Is Block Paving Permeable?
Updated: Oct 9
Only if it is a permeable block system: sometimes, but not automatically. Some block paving systems are designed to let water drain through, while many standard block paved driveways rely on falls, channels, and separate drainage rather than permeability through the surface itself.
The Short Answer: Some Block Paving Is Permeable, Some Is Not
Permeable block paving does exist. Planning Portal lists permeable concrete block paving as one example of a porous surface that allows water to drain through. But that does not mean every block paved driveway is permeable by default. True permeable paving is built differently from conventional paving, with water passing through the joints and into a free-draining sub-base below.
That difference matters. A driveway can look similar from above while performing very differently in wet weather. In practical terms, it is not just the blocks that count. The full system matters, including the jointing, the bedding layer, and the sub-base underneath.
Why Permeability Matters for Homeowners
For most homeowners, permeability becomes important for three reasons: drainage, puddles, and planning rules. A permeable surface helps water soak away rather than rushing across the driveway and into drains. Government guidance on front gardens explains that permeable surfaces, soakaways, and rain gardens are all part of reducing rainfall runoff.
It can also matter when planning a new front driveway. Planning Portal states that a new or replacement driveway of any size generally does not need planning permission if it uses a permeable or porous surface, or if rainwater is directed to a lawn or border to drain naturally. In England, if more than 5m² of front garden is covered with a traditional impermeable surface and the water cannot drain to a permeable area, planning permission is usually needed.
What We Recommend Instead of Block Paving
We do not install block paving, so when a homeowner asks about permeable options, we focus on the alternatives we know perform well and that we install ourselves.
Resin Bound Driveways
If permeability is the top priority, the resin drives we lay are usually the strongest option from our range. Resin bound is natural aggregate mixed with clear resin and trowelled into a smooth, durable surface that water drains straight through. Laid on a permeable base, it is SuDS compliant, so the water soaks away naturally instead of puddling.
For homeowners, that usually means a driveway that feels modern, neat, and easy to live with. Resin bound also suits people who want a more premium finish without the segmented look of traditional block paving. If the goal is a clean appearance with built-in drainage, this is normally the first option we discuss.
Porous Asphalt
If the look of resin is not quite right and the preference is for something simpler and more understated, porous asphalt is a permeable alternative worth asking about. Planning Portal includes porous asphalt among the porous surfaces that can allow water to drain through. Standard tarmac is generally not permeable; porous asphalt is a different, open-graded mix laid over a free-draining base.
This can be a good fit for homeowners who want a practical, darker, more traditional driveway finish but still need permeability to be part of the specification. The important point is to be clear whether the system being quoted is standard tarmac or a porous asphalt build-up, because they are not the same thing.
Standard Tarmac with Proper Drainage
Not every good driveway has to be permeable through the surface itself. In some cases, a standard tarmac driveway is still the right choice, especially where strength, simplicity, and value matter most. It is strong, durable, cost-effective and stands up well to the weather on driveways, paths, and parking areas.
The key is to be clear about what it is. Standard tarmac is usually not permeable, so the drainage needs to be designed properly through falls, channels, or runoff to a suitable permeable area. There is a difference between a surface that is truly permeable and one that is simply SuDS-friendly because it directs water to a soakaway or similar drainage feature.
Pattern Imprinted Concrete
For homeowners focused on visual impact, pattern imprinted concrete driveways are another option we offer. It can replicate the look of stone, slate, brick, or cobbles and create a bold decorative finish. But pattern imprinted concrete is sealed and non-permeable, so surface water needs to be taken to the sides or into installed channels.
That means it is a good choice when appearance and design flexibility matter more than permeability. If water management is the main concern, resin bound is usually the better fit from our range.
Which Driveway Type Makes the Most Sense?
In our view, the best choice depends on what matters most to the homeowner.
If the priority is permeability and easy drainage, resin bound is usually the strongest all-round answer from the options we install. If the priority is strength and cost-effectiveness, tarmac is often the better fit, provided the drainage is designed correctly. If the priority is a decorative patterned finish, pattern imprinted concrete can work very well, but it should not be chosen on the assumption that it is permeable.
This is why we always think it is better to start with the outcome you want rather than the material name alone. A lot of homeowners begin by asking for block paving when what they really want is one of three things: a tidy premium look, low maintenance, or better drainage. Once that is clear, the best surface usually becomes much easier to identify.
Choosing a permeable driveway
So, is block paving permeable? It can be, but not all block paving is. What matters most is whether the whole driveway system is designed to handle water properly. That includes the surface, the base, and the drainage plan.
Want the look without the upkeep? To be plain about it, Drive Tech does not lay block paving, permeable or otherwise. What we do lay across Wolverhampton, the West Midlands and Staffordshire is resin bound on a permeable base when drainage comes first, tarmac driveways when cost and strength matter most, and pattern imprinted concrete for a decorative finish, with the drainage designed in. Our comparison of the best driveway material for UK homes sets all of them side by side, block paving included.
