Stockton-on-Tees at a glance
- Postcode districts
- TS15, TS16, TS17, TS18, TS19, TS20, TS22, TS23
- Population
- about 79,957 (GeoNames)
- Council area
- Stockton-on-Tees Borough Council
- Building approval
- Stockton-on-Tees Borough Council building control, or a registered building control approver
- Nearest main town
- Middlesbrough, about 3 miles
- Guide price region
- North East (−7% on West Midlands rates)
Why upgrade to a warm roof in Stockton-on-Tees?
Small commercial buildings in Stockton-on-Tees with large flat roofs can lose a lot of heat through them. Where the roof is being replaced, upgrading the insulation at the same time is required in most cases and helps reduce running costs for the occupier.
In and around Stockton-on-Tees, flat roofs are typically found on bungalows with flat-roofed side extensions and dormers, and on low-rise post-war blocks of flats. England averages roughly 870 mm of rain a year; the North East is drier than the west but cold and windy near the coast, so wind uplift and freeze-thaw are in the specification.
How much does a warm roof upgrade cost in Stockton-on-Tees?
For Stockton-on-Tees we use North East rates: £2,600–£4,550 is the guide for a 20 m² extension roof in EPDM with a new deck and insulation, VAT included. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), EPDM, new deck + insulation | £2,600–£4,550 |
| Extension (20 m²), EPDM with sedum green roof | £4,100–£7,500 |
Do I have to insulate my flat roof when I replace it?
Usually, yes, if the roof is over a heated room and you are replacing more than half of its covering. In England, Wales and Northern Ireland, that counts as renovating a thermal element, so the roof should be upgraded to the renovation standard where that is technically, functionally and economically feasible.
The rules don't usually apply to patch repairs, or to an unheated, detached garage. The target U-value depends on where you live:
| Nation | Roof renovation target |
|---|---|
| England | 0.16 W/m²K (homes), 0.18 (non-domestic) |
| Wales | 0.16 W/m²K |
| Scotland | Section 6 framework, with a domestic benchmark of 0.12 W/m²K pursued as far as reasonably practicable |
| Northern Ireland | 0.18 W/m²K |
A new extension roof has a tighter target than a renovation: 0.15 in England and 0.13 in Wales. The economic test in England's guidance is a simple payback within 15 years. We handle building control or building standards where it is needed. The building regulations page sets out the approval routes in each nation.
What's included?
- Survey of the deck, joists and existing insulation
- Upstands, trims and kerbs reset to the new roof level
- New waterproofing, with a written workmanship guarantee
- Vapour control layer on the warm side of the insulation
Building regulations in England
Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.
Which nearby areas do we also cover?
- Billingham · 2 mi
- Thornaby-on-Tees · 3 mi
- Middlesbrough · 3 mi
- Yarm · 5 mi
- Hartlepool · 9 mi
- Darlington · 10 mi
Warm roof insulation upgrades in Stockton-on-Tees: questions
Do you cover Stockton-on-Tees?
Yes. Stockton-on-Tees is part of our County Durham coverage, including postcode districts TS15, TS16, TS17, TS18, TS19, TS20 and 2 more. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Stockton-on-Tees?
Where the work needs approval it goes to Stockton-on-Tees Borough Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a warm roof upgrade cost in Stockton-on-Tees?
£2,600–£4,550 for a 20 m² extension roof in EPDM with a new deck and insulation, at North East guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can you insulate a flat roof from inside instead?
It is possible, but insulating between or under the joists creates a cold roof, which needs ventilation and carries a higher condensation risk. When the roof is being re-covered anyway, a warm roof from above is usually the better option.
Is there VAT relief on flat roof insulation?
Don't count on it. Insulation fitted as part of a roof replacement is usually treated as part of a single standard-rated job. Check your own case with HMRC guidance or an adviser.