Roof Repairs in Sawston

Expert Roof Repairs
in Sawston

What we cover under roof repairs in Sawston

Roof repairs cover a wide range of individual faults: broken or slipped tiles, mortar failure on ridge and hip tiles, lead flashings that have lifted or cracked at the joint, felt or EPDM flat roof sections that have split or pulled away from an upstand, and damaged or blocked guttering that is forcing water back under the eaves. Each of these can be repaired on its own if the rest of the roof is sound. The key question - and the one this page is aimed at helping you answer - is whether a repair is the right call, or whether the condition of your roof makes a full replacement the more sensible investment.

The core question: repair or replace?

Deciding between a repair and a full re-roof is not always obvious, and it is made harder by the fact that different contractors sometimes reach different conclusions - occasionally for reasons that have more to do with the size of the job than the condition of the roof. Here is a straightforward way to think through it.

A repair makes sense when the fault is isolated and the structure and covering around it are still in reasonable condition. One section of failed flashing, a handful of slipped tiles caused by a corroded nail, a split felt lap on a small flat roof - these are all jobs where a targeted repair will restore weathertightness without touching the rest of the roof. Repairs in this category typically cost £150-£800 depending on access and the extent of the work.

Replacement starts to make more sense when the fault is a symptom of general deterioration rather than an isolated event. Nail fatigue, where the iron fixing nails have corroded throughout the roof, tends to cause widespread tile movement across a whole slope at once. If you are having the same section re-fixed every couple of years, the repair cost is accumulating toward re-roofing cost without the lasting result. At some point, replacing the covering and re-battening on new treated timber becomes the better use of money.

Signs that repair is the right answer

• The fault can be traced to one clear cause - a single broken tile, a cracked mortar bed, a failed flashing joint.
• The tiles or slates surrounding the fault are sitting flat, are not rocking, and the mortar on the ridge looks intact.
• The roof is not old enough to have widespread nail fatigue - on most properties this becomes a concern after 50-60 years for iron nails.
• The internal timbers (rafters and battens) are dry and sound - no blackening, no wet rot, no movement when pressed.
• A previous repair in a similar area has held well for several years.

Signs that replacement deserves serious consideration

• Multiple tiles or slates are slipping across different areas of the same slope, not just one patch.
• The felt underlay beneath the tiles is visible through gaps and is clearly split or decayed - this means the roof has lost its secondary defence against water ingress.
• Moss and lichen growth is heavy and the tiles beneath are spalling or laminating - porous, frost-damaged tiles will not hold a repair.
• The battens are rotten in more than one place - this is often discovered when lifting tiles to repair a section, and rotten battens cannot hold new fixings reliably.
• The roof has had repeated repairs in the last five to ten years without lasting improvement.
• The flat roof covering is more than 15-20 years old and has had multiple patches - at this stage the covering itself has reached the end of its useful life.

What a proper assessment looks like

A contractor should go onto the roof to assess it properly, not quote from the ground or from photographs taken from a ladder. From roof level they can check the condition of the tiles or slates, press the ridge mortar to test its bond, look at the underlay through any gaps, and check the batten ends at the eaves where rot often starts first. They should be able to tell you clearly what they found and show you photographs.

If a contractor tells you the whole roof needs replacing without going up, ask them to justify that from evidence. Equally, if they are proposing a repair and you are not confident about the overall condition, it is reasonable to ask them to check the surrounding area while they are up there and report back before you commit.

Typical costs - repairs versus re-roofing

To help you judge what you are being told, here are honest typical UK figures. A localised tile repair with access costs around £150-£300. A flashing replacement at a chimney is typically £400-£800. Re-bedding and re-pointing a full ridge run on a semi-detached is usually £600-£1,200. A full re-roof on a standard three-bedroom semi, stripping the old covering, replacing battens where needed and re-tiling, typically runs from £5,000-£9,000 depending on the pitch, tile type and access required. Flat roof replacement - felt or EPDM - on a typical garage or extension is usually £800-£2,500 depending on size and system.

These are indicative ranges. The only accurate price is one based on someone who has looked at your specific roof.

Flat roofs: repair or recover?

On flat roofs the decision follows a similar logic. A split along a felt lap or a localised bubble can be patched if the surrounding felt is still pliable and well-bonded. Once the felt has become brittle, is lifting at the edges or has had more than a couple of patches in the same area, recovering is the better option. EPDM rubber membranes have a longer service life than traditional felt and tend to hold up better at joints and edges. If you are recovering a felt flat roof, it is worth asking whether EPDM is a better choice for your situation.

Emergency repairs in Sawston

An active leak needs to be stabilised quickly - water reaching ceiling timbers or insulation creates secondary damage that adds cost and disruption. When choosing a roofer for emergency work, look for one who can attend promptly and carry out a temporary repair to protect the interior while a fuller assessment takes place.

Areas we cover from Sawston

Our work covers Sawston and the wider area including Newmarket, Moulton, Kentford, Fordham, Exning, Cheveley and Bury St Edmunds. If you are in a neighbouring village, call us and we will confirm we can reach you.

Get a roof survey in Sawston

If you are unsure whether your roof needs a repair or a full replacement, a proper survey from roof level will give you clear information to make that call. Contact Newmarket Roofers to book a roof survey in Sawston and get a written summary of what was found and what your options are.