The short answer
Short answer: engineered MDF suits most dry rooms and costs least, hardwood is what you need for wide panels, tall spans and stained finishes, and ABS is the only sensible choice in a bathroom, wet room or a kitchen window that sits over a hob or sink.
- Lightest
- ABS, at roughly half the weight of hardwood
- Widest single panel
- Hardwood, up to about 900mm
- Lowest cost
- Engineered MDF
The three materials, on the things that matter
Every shutter range on the market is one of these three underneath the paint, whatever the brand name on the brochure. The differences are physical, not marketing.
- Engineered MDF with a wrapped polypropylene finish: stable indoors, excellent paint uniformity, heavier than ABS, not suitable where standing water or steam is routine
- Hardwood, usually paulownia or basswood: strongest per kilogram, takes a stain, allows the widest panels and the tallest spans, the most expensive
- ABS polymer: completely waterproof, will not swell, warp or rot, limited colour palette, restricted to narrower panels
Where each one belongs
In practice the room chooses the material for you more often than budget does. A bathroom window is an ABS job regardless of what you would prefer to spend, and a 2.6m tall stairwell window is a hardwood job regardless of what the cheapest quote says.
The grey area is the kitchen. A window on the far wall from the hob is fine in MDF. A window directly behind a sink, or within a metre of a gas hob, sees enough repeated moisture and heat cycling that we specify ABS.
Weight, span and why it matters at the hinge
Panel weight is not an abstraction, it is a load on three hinges and a frame fixed into your plaster. A wide MDF panel on a tall window will, over years, pull very slightly at the top hinge and start to catch on the frame. Hardwood carries that load better, which is why we use it above roughly 900mm of panel width or 2.2m of drop.
The reverse applies in a small bathroom, where an ABS panel light enough to swing on two hinges keeps the frame slim and avoids over fixing into tiled reveals.
Finish and colour by material
MDF gives the most consistent painted finish, because the wrap is applied under controlled conditions and there is no grain to raise. Hardwood is the only option if you want a stain or a natural timber look, and it takes a bespoke colour match well. ABS comes in a shorter list of whites and off whites, which is rarely a problem in the rooms it is used in.
All three carry the same 25 year movement warranty from us, because the warranty covers the panel staying true rather than the material it is made from.
Common questions
Is hardwood always better than MDF?
No. In a standard dry bedroom or living room window, an engineered MDF shutter is stable, looks identical from a metre away and costs less. Hardwood earns its money on wide, tall or stained work.
Will ABS shutters look plastic?
Not at normal viewing distance. The louvre profile and frame are the same shapes as the timber ranges, and the finish is matt rather than glossy.
Can I mix materials in one house?
Yes, and most whole house orders do. Bathrooms in ABS, everything else in MDF or hardwood, with the same louvre size and colour throughout so the house reads consistently.
Which material handles condensation best?
ABS, without qualification. It is the same reason it is used on boats and in wet rooms: water simply does not affect it.