Hot Weather and High MVER
Article by: Fred Gray, LATICRETE Australia Technical Service Manager
It is normally this time of the year that
we issue high temperature alerts and warn of their effects on tile installation
systems. Summer time is also that time of year where external backgrounds or
substrates are frequently subjected to the effects of high humidity and
inundation in combination with high temperatures.
These conditions can be very
problematic when it comes to the installation of moisture sensitive tiles and membranes
due to the likely occurrence of wet substrates and high Moisture Vapour
Emission Rates (MVER).
In these conditions, when curing membranes are applied over substrates with higher than desirable moisture conditions, they can lock in moisture under the membrane. When this moisture is subsequently heated due to hot site conditions, it can cause vapour bubbles to form under the membrane with the capacity to debond the membrane from the substrate as it is curing. The excessive MVER condition will continue to be problematic unless it is controlled.
Moisture blocking coatings can control the MVER to levels that is safe for membranes. They still release moisture and allow substrates and backgrounds to breath but at a rate that does not cause a problem for the membrane. When these conditions are present or likely to be present, moisture blocking coatings like LATAPOXY® Moisture Shield will help you get on with the job. Click here for the Product Data Sheet on LATAPOXY® Moisture Shield.
In these conditions, when curing membranes are applied over substrates with higher than desirable moisture conditions, they can lock in moisture under the membrane. When this moisture is subsequently heated due to hot site conditions, it can cause vapour bubbles to form under the membrane with the capacity to debond the membrane from the substrate as it is curing. The excessive MVER condition will continue to be problematic unless it is controlled.
Moisture blocking coatings can control the MVER to levels that is safe for membranes. They still release moisture and allow substrates and backgrounds to breath but at a rate that does not cause a problem for the membrane. When these conditions are present or likely to be present, moisture blocking coatings like LATAPOXY® Moisture Shield will help you get on with the job. Click here for the Product Data Sheet on LATAPOXY® Moisture Shield.
For more information or for Technical Support call 1800 331 012 or email: sales@laticrete.com.au to arrange a demo or a FREE sample
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