Mold Growth and Building Materials

Mold Growth and Building Materials

Experiments have shown that mold grows on the building materials in 4-10 days approximately. There are a lot of factors that determine the speed of mold growth on the building materials. Here we would discuss some of the key factors affecting the mold growth on building materials.

Type of the mold

The rate of growth of all molds is not same. Some molds grow at a high speed and other grow slowly. The best example is of ulocladium and stachybotrys. If there are same conditions of growth for both of them, ulocladium will grow fast as compared to the stachybotrys.


The optimal temperature for the mold growth in indoors is 25 °C. Molds grow faster at this temperature but mold growth can also occur on the temperature below 25 °C. A type of mold like cladosporium and penicillium can grow on wood even at low temperature of -5 °C. But at low temperatures the growth is very slow and spore germination occurs at 0 °C at least.

Water and Moist Activity

Mold grows in damp and moist conditions. So the water activity can become a major cause of the mold growth. Growth rate is optimal at 0.96-0.98 (for indoor molds). If the level of water activity can be reduced then the mold growth can also be reduced. Exceptions to this are eurotium, wallemia, penicillium and aspergillus. All these types of mold have capacity to grow at the lower levels of water activity. A slightly higher water activity is required for spore germination (as compared to that required for the growth of molds).

Spore’s Age

Younger spores require lesser time for germination and the old spores need more time for this.

Load of the Spore

If there are settled spores in the buildings then mold can grow fast.

Building Materials and their composition

The building materials that are composed of the plant materials are at high risk of fast growing molds. The best example is wallpaper on which the cellulolytic molds (like stachybotrys or chaetomium) can grow fast.

pH of building material

Rate of mold growth is strongly affected by the pH of the building material.

Nutrients for Mold

If the building material has excess nutrients for the molds then their growth can be very quick to avoid this call professionals like los angeles mold remediation.

Antimicrobial compounds

Building materials that have antimicrobial compounds are safe from quick mold growth because these compounds help to slow down the mold growth.



Leaky Roofs and Water Damage

Leaky Roofs and Water Damage

Water damage is not good for the homes and buildings. A major source of water is the leaky roofs. Whenever there are heavy rains, your roofs might start leaking and further water damage can be caused.  There are some steps to be carried out as soon as the leaky roofs are revealed. These steps are explained below,

Interior damage

Interior damage must be controlled as soon as possible. Save your items from the water damage.  Displace your furniture and other precious belongings so that water leakage cannot damage them. The items that cannot be displaced must be covered with a plastic sheet.  The dripping water must be collected in a bowl.

Water Removal

Now you have to remove the water that has soaked the furniture and carpets. The carpets must be dried by pulling that carpet away from the padding. In this way the chances of water damage to the carpet are reduced hence the mold growth does not occur. The air circulation in the leakage affected room is very necessary to let the things dry and avoid mold growth.

Insurance Agent

If the damage is severe then you must call your insurance agent. He better knows about the amount of damage and how to recover this water damage with the help of los angeles damage restoration services.

Inspection of the Roof

Now inspection of the roof should be the next step. Check where the water is pooling and damaging the roof. The gutters and the down spouts must be free of debris so that water can move freely. The inspection of the roof materials is also very important. Water leaking roofs must be inspected carefully because the leakage might travel and the exact location from where the water is coming.

Cleaning the gutters and down sprouts

The clogged down sprouts must be cleaned and the blockages must also be removed from them. Use a long brush to push away the debris from the pipes. The debris is responsible for the blockage and pooling of the water that causes roof leakage.

Hidden Damage to the Roof

Sometimes the roofs are damaged by water but the damage is unseen or hidden. You may not notice it at very first sight but this is equally damaging as compared to seen one. There are some symptoms that can alert you to inspect for a hidden water leakage.

Checking for the Pests

Ants love waters and whenever you observe any sudden invasion of ants in the roof then you should be cautious about the water damage presence.