Hemel Hempstead · Hertfordshire
Roof structure repairs in Hemel Hempstead
Many older roofs, in Hemel Hempstead and across Hertfordshire alike, were built with slim purlins and few ties. A little historic movement is normal, so we check whether the roof is still moving before recommending how far the strengthening needs to go.
Guide price from£315per rafter inc VAT
- Postcodes
- HP1, HP2, HP3
- Population
- about 96,000
- Area
- Hertfordshire
- Pricing region
- East of England
How do local ground conditions affect roof structure repairs in Hemel Hempstead?
With roughly 96,000 people, Hemel Hempstead spans postcode districts HP1, HP2, HP3 in Hertfordshire. Neighbouring towns we cover: Berkhamsted (5 miles), St Albans (5 miles) and Harpenden (6 miles).
Shrinkable clay is widespread in Hertfordshire. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Hertfordshire: Garden-city houses in Letchworth and Welwyn, 1930s semis, Victorian terraces and post-war new-town estates.
From first photo to finished repair
Send photos
Photograph the roof from across the street, both slopes if you can, and the loft timbers with a torch. Include the eaves and any cracks just below them. From these we can usually tell sag from spread and whether an engineer is needed.
Loft and outside survey
On site we check rafter sizes and spacing, purlins, struts, ties and wall plates, look for rot and past alterations, and measure any lean at the wall head. The covering is noted too, because its weight affects the repair.
Written quote
You receive a no-obligation written quote listing each timber repair, any ties or straps, propping, scaffolding and making good. Once the repair is specified, the figure becomes a fixed price in writing.
Symptoms that point to roof structure repairs
- Top of an outside wall leaning out at eaves level
- Horizontal cracks in the wall just below the eaves or ceiling line
- Struts, collars or ties cut out or missing in the loft
Guide prices for roof structure repairs in Hemel Hempstead
Prices in Hemel Hempstead are worked out on East of England rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Repairing or doubling a rafter | £315 – £630 | per rafter |
| Purlin and strut strengthening | £1,250 – £3,150 | per roof |
| Tying in roof spread (straps and ties)est. | £840 – £2,600 | per roof |
Methods for roof structure repairs
Wall plate replacement
Rotten or crushed wall plates are replaced in short lengths while the rafters above are propped, and bedded on the wall in mortar. The plate is then strapped down to the masonry. It is often combined with rafter foot splices along the same run.
Best for: Rot along the eaves where rafters bear on the wall
Purlin and strut strengthening
Undersized purlins are strengthened with extra timber or replaced, and new struts are taken down to a load-bearing wall. Where there is no suitable wall, an engineer designs the load path. Temporary props hold the roof while members are changed.
Best for: Sagging slopes, slim purlins and struts removed from the loft
Rules for roof structure repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Frequently asked questions
How much will roof structure repairs cost in Hemel Hempstead?
Guide prices for roof structure repairs in Hemel Hempstead start from about £315 per rafter, including VAT, on East of England rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Hemel Hempstead?
We do. Hemel Hempstead and the surrounding area are covered, including nearby Berkhamsted and St Albans. A free initial assessment from your photos is the first step.
Is the ground in Hertfordshire prone to subsidence?
South Hertfordshire around Watford, Borehamwood and Potters Bar is London Clay, while the north and west are chalk with clay-with-flints and the east has boulder clay. The clay areas are prone to seasonal subsidence near trees. Only an investigation can say why a particular building has moved.
Do roof structure repairs need building control?
Usually yes, where the structure is strengthened or altered, or the covering becomes significantly heavier. In England and Wales that falls under Part A, in Scotland it generally needs a building warrant, and in Northern Ireland council building control approves it. We deal with building control where the work needs it.
Can the roof be strengthened without removing the tiles?
In most cases, yes. Doubling rafters, adding struts and fitting ties can all be done from inside the loft with the coverings in place. Tiles usually only come off where timber near the eaves is badly decayed, or the roof is being re-covered anyway.
Other structural repairs in Hemel Hempstead
- Concrete repairs
- Bay window subsidence repairs
- Wall tie replacement
- Lintel replacement
- Floor joist repairs
Roof structure repairs near Hemel Hempstead
Get a free initial assessment of a sagging or spreading roof in Hemel Hempstead from your photos or a call, and find out whether an engineer is needed.