The Two Details That Decide Whether a Composite Shake Roof Looks Real
Two composite shake roofs can carry the identical tile, the identical warranty, and look nothing alike from the driveway five years on. The difference is almost never the tile. It is the valleys and the rake edges, and it is decided on the estimate rather than on the roof.
Why two roofs with the same tile look different
Composite shake has gotten good enough that homeowners on the North Shore and in the northwest suburbs now choose it over real cedar on purpose rather than as a compromise. What surprises people is how differently two composite roofs can read from the street when both used the same product. We have looked at enough of them to say the tile is rarely the variable. The variable is what the contractor specified at the two places where a molded tile has to be cut or turned: the open valleys and the rake edges. Those two details are line items on an estimate, which means they are decided before anyone climbs a ladder, and they are the first things a rushed quote leaves out.
What is on the back of a composite tile
A composite shake tile is molded, not sawn. Manufacturers build structural ribbing into the underside so the piece stays flat and rigid across temperature swings without adding the weight of solid material. On the field of the roof nobody ever sees that backing, and it does not matter. It starts to matter the moment a tile is cut on an angle or hung past an edge, because the cut exposes the underside to the one viewing angle that counts, which is a person standing in the driveway looking up.
The valley: what a cut course exposes
In an open valley, every course runs into the valley on an angle and gets cut. Cut a standard field tile and the ribbed backing ends up looking straight down at the ground. From the roof it looks like nothing. From the front walk it reads as a stripe of something unfinished running down the most visible line on the roof. There are two honest ways to handle it. The first is a solid tile through the valley, made without the ribbing, which cuts cleanly and shows a solid edge. The second is to run standard field tile into a double-W metal flashing sized deliberately so the flashing conceals the cut edge. Both work and both are normal practice. What does not work is standard field tile cut into an open valley with nothing to hide the backing.
The rake: one inch, and what hides under it
Brava specifies a one inch overhang at the rake edge. That overhang is not decoration. It gives the edge a shadow line so the roof reads as a thick material rather than a laminate, and it keeps water off the fascia. It also means the underside of that tile is visible from below, which brings back the same question the valley raised. Solid tile at the rake solves it, and so does a D-style flashing turned to close the edge. Skip both and the rake is where a visitor's eye lands first, because a rake runs the full height of a gable and sits at eye level from the sidewalk.
Hip and ridge is the third place people cut corners
Hip and ridge pieces on a composite roof cost far more per linear foot than field tile, so a quote written to win on price tends to thin them out or substitute something that does not match. On a cut-up roof with long hips, that decision shows. It is worth asking any contractor how many linear feet of hip and ridge are in the quote and what product those pieces are, because that is a number that can be checked against the measurement report rather than taken on faith.
Why this is really a question about the estimate
None of the above is difficult to install. It is difficult to add after the fact, because solid valley and rake tile has to be ordered with the roof, and the flashing has to be fabricated to the right dimension before the crew is on the deck. That is why we treat these as spec decisions written into the scope of work rather than field judgment calls. It is also why two quotes on the same house, with the same tile name and a similar square count, can differ by real money and both be honest. One of them has the details in it.
What to ask before you sign anything
Four questions separate a quote that will age well from one that will not. Does the scope name solid tile or metal at the valleys and the rakes, or does it just give the tile name and a square count. What flashing metal is specified, in what gauge, and at which locations, because on a roof meant to last fifty years the flashing is what fails first. How many linear feet of hip and ridge are included and in what product. And who has installed this profile before, with an address we can drive by. Any contractor who is doing this properly can answer all four in a minute.
Slope, underlayment and waste, since they come up next
Composite shake is a steep-slope product. Four in twelve and up is standard. Three in twelve is the minimum and requires a full self-adhered underlayment rather than a synthetic felt, which is a cost and a spec worth confirming if any plane on the roof is shallow. On quantities, Brava's own project preparation guidance plans roughly ten percent waste on field tile and about fifteen percent on accessories for shake and slate profiles, and a cut-up roof with sixteen facets will sit at the top of that rather than the bottom. If a quote shows a waste factor near zero, someone is going to run short in the middle of the job.
Where composite shake belongs, and where it does not
It belongs on homes where the cedar look is the point and the maintenance is not wanted: the shaded lots where real cedar grows moss, the houses whose architecture was designed around a wood roof, and the properties where an architectural review board wants the original look preserved. It does not belong on every house. On a tract home with an asphalt roof and no cedar history, the premium buys curb appeal the neighborhood will not return at resale. We say that out loud on estimates, and we have talked owners out of it. Our comparison of the premium synthetics, including how they differ in texture and color palette, is in our synthetic slate comparison, and the cedar side of the decision is in cedar shake vs synthetic shake.
What we do about it
On every composite proposal we write, the valleys, the rake edges, the hip and ridge product and the flashing metal are named in the scope of work with the quantities behind them, so they can be compared line for line against any other bid. We will also walk a roof with you and point at the two details on an installed roof nearby, which is more convincing than any brochure. Leaders Roofing has worked on cedar, slate and composite roofs across the north and northwest suburbs since 1996. Call 708-847-5418 or request a free estimate, and we will bring full-size samples so you can see the back of the tile as well as the front. See also our warranties page for what a manufacturer warranty does and does not cover.