How to Judge a Stretched Canvas Before You Buy

A customer wrote to us this month about a dozen stretched canvases that let her down. She'd bought them on special — not from us — and the difference was obvious the moment she started working.

“The quality compared to the one I had ordered from you was far inferior. And yet on their site, they appeared to be the same.”

— K.C., Auckland art class

That last sentence is the whole problem, and it isn't really anyone's fault. A stretched canvas photographs as a white rectangle. Nearly everything that decides whether it's any good is invisible in the listing image.

So here's what to check instead. Five things, all of them usually printed on the product page if the seller is willing to tell you.

1. Canvas weight, in gsm

The most useful number, and the one most often left off a listing. Lighter cotton duck around 280gsm is made for lighter applications of paint — sketching, studies, learning work, anything you may paint over. Heavier canvas around 340gsm holds up to loaded brushes, palette knives and thick body acrylic without flexing under the pressure.

Neither is wrong. They're different jobs. But if a product page doesn't state the weight anywhere, that absence is information too.

2. How many coats of primer

“Primed” on its own tells you very little. Under-primed canvas drinks your paint, so your first layer goes into sealing the surface rather than onto the painting — an expensive way to buy gesso. Triple-primed is the standard worth looking for. Hold the canvas up to a window: if you can see clearly through the weave, it wants more.

3. The corners and the staples

Turn it over before you commit. Neatly folded corners with a single row of staples on the back means it was assembled with some care, and it means you can hang it unframed without staples showing down the sides. Bunched corners, or staples along the outside edge, usually mean speed — and that's the first thing to go slack.

4. Frame depth

A standard single-thick frame is light, cheap and completely fine, but it wants framing to look finished. A deeper 36mm gallery-wrap profile hangs straight off the easel with the painted edges doing the framing for you. The listing should tell you which one you're getting; if it only shows the front of the canvas, you can't know.

5. Whether it can be re-tensioned

Look for small wooden wedges — stretcher keys — tucked into the inside corners. They let you take up slack years later with a tap of a hammer. Their absence quietly tells you the maker didn't expect the canvas to need it.

What we stock, plainly

So you can hold us to the same five points:

• Signature Single Thick — 280gsm cotton duck, triple acrylic titanium primed, pine frame, back-stapled, wooden tightening wedges included. Mont Marte rate it for lighter applications of paint, and so do we: it's the right canvas for practice, NCEA folio exploration, paint-and-sip nights and learning work. It is not the one we'd pick for heavy impasto.
• Signature Double Thick — 340gsm acid-free cotton duck, triple primed, 36mm pine frame, gallery-style corners, single-row back-stapled, stretcher keys included. This is the finished-work canvas: commissions, exhibition pieces, anything you want to hang unframed.
• Canvas pads — 280gsm, acid-free, acrylic gesso primed. For studies and class work where stretched canvas is overkill.
• Canvas panels — 3mm board, acid-free, primed. Rigid, won't flex, ships and frames flat. Good for plein air and classrooms.

The double thick range isn't suitable for poster paint, gouache or watercolour — worth knowing before you order for a classroom.

The honest version of the lesson

Cheap canvas isn't a con. For sketching, colour studies, kids' painting or anything you'll paint over, it's exactly the right purchase, and we'd rather you spent the difference on better paint.

It stops being the right purchase the moment you care about the result lasting. That's a fair trade to make — the only bad version is making it by accident, because a photograph couldn't tell you which one you were buying.

Not sure which end of that you need? Email info@handymandy.co.nz. A real person in Morningside reads every message, and we'll happily tell you when the cheaper one is fine.

Buying for a class or a group? See School & Teacher Orders — we quote on bulk.