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ADVICE FROM THE TRADE

What we get called out for

Straight explanations of the problems we see most often — what causes them, what they mean, and when they are worth acting on. No sales pitch, just the reasoning.

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Keystone engineer clearing leaves from guttering at the eaves of a brick house
ROOFING5 min read

How blocked gutters end up as damp walls

A surprising amount of the internal damp we are called out to look at starts with a gutter that has not been cleared in years.

5 August 2026Read the article→

More from the trade

7 ARTICLES
Finished shower room with black-framed enclosure
BATHROOMSPlanning a bathroom refit: the order the work has to happen inMost bathroom projects overrun in the gaps between trades rather than in the work itself. Understanding the sequence is what prevents that.8 July 20267 min read
Wall-mounted consumer units and armoured cabling
ELECTRICALWhat to do when a breaker keeps trippingA breaker that trips is not being awkward. It is reporting a fault it has been designed to detect — and the useful question is which one.11 June 20266 min read
Wall-hung condensing gas boiler
HEATINGWhy your boiler keeps losing pressureTopping the system up every few weeks is not maintenance — it is a symptom. Here is where the water is usually going.6 May 20266 min read
Keystone engineer servicing an oil-fired pool heater in a garden pool plant room
POOL HEATINGWhat an oil-fired pool heater needs each springA pool heater spends most of the year switched off and outdoors. Bringing it back into service is a sequence, and the order matters.14 April 20266 min read
Keystone engineer checking the expansion vessel on an unvented hot water cylinder
PLUMBINGWhy unvented cylinders need a G3 qualified engineerAn unvented cylinder stores hot water at mains pressure. That is what makes the showers good, and it is also why the qualification exists.9 March 20266 min read
Keystone engineer servicing an external oil-fired boiler beside a domestic oil tank
HEATINGOil vs gas: which heating system suits your home?The choice is usually made for you by what is already at the boundary of your property. Here is what actually separates the two, and what it means if you are thinking of switching.18 February 20267 min read

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