Month: February 2021

Disadvantages of Decramastic Roofing

Fixing or replacing a roof is a huge investment therefore it is crucial that you are aware of your options. Although asphalt shingles are the most common material used they may not be your best option. Asphalt shingles are heavy, they transfer heat into the home, and are susceptible to heat damage, algae/moss, and mold.

When replacing a roof there are several factors involved in deciding which is the best route for you:

  1. Longevity- how long will it last?
  2.  Durability- will it hold up to the area’s weather?
  3. Weight- Can the structure withstand the weight?
  4. Aesthetics— Will it enhance the look of your home? and
  5. Codes- Will the local municipal regulations approve it?

If you are thinking of Decramastic Roof, according to roofingrepairsnorthshore.nz Here are some factors to consider:

Decramastic roofs are pressed steel tiles. They are known to leak, resulting in water damage in a home’s roof cavity and ceilings. This is caused by age, hail, and foot traffic. These roofs usually display chip loss, base coat damage, moss/lichen growth, and corrosion.

They are made by stamping the substrate then hand dipping each tile for the galvanizing process followed by electroplating layers of zinc for corrosion resistance.


The coatings of these roofs are inadvertently damaged in the process of installation. Being soft the bitumen is damaged easily by foot traffic, having tools dropped on it, and through rough handling. Lichen and moss growth causes damage by the root systems eating the bitumen material exposing the metal to the elements. Occasionally paint is applied but bitumen contracts and expands with changes in temperature. Paint cannot expand and contract to leave it to crack and flake.