Roof Survey in Glasgow

Glasgow has one of the densest concentrations of Victorian and Edwardian slate roofing in the UK. The city's tenement rows, built in their thousands from the 1880s onwards, were roofed almost universally with Ballachulish slate - a material quarried in Highland Scotland and prized for its durability and near-waterproof qualities. A well-maintained Ballachulish slate roof can last 100 years or more, but most Glasgow tenements are now approaching or past that lifespan.

Slipped slates, cracked ridges, and failed lead flashings are the most common defects our inspectors find in Glasgow's tenement stock. Access is a challenge - many tenements are three or four storeys tall with no ladder access from the street - which is why our surveys use high-level inspection methods where required. We note every defect we identify and grade it by urgency so the report is usable for budgeting repairs or negotiating on a purchase price.

Glasgow's later housing stock, built from the 1930s through to the 1970s, uses clay or concrete tiles rather than slate. These properties occupy the city's peripheral housing schemes and south-side suburbs, and carry a different set of defect patterns: lifted tiles, failed mortar bedding at ridges and hips, and deteriorating felt underlays that have reached the end of their service life. On some post-war council estates, non-traditional construction methods introduced roof structures that require specialist knowledge to assess accurately.

The city's newer properties - particularly in the regeneration zones around the East End and Sighthill - use modern tiles or low-pitch systems more common on contemporary builds. Each of these roof types calls for a different inspection approach, and our inspectors are trained across all of them.

Glasgow sits at 55.8 degrees north and records over 1,200mm of rainfall per year across most of the city. That volume of water, combined with freeze-thaw cycles that affect exposed masonry and roof coverings through winter, creates conditions that accelerate roof deterioration significantly faster than in southern English cities. Properties on elevated ground - such as parts of Drumchapel (G15) and Castlemilk (G45) - face additional wind exposure.

Moss and algae accumulate quickly on north-facing roof slopes in Glasgow, particularly on clay and concrete tiles where the surface texture gives organisms a grip. A thick moss covering traps moisture against tile surfaces, accelerating surface erosion and lifting tiles by forcing between fixing lugs. On older slate roofs, the same moisture retention contributes to nail sickness - the gradual oxidation of the iron nails used to fix slates to the batten, causing slates to work loose and slide down the roof.

Blocked gutters are a persistent problem across all property types in Glasgow. Autumn leaf fall, combined with moss washed down from roof surfaces during heavy rain, clogs gutters and downpipes quickly. When gutters overflow, water runs down the face of sandstone walls, penetrating mortar joints and eventually reaching internal wall cavities. Our inspectors check gutter condition, outlet positions, and fall direction as a standard part of every Glasgow survey.

Periodic Atlantic gales are a seasonal feature of Glasgow winters. These events dislodge loose ridge tiles and slates, damage flashing edges, and - on flat roofs - peel back membrane edges at parapet junctions. Properties that have had roof work in recent years are not immune. Poorly fixed replacement slates or improperly secured flashing can fail under wind loads that the original Victorian workmanship withstood for decades.

Our Glasgow roof surveys are visual inspections carried out from the ground and from close access points where safely achievable. The standard report covers seven areas of the roof and its associated drainage.

• Roof covering condition - We examine the full extent of slates, tiles, or membrane covering, identifying any slipped, cracked, or missing units and assessing the general wear level across the roof surface.
• Ridge and hip coverings - These mortar-bedded zones are a common failure point on Glasgow roofs. We report on mortar integrity, loose ridge tiles, and hip tile alignment across the full length of the ridge.
• Flashings and soakers - Lead flashings at abutments, chimney stacks, and parapet walls are assessed for splits, open joints, and sections where lead has been patched with inappropriate sealants or mastic compounds.
• Chimney stacks - Glasgow properties frequently carry multiple chimney stacks, some capped, some still in use. We inspect brickwork pointing, capping condition, pot fixings, and flaunching mortar across each stack visible from the inspection position.
• Gutters and rainwater goods - Overflow points, joint integrity, bracket fixings, and outlet blockages are all noted. We check both cast iron and uPVC systems, which appear in roughly equal measure across the city's housing stock.
• Roof lights and dormers - Where present, these are inspected for glazing seal integrity, kerb flashing condition, and frame deterioration.
• Flat roof sections - Where properties include flat roof extensions or outriggers, these are assessed for surface condition, drainage fall, and edge detail integrity.

Every report includes photographic evidence for each defect noted, with recommendations split into urgent repairs needed within three months, works recommended within one year, and items to monitor at the next inspection. This structure makes the report usable both for maintenance planning and for price negotiations on a property purchase.

Glasgow's new-build market has grown after several quiet years. The Keepmoat NorthBridge development at Sighthill (G21) is one of the largest regeneration projects in Scotland, re-connecting with the city centre via the new Sighthill Bridge and offering homes from two-bedroom apartments at £254,995 through to five-bedroom family homes at £479,995. Richmond Heights at Oatlands (G5) offers two-bedroom apartments approximately three miles from the city centre. Taylor Wimpey's Duncarnock development near Balgray Reservoir (G53) provides two to five bedroom family homes on the city's south-western fringe.

New-build roofs in Glasgow carry their own defect profile. Fixing battens, tile overlaps, and flashing details can vary significantly between subcontractors on the same site, and quality control during the construction phase is not always consistent. Roof coverings on new builds are covered by the developer's two-year defect warranty, but identifying and recording defects before that period expires requires a thorough inspection - not just a visual check from the ground.

Our snagging surveys include roof inspection as a standard component. We recommend booking before the developer's two-year defect liability period ends, and well in advance of any structural warranty expiry. On some Glasgow new-build sites, roof defects identified during our surveys have included inadequate tile fixing at hip ends, insufficient lead soaker lengths at dormers, and parapet coping stones bedded without movement joints.