Resin vs block paving vs tarmac: which driveway suits a Watford home?
For most Watford homes: block paving if you want traditional looks and easy repairs (£65-£115/m², 20-30 years); resin bound if you want a modern finish, zero weeds and no planning issues (£65-£115/m², 15-25 years); tarmac if budget or size leads (£40-£80/m², 15-25 years). The full trade-offs are below.
Last updated: September 2026.
The short version
All three are proven on Watford ground when the sub-base is done properly. The real decision is what you value: looks (block paving's range, and its period-friendly sett styles), convenience (resin's no-weeds, no-planning package), or value (tarmac, especially over 60m²). Everything else is detail, but the detail below is where money is saved and mistakes are avoided.
Cost: tarmac wins, the other two tie
Tarmac is 30 to 40% cheaper per metre than the paved options, and its advantage grows with area: on an 80m² drive the saving against resin can reach £2,000 to £3,000. Resin and block paving cost about the same per metre installed, though permeable block systems push blocks higher.
Drainage and planning: resin's free pass
Resin bound is permeable, so it is exempt from the rule that paving over 5m² of a front garden needs planning permission. Standard block paving and tarmac are not: they need either consent or drainage to a lawn, border or soakaway. If your frontage has nowhere obvious to drain to, resin is often the cheapest compliant option even where block paving looks cheaper on paper.
The Watford look: red brick changes the equation
On Watford's Victorian and Edwardian red-brick streets, plain black tarmac is the weakest choice visually, while tumbled or sett-style block paving in brindle or buff looks genuinely at home. Resin in a natural golden or silver-grey aggregate blend works well too, and gravel (not in this head-to-head but always worth considering on period plots) is the traditional surface of all. On the newer estates towards Kings Langley and Leavesden, the equation flips: resin's seamless finish suits new brickwork best.
Longevity and repairs: blocks are forever (if based right)
Block paving's hidden superpower is repairability: lift, re-sand, relay, and the repair is invisible. Resin patches show, and tarmac patches show more. But all three live or die on the sub-base: most "surface failures" in Watford are groundwork failures underneath.
Clay: the quiet Watford consideration
Most of Watford sits on London clay, which moves seasonally. All three surfaces cope fine on a properly built sub-base; all three fail on a skimped one. Resin's bound, joint-free surface tolerates minor ground movement gracefully; block paving's joints need keeping sanded; tarmac wants a proper channel drain so water never sits against the slab edge. Gravel on a slope needs stabilisation grids.
Maintenance reality check
Resin: wash occasionally, nothing else. Tarmac: keep fuel spills off, little else. Block paving: kiln-dried sand in the joints, prompt weed removal, occasional re-sanding. None of it is onerous, but block paving is the only one that asks anything of you regularly.
| Factor | Resin bound | Block paving | Tarmac |
|---|---|---|---|
| Cost per m² | £65-£115 | £65-£115 (permeable £85-£130) | £40-£80 |
| Lifespan | 15-25 yrs | 20-30 yrs | 15-25 yrs |
| Permeable? | Yes, no planning needed | Only permeable systems | No, drainage or permission needed |
| Weeds & maintenance | Almost none | Joint sanding, occasional weeds | Almost none |
| Repairs | Patchable but visible | Lift & relay, invisible | Patchable, ages visibly |
| Look | Smooth, modern, seamless | Traditional, patterned | Plain (improved with block edging) |
| Watford period fit | Good in muted blends | Excellent in sett styles | Weakest on period streets |
| Install time (50m²) | 2-3 days | 3-5 days | 2-3 days |
| Watch out for | Non-UV resin yellowing | Skimped sub-base sinking | Unsupported edges crumbling |