Can you replace just one mock Tudor board?

Yes, and usually you should. The boards are fixed individually, so a single failed board can be taken off and a new one fitted without disturbing the ones around it. The hard part is not the fitting, it is finding a replacement that matches the rest — width, thickness, colour and grain all have to be close enough that the eye does not pick out the new one. Replacing a whole frontage because one board has failed is an expensive way of solving a matching problem.

What is mock Tudor boarding made of?

On modern estate houses it varies. Older ones are often timber. Many are MDF or a composite board, and a lot of newer work is uPVC. The board on this job turned out to be MDF, which is why it had failed the way it had — MDF has no resistance to water at all once the coating is breached, and it swells and distorts rather than simply rotting. uPVC is the usual replacement now because it does not take up water.

Why does mock Tudor boarding bow or come away from the wall?

Water, nearly always. Rain runs down the face of the render and collects on the top edge of any horizontal board in its path. The lowest horizontal board on a frontage gets the most of it, because it catches everything coming off the whole panel above. Once water gets into the board, an MDF or composite board swells, distorts and pulls against its fixings, and eventually the ends lift away from the uprights they butt into.

Do you need scaffolding to repair Tudor boarding?

For anything at first-floor level, yes — proper access rather than a ladder. You need both hands free to hold a five metre board to a line while you fix it, and you need to be able to stand back and look at it. A scaffold tower also lets you inspect the boards either side while you are up there, which is worth doing since they have had the same weather as the one that failed.

Does replacing Tudor boarding need planning permission?

Replacing a failed board like for like on an ordinary house is repair and maintenance, so permission is not normally involved. It is a different question if the property is listed, in a conservation area, or if you are changing the appearance rather than putting back what was there. If any of those apply, check with the local planning authority before starting.

Mock Tudor Boarding Repair in Castleford

Mock-Tudor frontage in Whitwood, Castleford after the failed lower board was replaced — The finished frontage. The board along the render-to-brick junction is the new one.

The owner of this house in Whitwood, Castleford had spent days trying to find somebody who would take the job on. Not because it was difficult, but because it was small — one board, at first-floor level, on a modern estate house.

The bottom horizontal board of the mock-Tudor frontage had distorted and pulled away from the upright it butted into. Everything else was sound. The job was to replace that one board and match it to the rest, rather than re-board the whole elevation.

Mock-Tudor boarded frontage with cream render panels above brickwork before the board was replaced — The frontage as we found it. The failed board runs along the bottom of the render, where it meets the brick.

Why the lowest board is always the one that fails

Look at how the frontage is put together and the reason becomes obvious.

The render panels sit between the black boards. When it rains, water runs down the face of that render and has to go somewhere. Every horizontal board in its path catches some of it — and the lowest one, the board sitting on the junction between the rendered first floor and the brickwork below, catches everything coming off the whole panel above it.

So that board spends its life wet along the top edge. Whatever it is made of, it is the one that goes first.

What had actually gone wrong

The original board turned out to be MDF. That matters, because MDF and water do not coexist. Once the coating is breached anywhere — a fixing hole, a cut end, a split in the paint film — water gets into the board and it swells. It does not rot in the way timber rots; it distorts.

Close-up of a bowed mock-Tudor board pulled away from the vertical board leaving a visible gap — The bow along the board, and the right-hand end lifted clear of the upright it should butt into.

That photograph shows both symptoms at once. The board has dished along its length, and the right-hand end has pulled away from the vertical board beside it, leaving a gap. Once a board starts moving like that it works against its own fixings, and the gap only opens further.

Finding a board that matched

This was the part of the job that took the time, and it is the part most people underestimate.

The existing board measured 15mm thick. Matching a board is not just a question of colour — the width, the thickness and the grain pattern all have to be close, because the new one is going to sit directly against boards that have been there since the house was built.

The board chosen was a Swish C540Z Black Ash woodgrain uPVC Tudor board, 150mm wide and 20mm thick, in a 5 metre length. uPVC rather than MDF, because the replacement should not fail the same way the original did.

The owners quite reasonably wanted to see it before committing, so rather than ordering on the strength of a website photograph we waited for a physical sample to arrive so they could hold it against the existing boarding and decide for themselves. The board was ordered once they were happy with it.

That is not a delay worth apologising for. A board that is nearly right is worse than no board at all, because it draws the eye to exactly the spot you were trying to make disappear.

Fitting the new board

Failed mock-Tudor board removed from the render-to-brick junction, with scaffold tower access — The failed board off, with the line it had been fixed to still visible along the junction.

The failed board came off without disturbing the uprights or the backing behind it, and the new one was cut and fitted to the existing layout.

One detail was worth thinking about. The replacement is 20mm thick against the original 15mm, so where it meets the vertical boards it would stand proud by 5mm and the junction would read wrong. The answer is to rebate the concealed back of the new board locally at those junctions, taking it down to roughly the original thickness where it matters and leaving the full 20mm everywhere else. The face lines up, and the extra thickness is still there doing its job along the run.

It is screw-fixed with black covers, with provision for movement — uPVC expands and contracts more than timber does, and a board fixed solid at every point will eventually buckle rather than move.

The work was at first-floor level, so it was done off a scaffold tower rather than a ladder, which also gave the chance to look over the neighbouring boards while up there.

Mock-Tudor boarding and render panels on the gable of a house in Whitwood, Castleford — The boarding runs the full gable. Only the lowest horizontal board needed doing.

Why the whole frontage did not need replacing

There is a version of this job where somebody looks at a distorted board on a first-floor elevation, quotes to re-board the entire frontage, and everybody accepts it because matching one board sounds harder than replacing all of them.

It is harder. It is also a fraction of the work, a fraction of the disruption, and it leaves a house that still looks like itself.

The same thinking runs through everything here — keep what is sound, replace what has actually failed, and take the time to make the new work sit properly against the old. It is the same judgement as a rotten window rail or a repair-or-replace decision on period joinery, just on a modern house with a uPVC board instead of a piece of oak.

If you want the wider version of that argument, repair or replace sets out how the call gets made, and our cladding and panelling and maintenance and repairs pages cover the kind of work this sits alongside.

Mock Tudor boarding repairs in Castleford and Wakefield

This one was in Whitwood, Castleford. Heritage Joiners takes on mock-Tudor board replacement, cladding repairs, fascia and exterior timber work across Castleford, Wakefield, Pontefract, Normanton and the wider West Yorkshire area, including the small jobs other people will not turn out for.

If you have got a board that has bowed, split or come away, send Rob a photo — the whole elevation and a close-up of the failed board — and he will tell you whether it is one board or something wider.