How do we repair your roof?
From slipped slates to sagging roofs, we will explain how to fix your roofing problems.
Ailing roofs need not spell disaster for a renovation project. From slipped slates to sagging roof slopes, we explain what to look out for and what is involved in fixing common roofing problems.
It’s common to find roof defects flagged up in Home Buyer reports and building surveys, which have a unique capacity to evoke dread. Even straightforward repairs that involve working at height can induce bouts of financial vertigo, brought about largely by the substantial sums to pay for scaffold hire.
Fortunately, the need for complete re-roofing is comparatively rare. There are, however, potentially serious issues that routinely crop up in surveys, most of which require urgent attention to prevent leakage causing deterioration to the structure. Here, we explain what to look out for, the repairs required, and the potential costs* involved.
*All figures are provided as a rough guide, and will vary depending on location.
Defective Pointing to Ridge Tiles , Hip, Broken Tiles and Verges.
Defective pointing can be identified by:
Gaps and loose mortar at the joints between Ridge Tiles (which run along the top of the roof), hip tiles that cap the ‘corners’ on hipped roofs, or to a verge of gables or lean-to roof slopes.
Slipped ridge and/or hip tiles.
Missing hip irons (used to secure the tile at the bottom of the hip).
Leaks and damp within the loft and to the upper roof timbers.
While relatively minor defects, they are fairly common. If left unchecked, the ingress of damp could decay roof timbers. Storms may also dislodge loose Ridge Tiles with the potential risk of injury, too.
Remedial Work and Costs
Repair is a fairly straightforward task:
- Eroded mortar joints need Repointing.
- Ridge or hip tiles which have come loose can be re-bedded with a suitably stiff mortar mix.
- Verges tend to need localised pointing up with mortar.
Another area to watch is Victorian slated hipped roofs to bay windows which may have hip roll joints in lead or zinc.
Top 10 Problems you may encounter
- Missing slates/tiles/ridges causing water penetration & roof leaks.
- Poor installation and unsatisfactory workmanship.
- Lack of regular inspection and maintenance.
- Ponding water causing sagging or overflow problems.
- Damage caused by third parties post-installation.
- Porous Mortar joints in adjoining brick walls and chimney breasts.
- The use of inferior materials that are not designed for the job in hand.
- Shrinkage Blistering Crazing Cracking and Splitting of roof materials.
- Nail fatigue on slated roofs, rotten timbers, fascias, soffits and battens.
- Lead Valleys Gulleys Wall and Chimney Flashing dislodged or damaged.