What warranty do roof tiles have?
Monier roof tiles come with a 50 year warranty. Please refer to terms and conditions of the warranty for details on the Warranties page.

What pitch can I put concrete roof tiles on?
It is recommended that concrete roof tiles are typically laid with a minimum pitch of 20 degrees for Hacienda tiles and a minimum pitch of 25 degrees for flat profile concrete tiles; however, consideration needs to be given to the rafter length, wind speed, terrain category and the tiles profile. Further information can be found in our architectural manual.

What is Sarking and what are the benefits?
Sarking is a flexible membrane that is laid under the roof battens during the installation of a new roof. Monier Roofing recommended the use of sarking for all new roofs irrespective of roof pitch, terrain category or prevailing wind speeds.

Benefits of using Sarking:

  • Provides added thermal insulation all year round
  • Stops condensation - minimising the chance of staining and mould growth on your ceilings
  • Effective dust barrier - reducing airborne dust entering your home
  • Provides additional weather protection

Can Concrete and Terracotta tiles be used in coastal environments?
Roof tiles are ideal for coastal locations that endure the wind, spray and salt of the ocean. All Monier concrete and terracotta roof tiles are salt safe and will not corrode over time. Terracotta is the ultimate roofing product in these conditions, given its performance and colour warranty of 50 years. Some other roofing products are not warranted if you live near the coast.

Tiles are ideal for coastal regions as they are suitable for the high salt content of marine environments. In the absence of rain, metal roofing may require hosing down in high salt concentration areas, which means extra maintenance, and can pose difficulties with water restrictions.

Roof tiles are a low maintenance option in coastal areas.

Is water collected off a concrete or terracotta tile roof safe to drink?
The raw materials used to manufacture concrete and terracotta tiles are non-toxic, so the water that runs off a tiled roof is potable, however, other factors including atmospheric fallout needs to be considered and the inclusion of a "first flush diverter system" is recommended.



Do concrete tiles fade?
Yes, the colour of your concrete tiles will fade and weather over time. This coating is purely decorative, and plays no role in any protective or waterproofing function. Over several years, the colour coating of your tiles may take on a more subdued, matt appearance because of the effects of air pollution and powerful UV rays from the sun. This change in appearance has no effect on the tiles performance or its structural adequacy. Terracotta tiles, however do not fade as the colour is baked into the tile.

Do concrete roof tiles become less porous as they age?
Concrete roof tiles like all concrete products become stronger and less porous over time, provided they were manufactured to the appropriate Aus/NZ Standard.

Does lichen growth affect the durability of concrete & terracotta roof tiles?
In some climates, moss and lichen can grow on your tiles. Whilst moss growth will not affect the water proofing performance of your tiles, it can obstruct the channeling of water down your roof. Therefore, Monier recommends the periodic cleaning of moss and lichen with a suitable commercially available cleaning product. (Always consider the environment when using chemical products)

Leaking roof?
Leaks are most often confined to small areas and usually occur as a result of one or more of the following problems:

  • Blocked gutters (including valley gutters) and downpipes. These should be cleaned out.
  • Cracked or broken cement mortar bedding to the ridge or hip capping. Capping should be re-bedded or re-pointed.
  • Cracked or broken roof tiles. Individual roof tiles should be replaced.
  • Roof tiles displaced. Displaced tiles should be put back in their proper position.
  • Blocked drainage channels under the ‘sidelaps’ of individual tiles. Any build up of dirt or debris should be removed.
  • Flashings blocked, damaged or displaced. These problems should be corrected.

If your roof has a leak, it is always best to employ an expert tradesperson to undertake the work for you, as accessing and walking on roofs can be dangerous.

What are the white marks on my roof? How can they be removed?
Occasionally, the natural salts within a concrete tile can migrate to the surface as a whitish grey discolouration called efflorescence or ‘bloom’. This has no effect on the performance of the tile. Although common to many concrete products, efflorescence does not always occur and should disappear naturally over time.

Can terracotta tiles be painted?
The painting of terracotta tiles is not recommended, however, unglazed terracotta tiles can be painted but once painted will require ongoing recoating.




Do tiled roofs require ongoing maintenance?
There is no such thing as no maintenance when it comes to roofs. Although your roof tiles are structurally guaranteed to perform their function for 50 years, there are still some things to look out for when it comes to caring for and maintaining your roof.

The number one maintenance issue is cleaning the gutters, downpipes and valleys of your roof. Gutters, downpipes and valleys can become easily built up with debris such as leaves and twigs from trees.

When gutters, downpipes and valleys become blocked, you get a build up of water that overflows back into your roof, which can create an enormous amount of water damage. This kind of build up also represents a potential fire hazard, as dry leaves and twigs are extremely combustible. This is easily preventable by a regular check to make sure your gutters, downpipes and valleys are free of debris. You should try to check and clean your roof at least once a year, twice if you live in a particularly tree lined area.

By regularly maintaining your roof you will go a long way to preventing any major problems occurring.


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