2025 Pompeii Oven Build Log

[Gulf]

Some have used products that are normally used for underground basements. One, over here, goes by the brand name "Redgard". Similar products may be available to you. However, I still like some type of open roof over an oven. That seems to be a great way to save the looks of an igloo and still protect it from the elements.

[david s]

I use a product called “flexible pointing”, ( it may be called something else in different countries), which was developed to cover the mortar on tiled roof ridge caps. Because a tiled roof, just like an oven is subjected to continual expansion and contraction, the flexible pointing uses an extremely flexible acrylic and to achieve high build thickness, fine sand is also contained in the mix. Because it will also receive a lot of sun, there is plenty of UV protection also added to the product. It is fully waterproof, UV resistant and highly flexible so ticks all the boxes as a suitable product for WFOs. An old roofer told me that prior to its development in the 70’s roofers often had to re-mortar ridge caps to prevent roof leaks, but since it’s become industry standard, they never have to do those repairs.
As it is designed to be troweled on, for easier application I water it down 20% so it can be painted on in about 3 layers to achieve a thickness of around 1.5mm.

[yoboseyo]

I use a product called “flexible pointing”, ( it may be called something else in different countries), which was developed to cover the mortar on tiled roof ridge caps. Because a tiled roof, just like an oven is subjected to continual expansion and contraction, the flexible pointing uses an extremely flexible acrylic and to achieve high build thickness, fine sand is also contained in the mix. Because it will also receive a lot of sun, there is plenty of UV protection also added to the product. It is fully waterproof, UV resistant and highly flexible so ticks all the boxes as a suitable product for WFOs. An old roofer told me that prior to its development in the 70’s roofers often had to re-mortar ridge caps to prevent roof leaks, but since it’s become industry standard, they never have to do those repairs.
As it is designed to be troweled on, for easier application I water it down 20% so it can be painted on in about 3 layers to achieve a thickness of around 1.5mm.

would you use this as a primer layer on the dome? or over or under the primer - I'm tiling over it so it has to adhere?

what are your thoughts on waterproofing vs not water proofing? Are the water resistant layers enough and water proofing is a nice to have, or a must?

I'm in Australia (Canberra)