If you've got a leaking roof in Farnborough, the worst thing you can do is ignore it and hope it dries out. It won't. Even a small amount of water getting in regularly will eventually rot your roof timbers, soak your insulation (which then loses all its effectiveness), stain your ceilings and walls, and create the perfect conditions for black mould. We've seen repair bills triple because homeowners left a leak for "just a few more months."
Roof leak repair starts with diagnosis — finding exactly where the water is entering your roof. This isn't always straightforward because water can travel significant distances along rafters, battens, and the underside of felt before it drips down into your living space. The damp patch on your ceiling might be directly below the leak, or it might be several metres away. We trace the path of the water back to its entry point by inspecting from inside the loft (where water trails are often visible on the felt or timbers) and from outside on the roof surface. Common leak points include deteriorated lead flashings around chimneys and abutments, cracked or missing tiles above valleys, failed sealant around vent pipes and soil stacks, worn skylight flashings, and splits in flat roof coverings where they meet pitched sections. For properties in Farnborough, where a town in north-east Hampshire known for its aviation heritage, with a range of Victorian properties, 1960s estates, and contemporary developments, we know the typical problem areas based on the age and style of the housing stock. Once we've identified the source, we carry out a targeted repair using quality materials — proper milled lead for flashings, matching tiles for replacements, and breathable membrane if the felt beneath has broken down. We don't believe in quick-fix sealant bodges that'll fail in six months. If a leak has been going on for a while and caused secondary damage — rotted battens, wet insulation, or stained ceilings — we'll let you know what else needs attention and give you options.
The lead flashings where your chimney meets the roof tiles are one of the most common leak points. Over time, the lead fatigues from thermal expansion and contraction, the mortar pointing in the brick chase cracks, and water finds its way behind the tiles. You might notice damp on the chimney breast wall inside or water stains on the ceiling near the chimney. This is always worth fixing promptly — chimney leaks can cause serious internal damage.
Valleys — the V-shaped channels where two roof slopes meet — handle a lot of water, and the lead or tile lining eventually wears through. Debris builds up in valleys too, creating mini dams that force water sideways under the tiles. A leaking valley often shows up as damp on a wall or ceiling some distance from the valley itself, which makes it harder to trace without going up on the roof.
Where plumbing vent pipes pass through the roof, there's a rubber or lead collar that seals the gap. UV exposure perishes the rubber over time, and lead collars can crack. These leaks are often slow and intermittent — worse in driving rain from a particular direction — and they can go unnoticed until the damage is significant.
Not every wet ceiling is a leak. Poor loft ventilation causes warm moist air to condense on cold surfaces — the underside of the felt, the roof timbers, even nail heads. This can drip down and mimic a leak perfectly. We see this a lot in Hampshire, especially in properties where loft insulation has been added without adequate ventilation. We'll check for this before recommending any roof work.
A simple roof leak in Farnborough where the source is easy to find and fix — say, a cracked tile directly above a valley or a small section of flashing that's come loose — typically costs £150-£400 to sort out. If the leak is coming from a chimney and the lead flashings need replacing, you're looking at £300-£800 depending on how much lead is involved. Valley repairs usually come in at £500-£1,200. More complex leaks that require stripping back tiles to access the felt and battens underneath can be £800-£2,000. If the leak has been going on for a long time and caused timber damage, the cost goes up accordingly — rotten battens need replacing before the tiles can go back on. We always give you a clear price after the initial inspection so you know what you're committing to.
For flashing repairs, we use milled lead sheet — code 4 for step and side flashings, code 5 for apron and back gutter work around chimneys. Lead is dressed and fixed to Lead Sheet Association standards. Where we're replacing tiles, we match existing types from our stock of Marley, Redland, and Sandtoft products. For valley repairs, options include lead-lined (traditional and long-lasting), GRP valley troughs (Tapco or Manthorpe), or in some cases tile valleys with purpose-made valley tiles. Failed vent boots are replaced with Dektite or similar EPDM pipe flashings that flex with thermal movement. If the felt beneath damaged tiles has perished, we strip back and replace with Tyvek Supro breathable membrane rather than old-style bitumen felt.
We start in the loft space of your Farnborough property, tracing water stains along the felt, timbers, and rafters back towards the point of entry. This often tells us more than looking at the outside of the roof, because you can see exactly where the water's been running.
Next we get up on the roof and inspect the area around the suspected entry point. We check tiles, flashings, valleys, vents, and mortar — anything that could be letting water through. We take photos so you can see what we're seeing.
Once we've found the source, we'll explain exactly what's going on and what it'll take to fix it. No jargon, no scare tactics. If the repair is simple, we can often do it there and then. If it's a bigger job, we'll give you a written quote.
We fix the actual cause of the leak — not just the visible symptom. Whether that means replacing lead flashings, swapping damaged tiles, re-lining a valley, or replacing a section of felt, we do it properly with materials that'll last.
After the repair, we check from inside the loft to make sure the path is sealed. We clean up all debris and leave your property tidy. If there's internal damage that needs attention — wet insulation, stained plaster — we'll advise you on that too.
Roof leaks across Farnborough follow patterns that relate directly to local housing and weather. Farnborough is a town in north-east Hampshire known for its aviation heritage, with a range of Victorian properties, 1960s estates, and contemporary developments. The prevailing wet weather from the south-west means that chimneys, valleys, and any detail on the western face of a roof tend to deteriorate faster. Properties from the 1930s-60s era, which make up a significant proportion of the housing stock in Hampshire, often have their original bitumen felt, which becomes brittle and cracks after decades — meaning even if the tiles above are fine, water can get past them and through the felt. Homes near mature trees also suffer from debris in valleys and gutters, which causes water to back up under tiles.
Finding the actual source of a leak — not just where the water ends up — takes experience. We've traced hundreds of leaks across Hampshire and we know the common culprits for every type and age of roof.
We don't do quick sealant bodges. When we repair a leak, we fix the underlying cause with proper materials so it doesn't come back six months later.
Active leaks need quick attention. We can usually get to your Hampshire property within a day or two to diagnose the problem, and carry out many repairs on the same visit.
Sometimes a leak just needs a simple tile swap. Sometimes it needs more. We'll always tell you the truth and let you make the decision — no pressure, no upselling.
We trace the water path from the inside first — checking the loft space for stains on the felt, wet timbers, and drip trails. Water travels, so the damp patch on your ceiling isn't always directly below the leak. Once we've got a good idea of the entry area, we inspect the corresponding section of roof from outside, checking tiles, flashings, valleys, and vents. Experience is key here — after years of leak work across Hampshire, we know where to look for every roof type.
Simple leak fixes start from around £150-£400. Chimney flashing repairs run £300-£800. Valley work is typically £500-£1,200. More complex repairs involving stripping back tiles and replacing felt or battens can be £800-£2,000. We always give you a fixed price after the inspection so there are no surprises.
Yes, absolutely. Even a slow drip does cumulative damage. Water soaks into roof timbers and causes rot. It saturates your loft insulation, which then stops insulating. It stains ceilings and walls. And damp conditions encourage black mould growth, which is a health risk. A leak that costs £200 to fix today could cause £2,000 of damage if left for a year.
Not necessarily. It could be condensation, which happens when warm moist air rises into a poorly ventilated loft and condenses on cold surfaces. It could also be a plumbing leak from pipework in the loft. We check for all possibilities before recommending roof work — there's no point replacing flashing if the real problem is a leaking pipe or inadequate ventilation.
Most leak repairs we do in Farnborough are completed in half a day to a full day. Finding the leak often takes longer than fixing it. Straightforward repairs like a tile replacement or small section of flashing can take a couple of hours. Bigger jobs involving valley work or extensive flashing replacement might take a day or two.
Always. Without exception. Water doesn't stop — it keeps coming in every time it rains, and each time it does more damage. Timbers get softer, felt deteriorates further, and eventually what started as a £200 repair becomes a £2,000 repair. Don't put it off.
Yes. A leak that only shows up in heavy or wind-driven rain usually means the entry point is small but real. It might be a hairline crack in a tile or a tiny gap where flashing has pulled from the brickwork. It's still letting water in, still causing damage in your roof space, and it'll get worse over time as the gap opens up. Better to fix it now while it's a small job.
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