Bird nest clearance from blocked flue — failed Gas Safe engineer smoke test, NACS registered chimney sweep and Gas Safe referral partner, Allchimney Sweeps, Havering
NACS Registered Since 2011 · Certificate Issued

Gas Safe Referral Partner — Romford & Havering

Chimney must be swept and inspected before any new gas appliance is installed. We are the trusted chimney sweep referral for Gas Safe engineers across Romford and Havering.

Why It Matters

Chimney Swept Before Gas Work

Before any new gas fire is installed — or an existing one recommissioned — the chimney must be swept and confirmed safe. A failed smoke spillage test stops a gas installation in its tracks.

Gas Safe engineers do not climb roofs or chimneys. When the flue fails a draw test, they call us. We attend, identify the issue, clear it, and issue a NACS certificate. The gas engineer returns and completes the job.

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Smoke draw test on gas fuel effect appliance — Building Regulations Part J flue evacuation and spillage test, NACS registered, Allchimney Sweeps, Emerson Park

Part J flue evacuation and spillage test on GFE appliance — Emerson Park. Required before Gas Safe engineer can sign off new gas fire installation. Clear draw confirmed.

Common Issues

Why Smoke Tests Fail

01

Cobwebs

The most common cause of a failed draw test that surprises everyone. Cobwebs near the chimney top or just inside the pot restrict airflow enough to cause smoke spillage. One sweep clears it — job done.

02

Bird Nests & Debris

Nests, fallen debris and accumulated soot can partially or fully block a flue. We clear the blockage, sweep the chimney and issue the NACS certificate so the installation can proceed.

03

Vented Capping Cowl

When an old gas fire is decommissioned, a vented capping cowl is often fitted to the chimney pot. It must be removed before a new appliance is installed. Gas engineers cannot remove it — that is rooftop access work. We do it.

04

Incorrect Terminal

The wrong cowl or terminal fitted to the chimney pot can restrict flue draw. We identify the issue, fit the correct terminal, sweep the flue and clear the installation for the gas engineer.

NACS Certificate of Chimney Sweeping issued after smoke test on GFE appliance — Allchimney Sweeps, Romford

NACS Certificate of Chimney Sweeping — issued on every sweep, signed and dated by a registered NACS sweep. Required annually by most home insurers for solid fuel appliances.

Solid fuel open fire — chimney swept, smoke tested and NACS certificate issued, Allchimney Sweeps, Romford

Solid fuel open fire — swept, smoke tested and NACS certificate issued, Romford. Gas Safe engineers refer us when they encounter blocked or uncertified chimneys.

For Gas Safe Engineers

Your Local Referral Partner

If you are a Gas Safe registered engineer working in Romford or the London Borough of Havering and you need a chimney swept before you can complete an installation — we are your call.

Same day response. NACS registered. Certificate issued. We get you back on the job quickly. Add our number to your contacts now.

From the Job — Havering

Bird Nest Clearance — Flue Fully Blocked

Flue fully blocked by a bird nest — identified during a Gas Safe engineer's annual gas fire service across Havering. The engineer ran the draw test, smoke spilled back into the room, and the installation was stopped. Allchimney Sweeps called in as Gas Safe referral partners to clear the blockage and restore safe flue operation.

This is an almost weekly occurrence across Romford and Havering during the spring and early summer months. Jackdaws and starlings nest in unprotected chimney pots. The nest does not need to be large to block draw — a partial restriction is enough to fail a smoke spillage test.

We work regularly alongside Gas Safe registered engineers across Havering and Romford. Same day response. NACS certificate issued. We get your gas engineer back on the job the same day wherever possible.

Bird nest clearance from blocked flue — failed Gas Safe engineer smoke test, NACS registered chimney sweep and Gas Safe referral partner, Allchimney Sweeps, Havering

Flue fully blocked by bird nest — identified during Gas Safe engineer's annual service, Havering. Cleared, swept and NACS certificate issued same day.

For Gas Safe Engineers

How the Referral Works

01

Draw Test Fails

Gas Safe engineer carries out draw test. Smoke spills. Installation cannot proceed. Engineer calls us.

02

Same Day Response

We attend same day where possible. Identify the cause — nest, debris, cowl, soot. Sweep and clear the flue.

03

NACS Certificate Issued

NACS Certificate of Chimney Sweeping issued on completion. Smoke draw test re-run and confirmed clear.

04

Installation Proceeds

Gas engineer returns with clear certificate. Installation completed. Job done.

Quick Answers

Gas Safe Referral — FAQ

Do I need the chimney swept before a new gas fire?

Yes. Before any new gas appliance is installed — or an existing one recommissioned — the chimney must be swept and confirmed safe. A clear smoke draw test result and NACS certificate is required before the gas engineer can sign off the installation under Building Regulations.

Can you remove a capping cowl from the chimney pot?

Yes. When an old gas fire is decommissioned, a vented capping cowl is often fitted to the chimney pot. It must be removed before a new appliance is installed. Gas Safe engineers do not carry out work at chimney pot level. We do — it is part of the trade. We remove the capping cowl, sweep the chimney and confirm the flue is drawing correctly.

How quickly can you attend after a failed draw test?

Same day in most cases across Romford and Havering. Call us direct on 01708 956086 or WhatsApp. We understand the gas engineer has another job waiting — we respond quickly to get everyone back on the job.

Do you work with commercial properties?

Yes. Domestic properties of all types across Romford and the London Borough of Havering — Victorian terraces, period properties, 1920s semis, modern new builds. Every appliance type covered. Every sweep carries the same NACS certificate.

Book a Chimney Sweep

Certificate issued. Same day response. WhatsApp a photo for an instant assessment.

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