Driveway drainage & surface water in Macclesfield
Water is what kills driveways and it is what the rules are actually about. Standing water softens a sub-base, gets into cracks and freezes, washes fines out of joints and undermines edges. A drive with good drainage and an average surface will outlive a drive with a beautiful surface and nowhere for the rain to go, every single time.
The legal position is straightforward once someone says it out loud. Surface water must not be connected into a foul sewer. Part H of the Building Regulations sets out the order of preference — infiltration into the ground first, then a watercourse, and a surface-water sewer last and only with the water company's agreement. And since October 2008 an impermeable surface over five square metres in a front garden has needed planning permission unless it drains to a permeable area inside your own boundary.
That last rule has a genuine local edge to it. Cheshire East's Preliminary Flood Risk Assessment names Macclesfield as the borough's ONLY designated Flood Risk Area, with 47 internal flooding incidents recorded since 2011 — the highest of any town in the borough — and attributes part of that to an ageing network of unmapped, culverted watercourses running under the town. Every front garden that gets paved impermeably adds to what that system has to carry.
The practical answers are unglamorous and mostly cheap if they go in with the drive rather than after it. A linear channel across the threshold where a drive falls towards the house or the garage. Falls set away from the building rather than towards it. A soakaway sized for the area and sited far enough from foundations. Or simply choosing a permeable build-up in the first place, which sidesteps most of it.
Drainage & surface water — every job, in detail.
5 jobs in this category. Each has its own page explaining what's involved, what your contractor checks and — just as importantly — when a job can safely wait.
Driveway drainage
Getting the rain off a driveway and legally away from it — falls, channels, gullies, soakaways and permeable build-ups. It is the part of the job that decides how long the drive lasts, and in a front garden it is also what decides whether you need planning permission.
Read more →Channel drains & threshold drainage
A linear channel set across a threshold or at the low point of a drive, catching run-off before it reaches a garage, a doorway or the pavement. Simple, effective and cheap when it goes in with the drive — considerably less so when it is cut in afterwards.
Read more →Soakaways
A soakaway takes collected surface water and lets it infiltrate into the ground rather than discharging it to a sewer or the road. Sized for the area draining to it, sited well clear of foundations, and only worth building where the ground will actually accept water — which is a test, not an assumption.
Read more →Flooding & standing water
Drives that pond, flood or send water into a garage — diagnosed properly, because the cause is one of a small number of things and they have different answers. Levels, a blocked outfall, an undersized system or ground that simply cannot take any more.
Read more →Gully & manhole repairs
Cracked gullies, sunken or rocking covers, failed chamber surrounds and manholes that were never built to be parked on — rebuilt properly, with a cover rated for the traffic. It is a small job that prevents a large one, because a failing chamber washes the base out around it.
Read more →Not sure which one you need?
Describe it in your own words on the quote form. Your contractor will work out what the job actually is when they ring you back — usually the same day.
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