RICS Level 3 Building Survey Aber Valley

Across Aber Valley, including Abertridwr, Senghenydd and the surrounding neighbourhoods, older housing makes up a significant share of the stock. Many of these homes were built between 1890 and 1940, so plenty are now approaching, or already beyond, 100 years old. They tend to be period properties with solid walls in local brick or stone, original timber roof structures with slate coverings, and traditional suspended timber floors. That gives them plenty of character, but it also brings maintenance issues that only a proper survey will uncover.

We regularly come across problems linked to the geology beneath this part of South Wales. The Carboniferous ground, with coal measures and clay-rich soils, can lead to movement. Clay shrink-swell behaviour shows up when moisture levels change, because the soil expands and contracts. In Aber Valley, where clay soils are widespread, that matters. Add in the mining legacy, and homes here may show structural movement that a thorough Level 3 Survey would pick up. Our surveyors look for diagonal cracking around door and window frames, doors that stick or will not close properly, and floors that have become uneven over decades.

Homes near the River Aber need a different kind of attention. This tributary of the River Rhymney runs through the valley, and low-lying properties may have a history of flooding or water damage. During an inspection, our surveyors look closely at drainage, external ground levels and any signs of previous flood damage. We check gutters and downpipes for capacity and condition, see how water runs across the site, and note evidence of damp penetration in ground floor rooms. Properties on the valley floor, or those with gardens sloping towards the house, deserve particular care.

• Victorian and Edwardian period properties
• Properties with solid wall construction
• Properties in mining areas
• Properties near watercourses
• Pre-1900 terraced houses
• Semi-detached period homes

When we inspect homes across Aber Valley, Senghenydd and Abertridwr, we often see the same defects appearing again and again. Knowing that helps set expectations for the report. Rising damp is one of the most common problems in period properties with solid walls. Unlike modern cavity wall construction, which includes a damp proof course, many older homes in this area were built without proper damp protection. Ground moisture can rise through brickwork and stonework by capillary action, leaving damp patches on ground floor walls, damaged plasterwork, and peeling paint or wallpaper. Our surveyors use moisture meters to judge the extent of damp penetration and to see whether the damp proof course is working or has failed.

Penetrating damp is just as common, especially where original lime-based mortar pointing has broken down over time. Once the mortar between bricks or stones washes out or cracks, rain can work its way into the wall. West-facing walls are often hit hardest by the prevailing winds and rain in this part of Wales. Our surveyors inspect external walls carefully, noting areas where pointing is missing, cracked or recessed, and checking for internal damp patches that may follow. Rendered properties need particular care, because render can conceal wall defects until it gives way.

Another major issue is timber decay. In Aber Valley properties, original timber floor joists in Victorian and Edwardian houses are often close to, or beyond, their expected lifespan. We inspect accessible floor voids for rot, woodworm infestation and any sign of structural weakness. Window frames, door frames and original skirting boards are equally exposed, especially where paintwork has failed or water has come in from outside. In the roof space, we check rafters, purlins and any strutting for rot, insect damage or overloading from current or former roof coverings.

Electrical and plumbing systems in period homes often fall short of modern standards. Many Aber Valley properties still have wiring from the early 20th century, even where parts have been updated without a full rewire. Our surveyors record the condition of visible electrical fixtures and plumbing, and recommend that a qualified electrician and plumber inspect both systems in detail before purchase. That matters even more where insurance could be affected by outdated electrics.

Properties in Aber Valley bring a set of challenges that our surveyors know well. The Carboniferous geology below the area means clay soils are common, and those soils are prone to shrink-swell movement. During summer months or periods of drought, the clay contracts and foundations may settle unevenly. In wet periods, the same ground expands and can push foundations upwards. That repeated movement can show itself as cracking in walls, especially around window and door openings, and our surveyors are trained to spot both active and historic patterns. We look closely at the crack pattern, the width and whether it appears recent or long-established.

The valley’s mining history adds another layer. Although deep coal mining here mostly ended decades ago, the legacy remains in the ground. Mine shafts, tunnels and collapsed seams can all affect stability. Not every property will be touched by this, but homes in former mining areas can suffer gradual subsidence or sudden ground collapse. Our surveyors know what to look for, including cracking patterns that differ from typical settlement cracks, and we will recommend further investigation where needed. The Coal Authority keeps records of past mining activity, and we can advise on getting the relevant mining report for the property.

Many Aber Valley homes were built with solid brick or stone walls rather than cavity construction. These walls are durable, but their thermal and moisture behaviour differs from modern cavity walls. Our survey reports explain how these construction methods affect performance, including the risk of damp penetration and heat loss. We also give practical guidance on improving comfort and efficiency in period homes without spoiling their character. For example, we can advise on suitable internal wall insulation systems that let the walls breathe while improving energy efficiency.

• Coal mining subsidence assessment
• Clay shrink-swell foundation movement
• River Aber flood risk evaluation
• Solid wall construction analysis
• Original timber roof condition
• Historic render and pointing condition