What do rooflight upstands & kerbs in Billericay involve?
Our rooflight upstands & kerbs service in Billericay covers insulated kerbs built and waterproofed to suit your rooflight. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Coastal towns in the East of England see salty air, so we specify frame finishes and fixings with exposure in mind. Rooflight upstands & kerbs suit roofs where the old kerb is low, cold or leaking.
From Billericay to Basildon, Wickford and Brentwood, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Raised upstands for deep green or ballasted roofs
- Proprietary insulated kerbs
- Timber upstands with insulation
- Internal plaster-box linings
- Upstand repairs and rebuilds
- Fixings and falls agreed with the rooflight maker
- Matched to your roof covering
Before you order: points to check
- Upstand size must match the unit within a tight tolerance
- Membrane compatibility with the rooflight's sealants
Planning and building rules for Billericay
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
See our building regulations guide for U-values, glazing limits and self-certification.
Rooflight upstands & kerbs prices in Billericay
These are typical supply-and-fit ranges. For an address in Billericay, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or raised upstand | £715 – £1,195 | £595 – £995 |
| Standard insulated upstand Typical | £475 – £715 | £395 – £595 |
| Small upstand on new roof | £355 – £475 | £295 – £395 |
What happens next
- Tell us what you have. Send the CM11 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Rooflight upstands & kerbs near Billericay
Other services in Billericay
Questions about rooflight upstands & kerbs in Billericay
Why is my rooflight cold around the edge?
Usually an uninsulated upstand. Insulating the kerb and lining the reveal fixes most cold spots.
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
How high should a rooflight upstand be?
High enough to meet the rooflight manufacturer's minimum above the finished roof surface — commonly 150 mm. On roofs with deep finishes, such as green roofs, it needs to be taller.
Will I need planning permission in Billericay?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof.
Is the survey in Billericay free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
