Shutters, Sap and Sixty Years of Paint: A Joiner's Diary from a Georgian Townhouse

The call came in late summer from the owner of a three-storey Georgian townhouse, one of a terrace of similar properties built around 1790. Six windows retained their original box shutters. Two of them no longer closed. One had been painted shut so many times that the leaves had become a single immovable slab. The owner had been advised, by more than one source, that replacement would be cheaper.

This is a diary of what we found, what we did, and where we drew the line.

Week one: the survey

Shutters of this period are rarely simple. They are housed within a box recessed into the window reveal, with the leaves folding back on brass or iron hinges and sliding on a track. Behind them sits the shutter box itself, frequently the source of trouble, and above them the architrave, which may or may not have been removed and refitted badly at some point in the last two centuries.

We surveyed each window individually, because a terrace built in one campaign is not necessarily a terrace built to one pattern. The two windows facing the street had shallower boxes than those at the rear, suggesting a later alteration. One rear window had shutters made from a different timber altogether — a not uncommon consequence of wartime repair or a Victorian refurbishment.

Initial findings were mixed but not discouraging. The leaves themselves were largely sound. The failures sat in the moving parts: hinges worn oval, tracks compressed by layers of paint, and in one instance a damaged stile where a leaf had been forced past its stop.

Reading the paint

Paint is evidence. A cross-section taken from a hidden edge of one leaf revealed at least eleven separate decorative schemes, from an early lead-based primer through to a modern acrylic applied some time after the millennium.

This matters for two reasons. First, thick paint is often the only thing holding a joint together, and stripping it can reveal movement that was already present. Second, the earlier layers may contain lead, which dictates how the work is carried out and how waste is handled. We test before we strip, without exception.

Stripping was done by hand and with controlled heat where the surface permitted, rather than by caustic dip. Dipping is quicker, but it can raise the grain, soften hide glue in adjacent joints and open seams that were previously tight. On original joinery, patience is not a virtue; it is a method.

Week three: matching the timber

Two stiles required replacement — one split along its length, another reduced to something resembling a sponge where water had sat behind a badly fitted sill.

The original leaves were in Scots pine, close-grained and fairly slow-grown, with the tight growth rings characteristic of timber from older, denser stands. Modern fast-grown pine is a different material: wider rings, softer earlywood, more movement. Using it without thought produces a repair that is visible within a season.

We sourced reclaimed pine of a comparable age from a demolition salvage yard in the Midlands, selected pieces with matching grain direction and density, and set them aside to acclimatise in the workshop for a fortnight before cutting. Matching is not only about species. It is about how the timber was grown, how it has dried, and how it will behave when the central heating comes on in October.

Week four: mortise-and-tenon repairs

The original joinery, as expected, is mortise-and-tenon throughout, with the occasionalDrawbored peg on the larger frames. Two joints had failed: one had opened along the shoulder, and another had a cracked mortise cheek caused, we suspect, by a hinge screw driven too close to the edge.

Where a joint is merely loose, the correct repair is to clean out the old glue, check the shoulders for bruising, and re-assemble with hot hide glue — reversible, strong, and appropriate to the period. Where the mortise cheek has cracked, the options narrow. We chose to insert a matching slip of pine, glued and pared flush, then re-cut the mortise. It is slower than drilling and plugging, and it preserves the original geometry, which is what the next custodian of these shutters will care about.

The cracked stile was replaced in full, with the new section jointed to the original using a scarf of sufficient length to carry the load. A short scarf looks neater in the workshop and fails in service; we cut ours generous.

Week five: restoration or replacement

We were asked, directly, whether replacement would be the better commercial decision. It is a fair question and one we answer honestly.

Replacement becomes the right answer when the box itself has rotted beyond economic repair, when a majority of leaves are unsalvageable, or when a previous alteration has destroyed the geometry so thoroughly that reinstating it would amount to building new shutters anyway. None of those conditions applied here.

Replacement is also the right answer when a property has already lost its originals and the owner wishes to reinstate shutters of appropriate design. We do this regularly, in accoya or tulipwood, with traditional proportions and modern hinge hardware where appropriate.

But where originals survive in reasonable condition, restoration almost always wins on both heritage and value grounds. Original shutters are part of the building's fabric. Once removed, they are gone, and a like-for-like replacement is expensive, often more so than repair. The economics and the conservation argument, in this instance, point the same way.

Week seven: finishing and rehanging

Finishing was deliberately restrained: a linseed-oil primer, two coats of an eggshell in an off-white sympathetic to the period palette, and no attempt to disguise the repairs. The shutters were rehung on refurbished original hinges, with new screws of appropriate gauge, and adjusted until each leaf closed with a light, even contact along its stop.

We also addressed the cause rather than the symptom. The sill behind one window had been repaired with a modern sealant that trapped water against the timber. It was replaced with a properly weathered sill and a traditional bead, which is unglamorous work and about a third of the cost of the shutters themselves, but the alternative was to return in five years.

Practical takeaways for heritage homeowners

If you own a period property with original shutters, three points are worth holding on to. Have them surveyed before assuming the worst; failure is usually in the hardware, the paint or the box, not the leaves. Insist on timber matching by species, grain and growth, not simply by name. And resist the temptation to strip everything at once — phased work allows the building to be observed between stages, which is how good restoration decisions are actually made.

Sixty years of paint, two split stiles and a handful of failed joints. Nothing here was unusual, and nothing was beyond repair. The shutters will outlast all of us, which is, in the end, the only standard worth applying.