- Guide price
- £1,750–£3,000
- Survey
- Free for new and replacement roofs
- Quote
- Fixed, in writing
- Coverage
- England, Wales, Scotland, NI
Tyne and Wear at a glance
- Largest towns
- Newcastle upon Tyne, Sunderland, South Shields, Washington
- Postcode areas
- DH, NE, SR
- Building control
- Newcastle City Council, Sunderland City Council, South Tyneside Council and 2 other councils
- Neighbouring areas
- Northumberland · County Durham · North Yorkshire · Cumbria
- Guide price region
- North East (−7% on West Midlands rates)
How much does balcony or terrace waterproofing cost in Tyne and Wear?
Guide prices including VAT at North East rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Balcony (12 m²), liquid-applied, scaffold | £1,750–£3,000 |
| Single garage (18 m²), EPDM rubber | £1,500–£2,600 |
| Extension (20 m²), GRP, new deck + insulation | £2,800–£5,000 |
Which flat roofs are common in Tyne and Wear?
Flat roofs in Tyne and Wear sit on bungalows with flat-roofed side extensions and dormers, 1960s and 1970s link-detached houses with flat-roofed garages and porches and lock-up garage blocks on estates. 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. Approximate 1991–2020 regional averages based on Met Office data.
Building regulations in England
Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In Tyne and Wear the application goes to Newcastle City Council, Sunderland City Council, South Tyneside Council and 2 other councils. More on the rules.
How long does it take to waterproof a balcony?
A small balcony is typically waterproofed in two to four working days, plus time for scaffold if it is above ground floor. Liquid and GRP systems need dry weather and cure time between coats, which sets the pace.
The balcony door will be out of use while the membrane is laid and curing, and the room behind may be noisy while old paving or screed is broken out. If the team needs to work through the house, we agree a route and protect floors. Larger terraces with paving or decking take longer, because the finish has to be lifted and reinstated. Resin systems smell while they cure, so nearby windows are best kept closed.
Do I need planning permission for a balcony or roof terrace?
For a new balcony or roof terrace, generally yes. In England, balconies and raised platforms are not permitted development for houses, so a planning application is normally needed, and the other nations have their own rules.
Re-waterproofing an existing, approved balcony that looks the same afterwards does not normally need planning. Building regulations are a separate question. A terrace over a heated room is a thermal element, so replacing most of it can bring insulation requirements and approval. Turning a flat roof into a terrace also raises structural questions, because people, furniture and paving add load, and it needs guarding, such as a balustrade, that meets the regulations. A structural engineer should confirm that the roof can carry the new use.
Listed buildings and conservation areas add another layer of control. Our building regulations page covers approvals, and our planning permission guide covers the planning side.
Which towns in Tyne and Wear do we cover?
- Newcastle upon Tyne
- Sunderland
- South Shields
- Washington
- Wallsend
- Newburn
- Whitley Bay
- Houghton-Le-Spring
- Felling
- Jarrow
- Gosforth
- Whickham
- Blaydon-on-Tyne
Balconies and roof terraces in Tyne and Wear: questions
Which towns in Tyne and Wear do you cover?
All of Tyne and Wear. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.
How much does balcony or terrace waterproofing cost in Tyne and Wear?
£1,750–£3,000 for a 12 m² balcony in a liquid-applied system including scaffold, at North East guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Which postcode areas do you cover in Tyne and Wear?
All of Tyne and Wear, including the DH, NE, SR postcode areas. Send your full postcode and we'll confirm.
Can you waterproof a balcony without lifting the tiles?
Sometimes a liquid system can go over a sound, well-bonded surface, but if water is already getting under the tiles they usually have to come up.
What is an inverted roof terrace?
It is a terrace where the insulation sits above the waterproofing, held down by paving or ballast. The membrane stays protected and at a steadier temperature.
Can I put decking straight onto my flat roof?
Not directly onto the membrane. Decking needs a supporting system that spreads the load and lets water drain, and the roof must be checked for the extra weight.
Everything about balconies and roof terraces → · All flat roofing in Tyne and Wear →