Plumbers and Heating Engineers in South Croydon

South Croydon is essentially a railway suburb. The land here lay in the old manors of Croham and Haling, and it stayed largely rural until South Croydon station opened on the Brighton main line in 1865. After that the fields went under brick quickly. Speculative builders ran terraces and semi-detached villas out along Brighton Road, Selsdon Road, Coombe Road and Pampisford Road for clerks and merchants commuting into London, and the churches followed the houses: St Peter's was dedicated in 1851, St Augustine's went up in 1884 and Emmanuel Church opened in 1897. That gives a reliable rule of thumb. Close to the station or South End, the houses are usually late Victorian. Climbing east towards Croham Hurst, they are more likely Edwardian villas or planned inter-war streets, and Croham Manor Road itself is an early twentieth century set piece.

The Victorian terraces are the bulk of the work. They were built with no internal plumbing to speak of, so almost everything you find in one now was retrofitted, often more than once. The typical layout is two storeys with a back addition, and the kitchen and bathroom nearly always ended up in that back addition. That produces the single most common fault we attend in these streets: a long horizontal waste run from a sink or bath, laid at too shallow a fall by whoever fitted the kitchen, taking a sharp turn into the soil stack on the rear wall. Grease and fat build at the bend, the sink drains slowly for a few months, and then it stops. Clearing it is straightforward, but re-laying that run at a proper fall is the fix that lasts.

Water supply in the older stock needs checking before anyone promises you anything. Lead was the standard supply pipe material until roughly 1970, and a large share of South Croydon's terraced and villa stock predates that by fifty years or more. If the pipe rising through your kitchen floor or front hall is dull grey, soft enough to mark with a coin, and swells into a bulbous soldered joint at the stop tap, that is lead. Old lead and old half-inch iron both throttle flow as well as raising a health question. In terraces the internal stopcock is usually under the kitchen sink or just inside the front door, and the external stop tap and meter sit in a small cover in the footway. In these streets that cover has frequently been paved or tarmacked over during a driveway job, and finding it again is the first ten minutes of any emergency.

Heating in the terraces is a patchwork. Most of these houses were first centrally heated in the 1970s and 1980s with an open-vented system: cold tank in the loft, feed and expansion tank beside it, cylinder in an airing cupboard on the landing. Some of that era was piped in eight or ten millimetre microbore, which is fine until it silts with magnetite and the radiators furthest from the boiler go cold at the bottom. Converting to a combi frees the loft and the airing cupboard, which is genuinely valuable in a narrow terrace, but it moves the whole house onto incoming mains pressure. That is precisely when a lead or undersized supply pipe stops being a background concern and becomes the thing that decides which boiler you can have. We measure flow rate at the kitchen tap before quoting a combi, never after. If the reading is poor, the honest answer is either a smaller combi, an upgrade of the supply pipe to 25mm plastic, or a system boiler with an unvented cylinder instead.

The larger villas are a different job. Off Croham Road, around Haling Park and Haling Grove, and on the streets running up from Pampisford Road, you get three storey houses with basements or semi-basements. The vertical distance from a loft tank to a second floor shower is short, so the head is poor and the shower is weak no matter how good the mixer is. On a house like that a combi is rarely the right answer, because several bathrooms get run at once. A system boiler feeding a properly sized unvented cylinder, sited in the basement or a ground floor store, is usually the sensible layout. It needs a G3 qualified engineer to install and an annual check on the expansion vessel and discharge arrangement.

Many of those same villas were split into flats decades ago, and conversions are a large part of what we attend in CR2. A converted villa typically has one soil stack serving every flat, one incoming cold main with a single stopcock that may be in a communal cupboard or inside the ground floor flat, and a gas supply that was extended upward when the split happened. Three things follow from that. First, a blockage low in the stack shows up as a backing-up ground floor bath while the top flat notices nothing, so diagnosis has to start at the bottom of the building. Second, an upstairs leak in a converted house travels sideways along a joist before it appears, and the wet ceiling is often not below the failed joint. Third, flue siting in a conversion is genuinely constrained. A flue must terminate a set distance from openings, boundaries and anything above or below it, and in a building carved into flats the neighbouring window is frequently within that distance. We check flue routes on site before quoting a boiler in a conversion, because the position of the boiler may have to change.

Above the shops and restaurants on South End the pattern is different again. Commercial ground floors with flats over them share their drainage, and grease from the kitchens below is the usual cause of slow drainage upstairs. Clearing the domestic branch will not help if the shared run underneath is coated.

On the inter-war streets near Croham Hurst life is easier. Bay-fronted semis of that period have wide side returns, so a boiler can usually go in the kitchen with a short horizontal flue through the side wall, and chimney breasts are often intact and useful for routing. The mixed streets are the ones to be careful on, because a terrace that has been re-piped twice can contain lead, iron, copper and plastic in the same run, and joints between dissimilar materials are where slow weeping leaks start.