Shutters Buying Guide: Louvre Sizes, Layout Options & What to Know Before You Buy

Interior shutters with adjustable louvres on a bright window

Plantation shutters are the most permanent thing you can put on a window. They mount into the frame, they become part of the architecture, they last decades, and they usually stay behind when the house is sold. That permanence is the appeal and it is also why the buying decision carries more weight than any other covering — a roller shade you regret gets replaced next season, and a shutter you regret gets lived with.

Almost all of the regret we see traces to four decisions made quickly at the start: louvre size, panel layout, material, and colour. None of them can be changed afterwards.

Table of Contents

The Short Answer

3.5-inch louvres, painted white, real wood in the dry rooms and composite anywhere damp. That specification suits more Ontario houses than any other and it is the one that ages best. Deviate from it deliberately, not by accident.

The one place we would talk you out of shutters altogether is a bedroom, and it is not about taste. Shutters do not black a room out, and no configuration of them will.

What Makes Shutters Different

Blinds and shades are accessories. Shutters are joinery. The brackets go into the window frame, the panels stay with the house, and the effect on a room is closer to what trim or built-in cabinetry does than to anything else sold as a window covering. That is the whole case for them — and the whole case against, because taste moves and shutters do not. The upfront cost is higher than any alternative, and so is the cost of changing your mind.

Louvre Size

Louvre width runs from about 2.5 to 4.5 inches, and it decides three things at once: how much you can see out when the louvres are open, how finely the shutter controls light, and whether the shutter looks the right size for the window it is in.

LouvreReads asView when openSuits
2.5 in.Traditional, fine-detailedMost obstructedSmall windows, bathrooms, period houses
3 in.Traditional but lighterModerateSmaller bedrooms, cottage-scale rooms
3.5 in.The middle ground — contemporary without being starkGoodMost main-floor windows; the default we recommend
4.5 in.Modern, clean, few linesBestPicture windows, great rooms, high ceilings

The error worth avoiding is scale, not style: a 4.5-inch louvre on a small bathroom window looks oversized, and a 2.5-inch louvre across a great room looks fussy. Match the louvre to the window and either aesthetic works.

Panel Layout

Panels have to fold against each other or stack cleanly when open, which means the layout is a function of the opening and not a preference.

  • 30 to 36 inches wide — a single pair of panels meeting in the middle.
  • 36 to 60 inches — two panels with a centre stile, the vertical divider that carries the load.
  • Wider than that — multiple panels, sometimes with a centre stile for structure. This is why shutters span openings no shade can.
  • Tall windows — add a divider rail so the top and bottom halves tilt independently. It is the single most useful option on the list: privacy below, daylight above, no compromise.

Awkward Shapes, and What They Add

Rectangular openings are the cheapest and the simplest. Arches, octagons and angled tops have to be custom-shaped and add 30 to 60 percent. Bays need coordinated panels across each section plus angled brackets at the corners. Patio doors need a bypass or bifold system to handle the width and the traffic through it. All of it is possible; none of it should be worked out after the order is placed.

Wood or Composite

Real wood (basswood, poplar)Composite (PVC, MDF, hybrid)
LookThe most authentic; takes paint and stain beautifullyVery close in painted white; grain is where it shows
HumidityWarps and discoloursHandles it
WeightHeavierLighter
Cost20 to 40 percent moreThe value option
Where it goesLiving rooms, dining rooms, dry bedroomsBathrooms, kitchens, basements, laundry

Most houses with shutters throughout end up with both, and it is the right answer rather than a compromise — wood where it is seen and dry, composite where the humidity would destroy it. Matched in the same white, nobody standing in the room can tell which is which.

What Shutters Do That Nothing Else Does

  • Filtered light with street-level privacy — louvres open horizontally, and people cannot see in from the sidewalk.
  • Light bounced off the ceiling — louvres angled up, for ambient light with no glare.
  • The whole window back — panels folded flat against the wall. No shade gives you this.

And the honest limitation, which is the reason we turn shutter enquiries away for certain rooms: shutters do not blackout. Light comes around the panel edges and through the louvre gaps no matter how tightly they are closed. In a bedroom — particularly an east-facing one — that is a real failure, and the right answer there is a blackout shade even in a house that is otherwise shuttered throughout. Window Coverings for Privacy vs Light Control covers where that line falls room by room.

On Large Windows

Shutters scale where shades stop. A 10-foot picture window takes three or four panels and still reads as one architectural element, and they fold back flat when you want the glass. Past the point where a roller or cellular shade runs out of rated span, shutters go from being the expensive option to being the practical one. Best Window Coverings for Large Windows has the spans.

Coordinating With the Floor

Painted white shutters work against everything — traditional rooms with rich hardwood, transitional rooms with engineered, modern rooms over vinyl plank or tile. That is most of why white is the default and most of why it ages well.

Stained shutters are a different proposition and need real care. Matched too closely to the floor they flatten the room; pulled the wrong way on undertone — warm shutters over a cool grey floor — they read as a mistake. How to Match Window Coverings with Flooring works through the undertone question properly, and it is worth doing before a stain is chosen rather than after.

Louvre width is impossible to judge from a photograph and obvious the second you stand in front of two panels. Book an appointment and look through a 3.5 and a 4.5 before committing to twenty years of one of them.

What They Cost, and Why Most People Phase Them

Standard openings run $400 to $900 per window installed. Large windows and complex configurations run $1,500 to $2,500 or more per opening, and a whole detached home in shutters throughout reaches well into five figures. That is enough above every alternative that phasing is the norm rather than the exception — front-facing main-floor windows first, dining and formal living rooms next, and other coverings in the rooms nobody but the family sees.

What justifies the premium where it is spent is duration. Twenty-five years or more of service life puts the cost per year below products that look cheaper on the invoice, they are valued by buyers and named in listings, and they change how a room feels in a way an accessory does not. How Much Do Window Coverings Cost in Ontario sets those figures against everything else.

Before You Place the Order

  1. Start with the windows that are seen daily — main floor, front-facing. The architectural payback is there and nowhere else.
  2. Settle louvre size against window size, not against a photograph of somebody else's house.
  3. Fix the full layout — panels, stiles, divider rails — before anything is manufactured.
  4. Wood dry, composite damp, matched in one colour so the mix disappears.
  5. Allow 6 to 10 weeks from order to installation. Shutters are made to your openings and the lead time is longer than any other covering.

A few other guides connected to this topic:

Want Help Choosing the Right Shutters for Your Home?

The best way to choose what's right for your home is to see the options side by side. Book an in-store appointment at one of our 17 Ontario showrooms and one of our consultants will walk you through what fits your space, your needs, and your budget — or request an in-home visit if that's easier.

Frequently Asked Questions

How long do plantation shutters last?

Twenty to thirty years and often longer. Hinges and tilt mechanisms want an occasional adjustment across that time; the panels themselves simply keep going. It is why they usually stay with the house at sale instead of coming off the windows.

Do shutters add value to a home?

Generally, yes. Agents name them in listings, the rooms photograph better, and buyers read them as architectural detail rather than as decor. Recovery on the spend varies with the market and is most reliable in mid-range and upper-range homes.

Can I install shutters in my bathroom?

Yes, in composite. Real wood in a bathroom will warp or discolour and it is not a question of if. Painted white composite is close enough in appearance that the difference is invisible from anywhere in the room.

How long do shutters take to manufacture and install?

Six to ten weeks from order to installation — longer than any other covering, because every panel is made to your opening. The fitting itself is usually a single day for a whole house.