Materials and ratings
Curb appeal upgrades: one spec sheet where siding colour, profile and trim agree
A house looks coherent from the street when six documents agree with each other: the siding order, the trim take-off, the window order, the door order, the list for soffit and fascia (the underside and outer edge of the roof overhang) and the sealant schedule. Getting them to agree is a one-page exercise, and it happens before anything is ordered or it does not happen at all.
One page, and it decides everything downstream
The reason exterior projects end up looking almost right is rarely taste. It is that decisions get made in the order the suppliers ask for them rather than in the order they constrain each other, so the windows are ordered in week two and the siding colour is chosen in week six against a frame colour nobody can change.
The fix is a single sheet, written at the measure visit, carrying every line that has to agree:
- Cladding line, profile, exposure and colour code, and whether the colour is factory-applied or field-painted
- Trim material, thickness and width, at corners, at openings and at the rake
- Corner treatment: corner boards, mitred corners, or woven
- Window line, series, exterior frame colour, interior finish and glass package
- Door slab, frame and finish, and whether it is being matched to the windows or set against them deliberately
- Soffit, fascia and any vented panel, with its own colour code
- Gutter and downpipe colour, which is usually chosen by somebody else entirely
- Sealant colours, by joint, and flashing finish where it will be visible
Every one of those has a supplier, a lead time and a point past which it cannot be changed. The sheet exists so those points are visible at the start.
Profile before colour, every time
Profile is the decision colour has to live with, and it is chosen first because it cannot be adjusted later without re-ordering the wall.
Exposure is the number that changes the scale of a house
Lap siding is specified by its exposure: the height of board actually visible once each course laps the one below. A narrow exposure gives more shadow lines across an elevation and reads busier and smaller-scaled; a wide exposure gives fewer, heavier lines and reads calmer and larger. The same colour on the same house looks like a different building at the two ends of that range.
Exposure also interacts with the openings. Course lines that land awkwardly at a window head or sill are visible from the street forever, so on a house with a lot of glass it is worth setting the starter course so the courses break sensibly against the largest openings rather than from whatever the foundation offers.
Vertical panels change the substrate conversation
Board and batten is not lap turned ninety degrees. Battens are spaced to a module, the module usually wants to relate to the framing, and vertical cladding frequently needs furring so the assembly can drain and dry behind the panel. That is a structural and moisture decision made at the same moment as an aesthetic one, which is why it belongs on the spec sheet rather than in a conversation about swatches.
What the factory fixes permanently, and what you can still change
The single most useful thing to understand about exterior colour is which decisions are reversible.
| Material | How it is coloured | Changing it later |
|---|---|---|
| Vinyl | Pigment moulded through the extrusion or through a co-extruded cap layer | Not practical. There is no coating to recoat, and painting vinyl introduces the expansion problem it was formulated to avoid |
| Fiber cement, primed | Factory primer, painted on site after installation | Fully repaintable. The widest palette of the three, and the maintenance cycle that goes with it |
| Fiber cement, factory finish | Factory-applied colour in a controlled line | Repaintable, but repainting generally moves the finish out of the factory warranty. Palette limited to the range offered |
| Engineered wood | Primed for field paint, or a factory finish depending on the product | Repaintable; check what the factory finish warranty says before recoating |
That table is why profile comes before colour on a vinyl job and why the reverse is survivable on a primed fiber cement job. If the palette matters more than anything else to you, that is an argument for a paintable substrate, made in week one rather than discovered in month three.
Sheen is a specification, not a preference
Higher sheen reflects more directional light, so it shows every plane irregularity in the wall behind it: a crowned stud, a proud sheathing seam, a patch. Lower sheen scatters that light and hides the same wall. On a re-clad over old framing, sheen does more for how flat the wall looks than any amount of care with the panels.
The trim package is where colour schemes actually succeed
Trim does three jobs at once: it terminates the cladding, protects an edge, and draws the line your eye reads from the street. Specifying it as an afterthought is why so many otherwise good colour choices look thin.
Thickness has to beat the siding profile
Trim needs to stand proud of the cladding it terminates, or the siding butts into it and the joint reads as a seam rather than an edge. Trim thickness is therefore selected against the profile: a heavier lap or a battened wall needs a thicker board than a fine lap does. It is a dimension, not a taste call, and it is the one to check on a drawing before the order goes in.
Three materials, three maintenance stories
- Cellular PVC trim. Does not rot, takes paint, moves noticeably with temperature so fastening and joint detail matter. The default at ground contact and anywhere that stays damp.
- Fiber cement trim. Matches the cladding's movement and texture, holds paint well, heavier to handle and cut.
- Engineered wood trim. Lighter, longer lengths, wants the same cut-end sealing discipline the siding does.
Corners are a decision, not a default
Corner boards give a defined vertical line and a durable termination. Mitred corners read cleaner and are far less forgiving of movement and out-of-square framing. On an older house nowhere near square, corner boards are usually the honest answer. The other place trim decides the outcome is where new cladding meets something that is staying (a stucco return, a stone base, an existing chimney), and that casing width is a measurement taken at the sheet stage.
Putting a combination together without guessing
We are installers rather than colour consultants, so the rules we work to are the mechanical ones.
- Start from what is not changing. The roof, any stone or brick, and the paving are fixed points. A scheme that fights the roof colour loses.
- Set the value contrast between body and trim deliberately. Low contrast reads calm and makes a house look larger; high contrast draws the eye to the geometry of the openings. Pick one on purpose.
- Check a dark body against the substrate's rating. Dark colours absorb more, and on some products the dark range carries its own installation and warranty conditions.
- Sample on the actual wall, not on a chip. A sample board of real product, held on the elevation it will live on, looked at in morning light, at midday and at four in the afternoon. Colour on a west wall at sunset is a different colour.
- Decide the window frame colour against the trim, not the body. The frame is read as part of the opening, and the trim is what surrounds it.
Where colour and profile choices land by material is set out on our siding page, and window frame finishes on our window page.
The order confirmation is the spec sheet checked twice
When the orders come back, they get read against the sheet line by line before anything is released for production. The lines that matter:
- The colour code on each order, character for character, not the name. Marketing names repeat across ranges; codes do not.
- Whether the cladding and the trim are coming from the same production run, when they are meant to match rather than contrast.
- The profile and exposure as ordered, against the sheet.
- Accessory colours: corner posts, J-channel, starter, soffit and vented panel, each of which is ordered separately and each of which can silently arrive in the nearest stocked shade.
- Window frame colour inside and out, glass package and grid pattern per opening.
- Sealant colours against the joints they are going into.
Two closing pieces of housekeeping. Keep the leftover material rather than letting it go on the truck: a matched offcut is what makes a repair invisible in year eight. And file the sheet with the warranty documents, because the next person to work on this house will need it.
Colour, profile and trim
Questions that decide an exterior scheme
They do not, and on most houses they should not. Siding, window frames, trim and soffit are made by different manufacturers with different colour systems, so an exact match across all four is rarely available and rarely the goal. The workable approach is to decide which elements are meant to match and which are meant to contrast, then match only within each group and check every code on the order confirmation.
It depends on the substrate. Cellular PVC, primed fiber cement and primed engineered wood are all designed to be painted and repainted. A factory-finished product can be repainted too, but doing so generally moves the finish outside the factory warranty, and vinyl trim is not a candidate at all because there is no coating to recoat.
Enough to make a future repair invisible, and it should stay with the house rather than leaving on the truck. Colour varies slightly between production runs, so an offcut from the original order is a better match than anything bought years later. A few full lengths of each profile, a length of each trim size and any leftover accessory pieces is the practical answer.
Next step
Bring us the roof colour and we will write the sheet with you
The spec sheet is a measure-visit exercise. We look at what is staying, take the dimensions the trim decisions depend on, and put the profile, exposure, colour codes and trim package on one page before anything is ordered. When the orders come back, we check each one against the sheet, line by line, before it is released.
Prefer to talk it through? The shop line is (775) 391-8487, Monday to Friday, 9:00 AM to 4:00 PM.
- Profile and exposure set against the openings, not against the foundation
- Colour codes recorded per element and checked on the order confirmation
- Trim thickness dimensioned against the cladding profile
Request a free estimate
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We will call you back on the number you gave us to set a measure visit. If you would rather talk now, the shop line is (775) 391-8487, Monday to Friday, 9:00 AM to 4:00 PM.