I dropped my pencil into the mud. It was a thick, flat carpenter pencil with red paint, and it landed lead-down in a puddle behind the rear tire of the work truck. I reached for it, but the conversation at the tailgate kept me stooped.

Three men stood there, eating sandwiches off the plastic bed liner. Between them, they had 87 years of experience in the trades. They were currently arguing about a gap of an eighth of an inch.

The man from Michigan said you always leave the gap at the butt joints. He spoke about Michigan winters and the way the board grows when the sun hits it in July. The man from Georgia shook his head. He said the humidity in the South is the real killer.

The Three Philosophies of the Puddle

He claimed that if you leave a gap, the moisture gets into the end grain, and then you have rot within four years. He said you butt them tight. The third man, who learned the trade from a father-in-law who had since retired to a trailer in Florida, said they were both wrong. He said you leave the gap, but you fill it with a specific brand of caulk that he hasn’t been able to find in stores since 2011.

The wall behind them was already half-finished. It had been fastened using the Georgia method because the lead installer that day happened to be the guy who feared the humidity. If the Michigan guy had shown up ten minutes earlier, the house would have a different set of rules.

In my old life as a game balancer, this would be called a “broken mechanic.” If three players enter a dungeon and the rules of physics change based on which player reached the door first, the game is unplayable. You cannot win a game where the gravity is a matter of opinion.

Yet, in the world of exterior cladding, this is not seen as a failure of the system. We call it craftsmanship. We take the undocumented variation of local lineages and we give it a name that sounds like a virtue. We do this because we have no choice.

There is no National College of Siding. There is no central hall of records where the “Correct Way” is kept under glass. There is only the guy who taught you, the guy who taught him, and the specific mistakes they made that eventually became sacred rules.

The Engineering of “Proprietary Methods”

When a trade teaches itself, it does not converge on a single truth. It drifts. It works like the game of telephone, where a whisper starts as “use a galvanized nail” and ends three decades later as “only use a hammer with a wooden handle on Tuesdays.”

“This drift is hidden behind the word ‘craftsmanship.’ If an installer does something differently than the guy on the next street, he isn’t ‘wrong.’ He is ‘experienced.'”

He has a “proprietary method.” He has “seen things you haven’t seen.” This is a shield. It protects the installer from being measured against a standard. If there is no standard, there can be no error. If there is no error, the work is always art.

But a house is not a poem. A house is a machine that sits in the rain and tries to stay dry. It is a thermodynamic puzzle. When we treat the assembly of that machine as an oral tradition rather than an engineering task, we lose the ability to predict how long the machine will last.

I have seen walls where the installer followed the “Tight Butt” rule of 1984, only to have the boards buckle and pop off the house because the material was a modern composite that didn’t behave like the cedar he used in his youth.

The installer didn’t blame his method. He blamed the material. He said the “new stuff” wasn’t as good as the “old stuff.” He ignored the fact that he was trying to apply 18th-century folklore to a 21st-century chemical compound.

The problem is that the trade has no memory beyond the living. If the guy who knows the trick dies, the trick is lost. Or worse, the trick is remembered incorrectly. In my work with game systems, we call this “technical debt.”

You build a solution that works for a week, and then you forget why you did it. Ten years later, that solution is a legacy bug that crashes the whole system. In construction, technical debt is a rotting sill plate or a warped facade.

The Architecture of Constraints

This is why the industry is moving toward systems that remove the need for folklore. If you use a material like

Composite Siding,

you are not just buying a board. You are buying a set of constraints.

The material is a wood polymer composite. It is engineered to be a certain density. It has a specific coefficient of expansion. It does not care about what a father-in-law said in a garage in 1994.

It has a shiplap profile that dictates exactly how the boards overlap. It removes the “art” of the gap and replaces it with the “math” of the fit. When the material has the rules built into its shape, the installer can go back to being a builder instead of a philosopher.

He doesn’t have to guess if he should use a Graphite Charcoal Gray or an Arctic Oak finish; he just has to follow the line. The SlatSolution system, for instance, offers ten different finishes, including Peruvian Teak and Brazilian IPE.

These are not just colors. They are finished surfaces that do not need the “local secret” of a specific stain or a hidden caulk. They are designed to resist the very things-moisture, rot, insects-that the three men at the tailgate were arguing about.

The folklore becomes irrelevant because the problem it was meant to solve has been engineered out of existence. The fastener that holds the board is the same steel that forces the joint to buckle.

The Guild and the Experiment

We cling to the idea of “the trade” as a mysterious guild because it gives us a sense of identity. We like the idea that we know something the average person doesn’t. But true craftsmanship is not the ability to memorize a secret.

It is the ability to execute a result that is repeatable. If I build a house today, and a different crew builds the same house next door tomorrow, those two houses should perform identically. If they don’t, we haven’t built a house; we’ve conducted an experiment.

I remember a project in 2016 where the contractor insisted on “back-priming” every single board of a composite system. He spent 14 hours and $430 on primer that the manufacturer explicitly said was not needed. He did it because “that’s how you do a quality job.”

He was applying a solution for 1950s pine to a 2016 polymer. He thought he was being a craftsman. In reality, he was just being expensive. He was adding friction to a system that was designed to be smooth.

This is the “difficulty balancer” in me talking: we need to stop making the game harder than it has to be. Construction is already hard. The weather is a chaotic player. The soil shifts. The wind loads change.

We do not need to add more variables by letting every installer bring his own “local wisdom” to the fastener spacing. We need the boards to work. We need the Arctic Oak to stay Arctic Oak and the Weathered Teak to stay Weathered Teak without a 20-year maintenance cycle.

The shift toward engineered systems like SlatSolution is a move away from the “unmeasurable variation” that plagues the industry. When the board has a clean overlapping profile, the “craft” is found in the layout and the precision of the cuts, not in the guesswork of the fasteners.

It allows a specifier to carry one material across a wall and a soffit with total confidence. It turns the site from a theater of conflicting opinions into a place of assembly.

I eventually found my pencil. It was ruined. The lead was soft from the water and the wood had swelled. I threw it in the trash and went to find a pen. It reminded me that even the simplest tools fail when the environment changes.

The trades are the same. The old tools of “that’s how I was taught” are failing because the environments-and the materials-have changed. We are building faster, in weirder climates, with more complex demands. We cannot rely on oral tradition to keep the rain out.

We need to stop calling the lack of a standard “art.” We need to stop calling the drift of knowledge “wisdom.” Real craftsmanship is the humility to follow a proven system so that the homeowner doesn’t have to wonder which “lineage” built their bedroom wall.

The trade should teach itself, yes. But it should teach itself from the manual, not from a story told over a sandwich on a Tuesday afternoon.

When we remove the folklore, we don’t lose the soul of the work. We just lose the rot. We lose the callbacks. We lose the 1/8th-inch arguments that don’t actually matter when the material is designed to handle the load.

We gain a building that lasts longer than the man who built it. And that, in the end, is the only definition of craftsmanship that matters.