Clearance From Walls, Fences, Roofs and Plants

There's no single clearance figure for every pizza oven. Each maker sets its own, and the numbers vary a lot. Your manual's number is the one that counts.

Why the numbers don't match

Look at two makers and you get different answers.

One gas oven's guide asks for 680mm from the sides and back and 1500mm from the top.¹ The same page gives a separate figure for combustible material: 500mm from the back and the sides.¹ "Combustible" just means something that can burn, like wood siding, a fence or dry plants.

Another maker says its own ovens only need one inch of clearance to combustibles at the rear and sides.² Yet it also asks for at least 3 feet from overhangs and structures.²

These aren't errors. Ovens are built differently. A maker's figure applies to that maker's oven. Follow the manual for your exact oven and your local fire code.

A rule of thumb when the manual is silent

One site calls a 3-foot clear zone a practical operating baseline, but says the model manual and local requirements always take priority.³ Treat it as a starting point, not a pass.

If you can't find a figure for your oven, ask the maker. Don't guess from another brand's page.

Roofs, eaves and branches

Overhead matters as much as the sides. The National Fire Protection Association's grilling tips, written for grills, say to place the grill away from the home or deck railings, and out from under eaves and overhanging branches.⁴

Your manual and your local fire code set the gap you must keep, so check both before you light the oven. If the two figures differ, follow the larger one. If neither is clear to you, ask the maker or your local fire department before you cook.

So look up, not just sideways. Check for branches, a pergola, a low roof edge and a gutter full of leaves.

Local rules

Fire codes differ by place. One maker says to always check your local fire codes, as requirements can vary by region.² If your local rule asks for more room than the manual, follow the larger gap.

Children and pets

One manual says to keep children and pets away from the appliance at all times.¹ Plan the spot so there's no walkway right beside the oven.

What to do

• Open your manual and find the clearance figures before you pick a spot.
• Measure from the oven, not from where you're standing.
• Look at the fence, the roof edge, the plants and the branches above.
• If you can't meet the figures, move the oven. Don't squeeze it in.

What goes under the oven is covered on the surfaces page, and why it must stay in open air is on the outdoors-only page.