If your chimney needs repointing, a new cowl or the flaunching redone, the first question is usually whether you have to pay for scaffolding on top of the repair itself. The honest answer is: usually yes, but not always. Here is how to tell which side of the line your job falls on, and what it is likely to cost around Hertfordshire.
For anything involving sustained work at the chimney, such as repointing, rebuilding the top courses, replacing flaunching or fitting lead flashing, scaffolding is almost always required. The Work at Height Regulations 2005 apply to anyone working on your roof, and no reputable builder or roofer will stand on a ridge for two days with a trowel in hand and nothing to catch them. If a trade offers to do a full repoint from a ladder, treat that as a warning sign rather than a saving.
Quick, light tasks are different. Swapping a cowl, refitting a slipped pot cover or inspecting the stack can sometimes be done from a properly secured roof ladder or a cherry picker, provided access is straightforward and the job takes minutes rather than hours.
There are three common alternatives, and each suits a narrow set of circumstances. A roof ladder hooked over the ridge works for brief inspections or fitting a bird guard on a low bungalow with a shallow pitch. A tower scaffold can suit a gable end chimney where the stack rises beside the wall rather than through the middle of the roof. A powered access platform, often called a cherry picker, can reach a stack quickly if there is firm, level ground and space for the machine, though hire typically runs £200 to £400 a day with an operator, so it only beats scaffolding on very short jobs.
None of these work well for a mid roof stack on a two storey house, which is the most common setup in older Kings Langley, Abbots Langley and Hemel Hempstead properties. For those, a scaffold with a proper working platform around the chimney is the safe and practical option.
A typical chimney scaffold is a tower built from the ground up one side of the house, with a cantilevered or saddle platform over the roof so the tradesperson can stand level with the stack and work both hands free. Boards are supported clear of the tiles to spread the load, so a properly built scaffold should not damage your roof.
Expect the erect and dismantle to take half a day each. In Hertfordshire, a straightforward chimney scaffold on a two storey house generally comes in somewhere between £600 and £1,200 including a standard hire period, though it depends on height, whether the stack is mid roof or gable end, and how easy access is around the property. Conservation areas and homes fronting directly onto the pavement, common in older parts of Kings Langley, can add cost because of pavement licences or restricted working space.
The biggest saving is bundling work. Once the scaffold is up, the marginal cost of extra days on hire is small compared with erecting it twice, so if the chimney needs attention it is worth having the roofer check ridge tiles, flashing and gutters at the same time. Ask your scaffolder what the standard hire period covers, commonly four to eight weeks, and what the weekly rate is beyond that.
It also helps to get the scaffold quote and the repair quote lined up before anyone starts. Some roofing firms arrange scaffolding themselves and add a margin; others are happy for you to book it directly with a local scaffolder, which is often cheaper and gives you a direct line if the hire needs extending. Either way, check the scaffolder carries public liability insurance and will issue a handover certificate before anyone works from the platform.
Short, low risk tasks can lawfully be done from a ladder, but the Work at Height Regulations require proper access for anything longer or riskier. Repointing or rebuilding a stack from a ladder would not meet that standard, and most insurers would take a dim view of it too.
The scaffold usually goes up a day or two before the repair and comes down once the roofer confirms the work is finished, often one to three weeks in total. Standard hire periods normally cover this comfortably, so you only pay extra if the job overruns significantly.
A properly built chimney scaffold spreads its load on boards and padded supports, so tiles and lawns should be left as found. It is reasonable to ask your scaffolder beforehand how they will protect the roof covering and where the standards will sit on the ground.
Oxley Scaffolding covers Kings Langley, Hertfordshire and the borders. Tell us what you are planning and you will get a straight answer and a fair price.
One call, one site visit, one fixed price. CHAS accredited, CISRS-registered erectors, fully insured, kit signed off before hand-over.