Softwashing in hot weather
Dealing with "boil-off" on a hot day is an important and skillful facet of effective softwashing.
And a summer heatwave brings several challenges, one of which is the change it makes to the chemical properties of softwash cleaning products.High temperatures make both Benz Lightning Cleanze and Benz Bio Cleanze more reactive (i.e. increases their strength). So it’s a good idea to reduce the dilution on very hot days.
On most jobs there will be elevations that are cooler than others. If this is this case then it can be best to use the softwash chemical at normal strength on the cool elevations; and pre-wet the hotter elevations, which will effectively reduce the dilution.
Pre-wetting surfaces that are very hot is a useful way of cooling them down, as well as reducing the dilution of the softwash chemical. In conditions of extreme heat, when rapid boil-off can be a serious problem, it may also be advisable to have someone pre-wetting the surface just prior to treating it.
Pre-wetting – and if a very hot day, repeated wetting during application - both cools the surface and allows your softwash chemicals a longer activation time, increasing their effectiveness.
Work small areas at a time is another excellent strategy for coping with boil-off.
- And also, whenever possible, apply on cooler days (the weather forecast, particularly for the day ahead, is a lot more accurate now than it used to be) and cooler times of the day – i.e. early morning and late afternoon.
- When applying Lightning Cleanze, a useful approach can be to first apply at half strength then gradually increase the strength as real-time experience indicates.
It’s the same when we have to cope with "boil-off" on roofs, i.e. treat at half the strength and apply twice. Having softwash cleaning chemicals boil straight off a hot roof is not going to help them work.
We hope you found this information helpful and inspires you to succeed in your softwashing business.
Ben, Leo & Fiona
PS: No two jobs are the same, so, as always, treat a test patch first and proceed with intelligent care.
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