For property owners who want to do this properly — and for the craftspeople who keep telling them the same thing
A window restorer told me recently that people are already calling to ask whether their frames can be done before winter. It was the end of August.
He was polite about it. He always is. But he has had this conversation every year for as long as he can remember, and the answer is always the same: probably not, and certainly not well.
This is not a complaint about clients. It is an observation about a pattern that is so consistent it has become a feature of the restoration calendar. And it costs people — in rushed work, in deferred problems, in the gap between what they hoped for and what they got.
The good weather instinct — and why it misleads
There is a logic to wanting facade work done in summer. The weather is predictable, the days are long, scaffolding is easier to work with, and the building looks most in need of attention when the sun is on it.
The problem is that everyone who owns a historic building has the same instinct at the same moment. Craftspeople who specialise in historic restoration — lime work, stone repair, repointing, window restoration — are fully booked from April through September. The people who call in August hoping to start in September are, in most cases, looking at the following year regardless of how urgent the work feels.
There is also a technical dimension to this. Lime-based mortars — the correct choice for most historic masonry work — should not be applied in temperatures below five degrees Celsius, and they cure best in moderate, stable conditions. High summer heat is not ideal: the mortar can dry too quickly, compromising the carbonation process that gives lime its strength. The mild, stable temperatures of early autumn are, in many respects, better working conditions for lime work than the heat of July.
Paint and varnish systems have their own temperature requirements. Applied in cold or damp conditions, they fail to cure properly and the failure may not be immediately visible — but it will become visible in the following months.
The timeline nobody accounts for
The assumption that restoration work can be commissioned and started within a few weeks is, for most historic building projects, simply incorrect. The actual timeline — from the decision to act to the moment work begins — typically looks something like this:
Finding the right craftsperson takes time. Not because there are no craftspeople, but because the ones who work correctly on historic buildings are not always easy to identify, and they are rarely immediately available. References need to be checked, previous work needs to be seen, and a meeting needs to happen before any decision is made.
Getting a proper assessment and quote is not a one-hour visit. A craftsperson who takes your building seriously will look carefully, ask questions, and take time to think before proposing a scope and a price. That process takes weeks, not days.
Comparing quotes — if you are getting more than one, which you should be for significant work — adds further time. A quote that arrives quickly and is significantly cheaper than others deserves scrutiny, not immediate acceptance.
Premiums and subsidies, where available for protected buildings or buildings in protected zones, have application processes that run on their own timescales. In Belgium, France, and the UK, these processes can take months. Missing the application window because work started before the paperwork was complete means losing money that was there to be claimed.
Permissions and heritage approvals for listed or protected buildings add another layer. Changes to the external appearance of a protected building typically require consent, and consent takes time. Starting work without it is a legal risk that no responsible craftsperson will accept.
Scaffolding needs to be planned, ordered, and installed. In busy periods, scaffold companies have lead times too.
Add these steps together and the realistic minimum, from the decision to act to the first day of actual work, is four to six months. For complex projects involving heritage approval and subsidy applications, it can be considerably longer.
Summer is when you work. Autumn is when you plan.
The practical implication of this timeline is straightforward: the work you want done next summer needs to be in planning now.
Autumn is the right moment to begin. The summer is over, you have had another season to observe the building — to notice which wall is always damp after rain, which window frame is starting to lift its paint, which section of pointing is beginning to erode. Winter will show you more: the areas where water is getting in, the places where frost is opening up cracks that were invisible in dry weather.
An inspection in autumn, followed by a considered assessment of what needs to be done and in what order, followed by the selection of the right craftsperson and the preparation of any necessary applications, puts you exactly where you need to be to start work the following spring or summer — with time, with the right people, and without the pressure that produces poor decisions.
A note on protected species — for those who already know they are there
Many owners of historic buildings are aware that their home is shared. The swift that returns to the same gap under the eaves every April. The bat colony that has roosted in the roof space for as long as anyone can remember. The barn owl that was already there when the current owners moved in.
These are not surprises to the people who live with them. They are part of the building’s life, and most owners who are aware of them have already accommodated that reality in how they think about their home.
What is worth knowing — and what is not always known — is that the legal protection of these species has practical implications for the planning of facade and roof work. In most European countries, the active nests and roosts of protected species cannot be disturbed during the breeding and roosting seasons. For swifts and swallows, this typically means March through August. For bats, the maternity roost season — when females gather to give birth and raise their young — runs from roughly May through August, and roosts are protected year-round regardless of whether they are currently occupied.
This is not a reason to avoid working on a building that hosts these animals. It is a reason to plan the work around the calendar rather than against it. Scaffold installation,initial investigations, and preparatory work that does not directly disturb nest or roost sites can often proceed during the sensitive season. The work that cannot proceed — opening up roof spaces, working directly on the areas where the animals are present — is planned for the appropriate window.
The autumn and winter months, after the swifts have left for Africa and before the bats’ spring emergence, are often the most practical period for work on roof areas and upper facade elements where protected species are present. This is another reason why autumn planning makes practical sense — it allows the timing of specific elements of the work to be coordinated with the natural calendar, without last-minute surprises that halt a project midway.
For anyone who is not certain whether their building hosts protected species, a survey before planning the work is a worthwhile investment. It removes uncertainty and allows the work to be properly sequenced from the start.
The neighbour effect
One more observation, from years of working on historic streets.
Facade restoration is contagious. When one building on a street is properly restored — when the scaffold comes down and the result is visible — neighbours notice. Some come to ask who did the work. Some begin thinking about their own building in a new way. Some commission work themselves within the following year.
If you are the owner who has just watched your neighbour’s facade restored, and you are now looking at your own building with fresh eyes, the instinct to act is healthy. The instinct to act immediately, without planning, is less so.
Use that moment of motivation to start the process — not to rush it. Make the calls, have the conversations, get the assessments. Let the planning begin now, so that the work can be done properly when the time comes.
In short
Inspect in autumn. Plan over winter. Commission in early spring. Work in the right season, with the right people, with the time the materials and the building require.
It is not complicated. It is just not how most people think about it — until they have been through one project that was rushed, and learned the difference.
The building has been waiting a hundred years. It can wait another few months for the right approach.
RestoreFacade Guild — for the craftspeople who plan ahead, and the owners who are learning to.