Declined for renderers insurance? Rendering, EWI and external wall risks
Why renderers get declined online
Quote-and-buy sites treat “plasterer” as one tidy trade: indoors, at ground level, wet trades on internal walls. That version of the trade sails through. But “plasterer” on a drop-down list and a rendering business are not the same risk — and the form has no way to tell the difference until your honest answers trip a rule.
External render means working at height on the outside of buildings. EWI means changing what the external wall is actually made of. Spray application adds machinery and overspray. Each of those is a question most online systems either can’t ask or answer with an automatic decline. Nobody has looked at your business — the system simply wasn’t built for it.
What actually makes rendering hard to place
1. External wall systems after Grenfell
Since the Grenfell Tower fire, the whole UK market has become far more careful about anything involving the external envelope of a building. Underwriters ask about the combustibility of insulation and cladding materials, the systems you install, the height and type of buildings you work on, and whether you install to a manufacturer’s specification. An internal plasterer never faces those questions; a rendering and EWI contractor faces all of them. Online forms mostly can’t process the answers, so they decline instead.
2. Height is part of the job
External render means scaffold, towers and mast climbers on gable ends and multi-storey elevations. Online products tend to carry hard height limits priced for trades that occasionally go up a ladder. Underwriters who see rendering risks regularly rate height on its merits: typical and maximum heights, access arrangements, and who puts the scaffold up.
3. Spray-applied systems and overspray
Machine-applied render and sprayed finishes speed the job up, but they add exposures a form never asks about: overspray onto neighbouring property and parked cars, compressors and pumps on site, and products that behave differently from a hawk and trowel. Declared properly, it’s all insurable — but it has to be declared, not squeezed through a question set written for internal skimming.
4. System warranties and specifications
Modern render and EWI systems are usually installed as a warranted system — the manufacturer specifies the build-up and expects approved installation. That cuts both ways: it’s evidence of a controlled process, but it also means a failure can involve arguments about specification, substrate and workmanship years after you left site. Underwriters want to know whose specification you work to and what records you keep. A tick-box never asks; a broker makes sure it’s presented properly.
5. New ventures and claims
A past claim — sometimes just a notified incident — can trigger an automatic online decline, and many quote-and-buy insurers refuse new ventures outright. Underwriters take a more grown-up view: what happened, what changed, and how many years you’ve spent on the tools, even if the business itself is new.
Risk management counts in your favour
Here’s the flip side. If you install to manufacturers’ specifications, hold installer approvals for the systems you use, keep records of what went on which building, and control overspray and access properly, that’s evidence — and a broker puts it in front of an underwriter in writing. It genuinely changes how the risk is read. An online form never gives you the chance to say any of it.
Why the broker route works differently
A broker doesn’t feed your details into the same machine and hope. We present the whole risk to human underwriters — including insurers and specialist schemes that don’t sell through comparison sites at all: the split between internal and external work, the systems you install, heights, spray application, your records and approvals, and what changed after any claim. We can’t promise acceptance — nobody honestly can — but for most rendering businesses we can usually find a market, and we’ll tell you quickly if we can’t.
The cover a rendering business usually needs
Most programmes are built from the same blocks: public liability for injury or damage to others — including overspray and damage to the building you’re working on; employers’ liability, a legal requirement if you employ anyone — including labour-only subcontractors; contract works cover for materials and part-finished work on site; cover for plant, spray equipment and tools; and professional indemnity where you design or specify build-ups rather than just installing them. The right shape depends on the split of your work.
What to have ready when you call
The call goes quicker if you know roughly: turnover and wage bill, the split between internal plastering, external render and EWI, the systems and materials you install, whether anything is spray-applied, typical and maximum heights, the types of building you work on, who works for you (employees, labour-only and bona fide subbies), claims in the last five years, and when your current cover runs out — or when the job starts, if you’re uninsured right now. Then call 0117 325 0027. If it’s urgent, say so; we deal with time-pressed placements all the time, though we’ll never promise cover by a set date until an insurer confirms it.
Frequently asked questions
Why do online insurance sites decline renderers?
Most quote-and-buy systems are built around internal plastering — a low-risk, ground-level trade. The moment your answers mention external rendering, external wall insulation or spray-applied systems, you’re outside what the form was designed for. Since Grenfell, anything touching the make-up of an external wall gets far more underwriting scrutiny, and automated systems tend to decline rather than ask follow-up questions.
I mostly do internal plastering with some rendering on the side. Does that matter?
Yes — and it’s exactly the kind of split an online form handles badly. If any part of your income comes from external render or EWI, that part drives how the whole risk is viewed. Declaring it honestly often triggers a decline online, while leaving it out risks a policy that doesn’t respond. A broker can present the actual split of your work so it’s rated properly rather than refused outright.
Why do insurers ask so many questions about external wall insulation?
Because EWI changes the construction of the building itself. Since Grenfell, questions about the combustibility of insulation and cladding materials have become standard across the UK market, and underwriters want to know what systems you install, on what buildings, and to whose specification. It doesn’t make the work uninsurable — it means the detail has to be presented properly, which is what a broker does.
What information do I need before I call?
Rough turnover and wage bill, the split between internal plastering, external render and EWI work, the systems and materials you typically install, whether anything is spray-applied, typical working heights, the types of building you work on, who you employ — including labour-only subcontractors — claims in the last five years, and when your current cover runs out. Don’t worry if you don’t have it all; we’ll work through it on the phone.
Do you promise to get me covered?
No, and you should be wary of anyone who does. What we can honestly say is that we know which underwriters will look at rendering and external wall risks, and we can usually find a market. If we genuinely can’t, we’ll tell you straight and tell you why — which at least gives you something to fix.
Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This page is general information, not advice on a specific policy.