Should You Repair or Replace Your Roof?

The Repair vs Replace Decision for Nottingham Roofs

The 30% Rule of Thumb

If less than 30 percent of the roof is affected, repair is usually the right answer. If more than 30-40 percent is failing, the cost of repairing tile by tile approaches the cost of full replacement but leaves you with old battens, old underlay, and old fixings on the unrepaired sections. At this threshold, replacement delivers better value per year of remaining roof life.

The Cost-Per-Remaining-Year Test

A £500 repair that buys 5 years costs £100 per year. A £6,000 replacement that lasts 50 years costs £120 per year. The numbers are close but the replacement eliminates emergency risk and maintenance hassle for decades. A £3,000 series of repairs on a roof that needs replacing within 10 years costs £300 per year and never solves the problem. Run the numbers for your specific situation.

When Replacement Is Oversell

If your roof has an isolated leak from a cracked flashing, a slipped tile, or a blocked valley, replacing the entire roof is oversell. A £200-£500 repair fixes the problem permanently. If a roofer tells you a 15-year-old roof needs full replacement because of one leak, get a second opinion. Honest roofers recommend the minimum intervention that solves the problem.

When Patching Is Money Wasted

If your roof has widespread nail sickness across the Clifton, Bilborough or Bestwood estates, patching individual tiles is treating symptoms while the disease progresses. Every tile on the roof has the same corroded nails. Fixing five tiles this year means ten more next year and twenty the year after. The only permanent solution is a full strip and re-tile with stainless steel fixings.

Stock-Era Guide for Nottingham

Victorian slate (Sherwood, Mapperley, Hyson Green): the slates last 150+ years but the iron nails corrode after 80-120 years. If the slates are sound and only the fixings have failed, a strip-and-relay saves the original covering at 70-85 percent of re-slate cost. 1930s clay (West Bridgford, Beeston): tiles last 80-100 years, check battens and felt. 1950s-70s concrete (Clifton, Bilborough, Arnold, Bestwood): 50-60 year design life, nail sickness is the trigger for replacement. Modern post-2000: should not need replacement for decades.

Your Protection

10-year written workmanship guarantee on all work. Materials carry separate manufacturer warranties of 15-30 years depending on the product. NFRC registered with £5 million public liability insurance. The guarantee is dated, written, and transferable if you sell the property. If a fault appears in covered work during the guarantee period, we come back and put it right at no cost.