Lead Work in Waterbeach

Expert Lead Work
in Waterbeach

What lead work covers

Lead is the standard material for sealing the junctions where a roof meets a vertical surface: chimneys, dormers, bay windows, flat roof abutments and valleys between two pitched slopes. When correctly fitted and hand-dressed to BS EN 12588 standard, it is one of the most durable waterproofing solutions available for these positions. When it fails, water enters quickly, because these junctions are exactly where rain is most readily driven in by wind.

All our lead work is dressed by hand on site. We shape each section to the specific profile of your roof, work in lengths that allow for thermal movement, and fix and point the flashings correctly so they remain watertight over the long term.

How to tell if your lead work has failed

The most obvious sign is a water stain on a ceiling below a chimney stack, dormer or flat roof edge. But the source of a roof leak is not always directly above where the water appears indoors, because it can travel along a rafter or ceiling joist before dripping. Other signs to look for from ground level include a section of flashing that has visibly lifted away from the wall, lead that appears buckled or split, or heavy white staining running down brickwork below a chimney, which suggests water has been tracking behind the flashing for some time.

If you can safely access your loft space, check the underside of the roof deck in the area above where the water is appearing. Damp or stained felt or boarding confirms the leak is active rather than historical.

What to do while you wait for a roofer

If you have an active lead work leak and cannot get a roofer out immediately, there are practical steps you can take to limit the damage. These are about protecting your home, not about fixing the roof itself.

• Contain the water indoors. Place a container under any active drip and protect flooring and furniture with plastic sheeting or old towels. If water is running down a wall, tacking a strip of plastic sheeting to direct it into a container is better than letting it soak into plaster.
• Check and clear your loft space. If water is pooling on loft boards, move anything stored there out of the way. Saturated insulation loses most of its effectiveness and takes a long time to dry out, so if insulation has been soaked, keep a note of how extensive the wet area is when you speak to the roofer.
• Protect the ceiling below. If a ceiling is bulging or bowing, water has pooled above it. A bulging ceiling can come down suddenly. If the bulge looks significant, it is safer to make a small hole in the lowest point deliberately, with a container positioned underneath, than to let it build up until the ceiling collapses. Use something narrow, like a screwdriver, and stand to one side.
• Document what you see. Take photographs of the water entry point, any visible damage to the lead from the ground, the loft interior, and any internal damage. This is useful information for the roofer and for any insurance claim you may need to make.
• Note when it leaks. Does water appear only during heavy rain, or after rain has stopped, or during both? Does it seem worse with wind from a particular direction? This kind of detail helps a roofer narrow down the source when they inspect.

What not to do yourself

When a roof is leaking, the instinct to do something about it immediately is understandable. But several of the most common DIY responses to a lead work failure either do not work, make the eventual repair harder, or create a new safety risk. These are the things to avoid.

Do not apply sealant or mastic to the lead

Sealant and mastic compounds do not bond reliably to lead, which has a naturally oily surface. Even products sold as suitable for use on lead rarely produce a lasting bond, particularly where the lead has already begun to move. The sealant may hold for a few weeks or months, but it will then peel or crack, and when the roofer comes to do the proper repair they will need to remove the sealant first, which adds time and cost. Worse, sealant can hide the true extent of the problem, meaning a roofer may initially quote for less work than is actually needed.

Do not use self-adhesive flashing tape as a permanent fix

Butyl or aluminium self-adhesive flashing tape is sold in DIY stores and is sometimes used as a temporary repair. It can hold for a short period if the surface is clean and dry when it is applied. However, it is not a substitute for properly dressed lead, it will not follow complex roof profiles reliably, and the adhesive degrades with UV exposure and thermal cycling. On a chimney stack or in a valley, it is unlikely to last a winter. On a flat roof abutment it may give a slightly longer result, but it will still need to be stripped before a proper repair is done.

Do not try to re-dress or hammer the lead back down yourself

Lead that has lifted or cracked can look as though it just needs pressing back into place. But hammering or pressing lead that has already cracked or work-hardened will make the crack worse, not better. Lead needs to be worked with the right tools, at the right temperature, and by someone who knows how much force to use. It is also easy to damage the tile or slate bedding around a flashing while working without experience. Leave the lead itself alone.

Do not go onto the roof without appropriate access equipment

This is worth saying plainly. A roof is a dangerous place without the right equipment and experience. Most lead work is around chimneys and parapets, which means working at or near the ridge of the roof. A fall from that height is serious. Leaning out of a dormer window or balancing on window sills to get a closer look is not a substitute for a roofer with proper access. Wait for the professional.

What to tell the roofer when they arrive

The more useful information you can give at the start, the faster and more accurately a roofer can identify the problem. Tell them when the leak first appeared, whether it has got worse or stayed the same, what weather conditions seem to bring it on, and anything you noticed from the loft or on the exterior from ground level. If you applied any sealant or tape, mention it even if it is embarrassing; the roofer needs to know what they are dealing with before they start.

A good roofer will inspect the full area of lead work, not just the most obvious failure point, because lead that has failed in one place is often under stress elsewhere. Ask them to explain what they find and what the options are before any work begins.

Costs and what to expect

A chimney flashing repair in and around Waterbeach typically costs in the range of £150 to £500 depending on the extent of the failure and whether scaffolding or a tower is required for safe access. A full re-lead of a chimney stack with step flashings, back gutter and front apron is typically in the range of £600 to £1,200. Valley lining replacement costs vary by length and lead code but a typical domestic valley is often in the range of £400 to £900. These are indicative figures based on typical UK pricing and your job may differ depending on the specifics.

Arrange a lead work inspection in Waterbeach

If you have a suspected or confirmed lead work failure, call Newmarket Roofers to arrange a survey. We will inspect the roof, explain what we find, and give you a clear written quote before any work starts. Do not leave a lead failure over winter if you can help it; frost and sustained rain will cause damage to timbers and ceilings that is more expensive to deal with than the lead work itself.