 | | Iroko | £700–£1,200 | 30–50 years | £18–£30 |
The annual cost of ownership is remarkably similar across all options. The difference is upfront outlay and how long you want the bench to last before replacing it. For most home gardens, treated softwood is the sensible choice. For a pub or hotel investing in furniture for the long term, hardwood can justify its premium.
What we use and why
We build our benches from C24 construction-grade timber - a structural softwood graded for strength and straightness. It takes pressure treatment exceptionally well, machines cleanly, and is strong enough for coach-bolted joints that hold for decades.
Could we build in oak? Yes, and we do on request. But for most buyers, treated softwood gives a wooden picnic bench that lasts fifteen to twenty-five years at a fraction of the hardwood price. That is honest value, and we would rather give you that than charge a premium for timber you do not need.
Learn more about how we build and the decisions behind every bench. For a closer look at which timber suits the UK climate best, see our guide to the best wood for an outdoor picnic bench. If you are weighing wood against other materials entirely, our wood vs recycled plastic vs composite comparison covers that ground.
Frequently asked questions
Does hardwood always last longer than softwood?
Not always. Untreated beech and ash - both hardwoods - are rated durability class 5 and will rot quickly outdoors. Pressure-treated pine or spruce can outlast them. The species matters more than the hardwood/softwood label, and treatment matters most of all.
Is oak worth the extra cost for a picnic bench?
Oak is a beautiful, durable timber with a lifespan of 25–40 years outdoors. Whether it is worth the extra depends on your budget and expectations. For a bench you want to pass down, oak makes sense. For a family garden bench that will serve well for fifteen years, treated softwood gives the same daily experience at a lower price.
What is C24 timber?
C24 is a structural grading for softwood under BS EN 338. The "C" stands for conifer, and "24" refers to a bending strength of 24 N/mm squared. It means the timber has been assessed for straightness, knot frequency, and strength - it is a reliable, consistent material for furniture that needs to bear weight.
Can you mix hardwood and softwood in one bench?
Yes, and some makers do - for example, using oak for the tabletop and softwood for the frame. It can be a good compromise on cost. The key is ensuring both timbers are treated appropriately for their durability class and that they are compatible in terms of expansion and movement.
How often does a softwood bench need retreating?
A pressure-treated softwood bench needs a light application of oil or treatment every one to two years to maintain its appearance, and a more thorough recoat every three to five years. The preservative from pressure treatment lasts the full lifespan - the annual maintenance is mostly cosmetic.
Built from the right timber, for the right price
We build every handmade wooden bench to order from C24 construction-grade timber in our Chelmsford workshop. If you want to discuss timber options - softwood, hardwood, or a combination - tell us your requirements and we will advise. Orders are ready within 7 working days, with delivery across Essex and beyond.
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