Pizza Oven Insulation Guide – Calculator, Materials & Buying Guide

Building a wood-fired pizza oven? One of the most common questions is how much insulation you need. Use the calculator below to estimate ceramic fibre blanket for the dome and calcium silicate board for the base.

PIZZA OVEN INSULATION CALCULATOR

Calculate Your Pizza Oven Insulation Requirements

This calculator is for dome-shaped outdoor wood-fired ovens only. Enter your external dome diameter and external dome height in millimetres to estimate how much ceramic fibre blanket and calcium silicate board you may need.

Important: Blanket is calculated using a 610 mm wide roll. Calcium silicate board quantity is based on boards sized 1000 mm × 610 mm × 25 mm.

External dome diameter (mm)

External dome height (mm)

Enter dimensions in millimetres. Update the values and click Calculate again to test another oven size.

Working with flat surfaces instead?
For fireplaces, wall linings, kiln insulation and other flat surface applications, use our Calcium Silicate Board Calculator .

PIZZA OVEN INSULATION MATERIALS

Ceramic Fibre Blanket & Calcium Silicate Board for Dome Oven Builds

Commonly used together in wood-fired pizza oven construction, ceramic fibre blanket provides dome insulation while calcium silicate board creates a stable, heat-resistant base beneath the oven floor.

Durablanket ceramic fibre insulating blanket roll for high-temperature thermal insulation rated to 1260 °C, available in multiple thicknesses and densities

Durablanket Ceramic Fibre Blanket – 1260°C (Fiberfrax) General Purpose Industrial Insulation

Stacked calcium silicate thermal insulation boards 25 mm × 610 mm × 1000 mm rated to 1000 °C for industrial high-temperature applications

Calcium Silicate Board Rigid insulation for furnaces, kilns & wood-fired pizza ovens

Handling & Cutting Advice: Ceramic fibre blanket can be itchy to handle and may release fine fibres when cut. Wear gloves and a suitable mask to minimise irritation. For clean, accurate cuts, we recommend using a sharp Stanley knife.

PIZZA OVEN INSULATION FAQS

Common questions about insulating a wood-fired pizza oven

A few practical answers to help you estimate materials and compare common insulation approaches for pizza oven builds.

How much ceramic fibre blanket do I need for my pizza oven?

Use the calculator above to estimate the blanket required based on your external dome diameter and external dome height. The result gives you the calculated blanket coverage in linear metres based on a 610 mm wide roll.

How much calcium silicate board do I need?

The calculator estimates the floor area of your oven base and shows both the board area required and the number of 1000 mm × 610 mm × 25 mm boards needed.

Is 25 mm ceramic fibre blanket enough for a pizza oven?

A single layer of 25 mm ceramic fibre blanket is a commonly used starting point for pizza oven insulation. Some builds use two layers of 25 mm blanket where additional insulation and heat retention are desired.

Should I use one layer or two layers of 25 mm blanket?

Both approaches are used depending on the oven design and the level of insulation you are aiming for. The calculator shows the blanket required for one layer, and if you plan to use two 25 mm layers, you can double that amount to estimate total blanket required.

How is ceramic fibre blanket supplied?

For pizza oven projects, the most commonly used option is:

25 mm – available by the metre or 7.32 m roll

Does the calculator tell me exactly what insulation thickness to use?

No. The calculator estimates the material quantity required based on the dimensions entered. Customers should confirm the most suitable insulation thickness and build method for their own oven design, application and performance requirements.

How do I cut ceramic fibre blanket?

Ceramic fibre blanket can be cut cleanly with a sharp Stanley knife. When handling and cutting the blanket, we recommend wearing gloves and a suitable mask, as the material can be itchy to handle and may release fine fibres when cut.

Does the calculator work for all pizza oven shapes?

This calculator is intended for dome-shaped outdoor wood-fired ovens only. Results are based on dome geometry and should be used as an estimating guide.

Are the calculator results exact?

The calculator provides a practical estimate based on the dimensions entered. Actual material required may vary depending on wall thickness, entry design, overlaps, trimming and installation method.

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