Gas Safe registered · 540834 Peterborough & Cambridgeshireinfo@reactionplumbing.com07863 776312 Services Areas Our WorkReviewsAboutContact07863 776312Get a Free Quote Menu - Home - Services - Gas Checks & Capping Old Gas SuppliesGas checks & capping · Peterborough & Cambridgeshire # Gas Safety Checks &Capping Off Old GasSupplies In Peterborough A one-off gas safety check, a tightness test, or capping off a gas supply you no longer use — carried out by Gas Safe registered engineers with a quote usually within one working day. Get a quote07863 776312 Gas Safe registered 540834 · 76 Checkatrade reviews · family-run in Peterborough since 2012. 1 working day Typical quote turnaround 76 reviews Verified on Checkatrade Gas Safe 540834 Registered engineers £5m / £10m Public & employers' liability Since 2012 Family-run, team of four What it is ## What a gas check or capping job actually involves Not every gas job is an annual certificate or a boiler breakdown. A lot of what we do is one-off: a homeowner who can smell something not quite right near the cooker, a kitchen fitter who needs a gas point disconnected before units go in, or a house with an old gas fire in a room nobody has used in years and a pipe behind the fireplace that nobody's touched since. This page covers that middle ground — checks, tests and capping work that fall outside a routine service or a landlord certificate. A gas safety check is exactly what it sounds like: an inspection of an appliance, a pipe run, or a whole installation, carried out by a Gas Safe registered engineer, to confirm it is safe and tell you plainly if it is not. A tightness test is a specific, measurable check of the pipework for leaks, using a gauge rather than a guess. Capping off means permanently sealing a gas supply that is no longer connected to anything, so a length of live pipe isn't left behind a wall, under a floor, or dangling where a cooker or fire used to be. This work comes up constantly around kitchen refits, house renovations, appliance removals, house moves and reported gas smells. It's rarely urgent enough to be a full emergency call-out, but it isn't something to leave either — a suspected leak or an uncapped supply is exactly the kind of thing that turns into a serious problem if it's ignored. We quote most of this work on the job rather than off a fixed price list, because a tightness test on a straightforward domestic supply is a very different job to capping four redundant points in a house that's had three kitchens in thirty years. What doesn't change is the response: we usually get a quote back to you within one working day, and Gas Safe registered engineers do the actual work. ### Who this is for - Homeowners who can smell gas A faint smell near an appliance, under a floor, or outside near the meter that needs investigating properly rather than ignored. - Kitchen and bathroom fitters Trades who need a gas point safely disconnected or capped before units go in, and reconnected once the new appliance is fitted. - Homeowners removing an old gas fire A gas fire coming out as part of a renovation, with the supply behind it needing to be capped off correctly, not just turned off at a tap. - People buying or selling a house An old cooker point, a disused fire, or an unidentified pipe found during a survey or renovation that needs checking and dealing with. - Anyone unsure about existing pipework Visible gas pipework that looks old, has been disturbed by other trades, or was never signed off by anyone qualified. What happens if it waits ## Why this isn't a job to put off None of this work is glamorous, which is exactly why it gets left. An uncapped supply or an unexplained smell sitting quietly in a house is a bigger risk than most people realise, because gas problems don't always announce themselves loudly. ### A leak that's slow, not sudden Gas leaks are often small and gradual rather than dramatic. A faint smell that comes and goes can still mean gas is escaping into a void, under a floor or behind a wall. ### Live pipework left behind after removals When an old fire, cooker or heater is taken out without the supply being capped properly, what's left is a live gas pipe with nothing safely stopping it — sometimes just a loosely fitted plug. ### DIY capping that isn't actually gas-tight A cap fitted by someone without the right training or fittings can look fine and still not hold pressure. It has to be tested, not just tightened. ### Carbon monoxide from a fault nobody's checked An appliance or flue issue that's never been picked up because no certificate or check has ever been carried out on it produces a gas you cannot see or smell yourself. ### Trades working around gas pipework unqualified Kitchen fitters, builders and electricians disturb gas pipework during other work more often than people think. Anyone not Gas Safe registered altering or disconnecting it is against the law and a genuine safety risk. ### Insurance and sale complications An unresolved gas issue, or evidence of amateur work on a gas supply, can complicate a house sale or an insurance claim if something goes wrong later. ### Mistakes we get called out to fix - Turning a gas tap off and assuming that counts as capped — it doesn't; the supply needs to be sealed and tested. - Letting a kitchen fitter or builder disconnect or cap a gas point themselves. - Ignoring an intermittent smell because it isn't there every time you check. - Leaving an old gas fire's supply live behind a boarded-up fireplace 'for now'. - Assuming a previous owner had disused pipework dealt with properly — ask for proof, or have it checked. - Calling anyone who isn't Gas Safe registered for gas work of any kind. Check the register — our number is 540834. Our process ## Five steps from call to sealed and signed off 01 ### Tell us what's going on A smell, an old appliance coming out, a kitchen fitter needing a point disconnected — describe the situation and we'll tell you straight away if it's a same-day matter or something we can schedule. 02 ### Site visit and inspection A Gas Safe registered engineer inspects the relevant pipework or appliance, identifies exactly what's live, what's redundant, and what (if anything) is wrong. 03 ### Testing A gas tightness test on the pipework using a proper gauge, not a guess — this confirms whether there's a leak and roughly where it sits if there is one. 04 ### Capping or repair carried out Redundant supplies are capped with the correct fittings and re-tested to confirm they're gas-tight. Any fault found is explained in plain English and quoted before we touch it. 05 ### Confirmation and sign-off You get a clear explanation of what was found and what was done. Any work carried out is covered by our 1-year workmanship guarantee. What you get ## Why people call us for this rather than guess ### Quote usually within 1 working day Send us the details and we'll get back to you quickly with a price, rather than leaving you waiting to find out if it's even worth booking. ### Proper tightness testing, not a sniff and a shrug We test pipework with a gauge and give you a definite answer, which matters when the question is 'is this safe or not'. ### Capping done to the correct standard Redundant supplies are capped with the right fittings and tested afterwards, so nothing is left half-sealed behind a wall or under a floor. ### Fits around other trades We regularly work alongside kitchen fitters and builders, disconnecting and later reconnecting gas points at the right stage of the job. ### One team for the whole job If a check turns up a fault, the same Gas Safe registered engineers can repair it or quote a replacement, rather than passing you to someone else. ### Properly insured and qualified Gas Safe registered 540834, City & Guilds / NVQ qualified engineers, £5m public liability and £10m employers' liability. In detail ## What this covers, situation by situation This kind of work comes in a few recurring forms. Here's how each one is usually handled. ### Suspected gas smells If you can smell gas strongly and it's persistent, that's a National Gas Emergency Services call (0800 111 999) before anything else — turn off the supply at the meter if it's safe to do so and don't use switches or naked flames. What we deal with is the less clear-cut version: an occasional or faint smell, one that seems to come from a specific appliance or area, or one that's been checked before with nothing found. We inspect the appliance, the connections and the visible pipework, and carry out a tightness test on the installation to see whether it's holding pressure as it should. Where the source is a specific fitting or joint, we can usually pinpoint and repair it on the same visit. ### Capping off old gas fires Gas fires get removed as part of renovations far more often than they get replaced, and the supply behind them is often the last thing anyone thinks about. Capping it off properly means fitting an approved cap to the pipework at a safe point, not just leaving the isolation valve shut, and pressure-testing the result to confirm it's gas-tight. This is usually a short job on its own, and one we can often do at the same time as capping other redundant points in the same property if there are several — an old cooker point in a previous kitchen layout, for instance. ### Disconnections and capping for kitchen work Before a kitchen refit, the existing gas cooker or hob point usually needs disconnecting so units and worktops can go in, and either capping off (if gas cooking isn't returning) or leaving safely isolated ready for reconnection once the new appliance is fitted. We work directly with kitchen fitters and builders on timing — disconnecting at the start of the job and coming back to reconnect and test the new appliance once it's installed, so the fitter isn't held up and nothing gets left unsafe in between. ### Gas pipework alterations Moving a cooker to a different wall, extending a supply to a new appliance position, or re-routing pipework as part of a renovation all count as gas work and have to be carried out and tested by a Gas Safe registered engineer. We assess the existing run, plan the alteration, carry out the work and pressure-test the finished installation before anything is connected and used. ### One-off gas safety checks Not every check is an annual certificate. Homeowners sometimes want a one-off inspection after buying a house with unfamiliar gas appliances, after other trades have worked near gas pipework, or simply for peace of mind. We inspect appliances, pipework, ventilation and flues and give you a plain-English report of what we found. This is a genuinely useful, low-cost way to get an independent view of an installation you didn't fit and don't fully know the history of. ### Where we cover, and what we don't do We carry out gas checks, tightness tests and capping work across Peterborough, Yaxley, Hampton, Whittlesey, Huntingdon, Sawtry, Stilton, Stamford, Market Deeping, Ramsey, Oundle and the surrounding Cambridgeshire towns. Free, no-obligation quote ## Get a quote for your gas check or capping job Tell us what's going on — a smell, an old fire coming out, a kitchen fitter needing a point disconnected — and we'll get back to you with a quote, usually within one working day. 07863 776312Gas Safe registered 540834 · £5m public liability · 1-year workmanship guarantee Common questions ## Gas checks & capping questions How much does capping off a gas supply cost?It depends on access and how many points need capping, so we quote on the job — usually within one working day of hearing the details. Can you turn off a gas fire supply and just leave it?No. Turning off an isolation valve isn't the same as capping. A redundant supply should be permanently capped with the correct fitting and pressure-tested to confirm it's sealed. I can smell gas faintly near my cooker — is that an emergency?If the smell is strong or persistent, call the National Gas Emergency Service on 0800 111 999 first. For a faint, occasional smell, we can inspect and pressure-test the installation to find out what's going on. Can you disconnect our gas cooker point before our kitchen fitter starts?Yes — we regularly work alongside kitchen fitters, disconnecting the supply before the job starts and reconnecting and testing the new appliance once units are in. What is a gas tightness test?A test using a gauge connected to the installation to check whether the pipework is holding pressure correctly, confirming whether there's a leak in the system rather than guessing from a smell. We're buying a house with an old, disused gas point — can you check it?Yes. We can inspect any unidentified or disused pipework and either confirm it's already safely capped or cap it off properly if it isn't. Can I cap off a gas supply myself?No. Any work on a gas supply, including capping it off, has to be carried out by a Gas Safe registered engineer. It's against the law otherwise, as well as a genuine safety risk. Do you carry out one-off gas safety checks that aren't a landlord certificate?Yes. If you want an appliance, pipework run or whole installation checked outside of an annual certificate, we can inspect it and give you a plain-English report. How quickly can you get someone out?We usually respond with a quote within one working day. For anything urgent, such as a suspected leak, tell us on the phone and we'll prioritise accordingly. What happens if you find a fault during a check?We explain exactly what's wrong in plain English, quote the repair, and only carry it out once you've agreed. The same Gas Safe registered team can handle the fix directly. Where we work ## Gas Checks & Capping Old Gas Supplies across Peterborough We cover Peterborough and the surrounding Cambridgeshire towns from our base at 3 Nightingale Drive. See the full areas we cover or call to check your postcode. - Gas Checks & Capping Old Gas Supplies in Peterborough - Gas Checks & Capping Old Gas Supplies in Yaxley - Gas Checks & Capping Old Gas Supplies in Hampton - Gas Checks & Capping Old Gas Supplies in Whittlesey - Gas Checks & Capping Old Gas Supplies in Huntingdon - Gas Checks & Capping Old Gas Supplies in Sawtry - Gas Checks & Capping Old Gas Supplies in Stilton - Gas Checks & Capping Old Gas Supplies in Stamford - Gas Checks & Capping Old Gas Supplies in Market Deeping - Gas Checks & Capping Old Gas Supplies in Ramsey - Gas Checks & Capping Old Gas Supplies in Oundle - Gas Checks & Capping Old Gas Supplies in Cambridgeshire Related services ## Other work we take on - Landlord Gas Safety (CP12)£60 + VAT - Boiler Servicing£80 + VAT - General PlumbingQuoted on the jobHomepageContact us ## Checked, tested, properly capped. Gas Safe registered 540834, tightness testing done properly, and a quote back to you within one working day. Get a quote07863 776312 A family-run plumbing, heating and gas firm based near Peterborough. Established 2012, owned and run by Matthew McGonagle. Gas Safe registered · 540834 £5m public liability · £10m employers' liability ## What we do - Bathroom Installation - Boiler Installation - Boiler Servicing - Boiler Repair - General Plumbing - Central Heating & Radiators - Underfloor Heating - Water Tank & Cylinder Replacement - New Build Plumbing - Landlord Gas Safety (CP12) - Gas Checks & Capping Old Gas Supplies ## Areas covered - Peterborough· - Hampton· - Yaxley· - Stilton· - Whittlesey· - Sawtry· - Huntingdon· - Ramsey· - Stamford· - Market Deeping· - Oundle· - Cambridgeshire ## Get in touch - 07863 776312 - info@reactionplumbing.com - 3 Nightingale DrivePeterborough, CambridgeshirePE7 3HR - Opening hours8:00am – 8:00pm, seven days a week (24/7 for genuine emergencies) - Follow us on Facebook76 Checkatrade reviews © 2026 Reaction Plumbing and Heating LTD. Gas Safe register number 540834. All plumbing & heating servicesAreas we coverAboutOur workReviewsContactPrivacy policyTerms & conditionsCookie policy Call nowFree quote