Will rain affect my roof treatment?

Will rain affect my roof treatment?

Rain in the forecast? Find out when roof treatments need to be rescheduled and what happens if it rains after your treatment.
October 21, 2026
Blast Away Guys technician applying roof treatment to a black house roof in Whangārei

Roof treatments cannot be applied in rain or high winds. If the weather prevents us from treating your roof, we may need to reschedule. If it rains 15 minutes after we have applied your treatment, that is okay. The product has had enough time to absorb and begin working.

Booked a roof treatment with Blast Away Guys and watching the forecast? Here is what to expect before and after your appointment.

Will you still come if rain is forecast?

We keep a close eye on the forecast before your roof treatment. We cannot apply the treatment in rain or high winds, so the conditions may mean your appointment needs to move.

A forecast can change. If you are unsure whether your booking will go ahead, contact us and we can talk it through.

What if it rains after my roof has been treated?

Rain 15 minutes after application is okay. By then, the product has had enough time to absorb and begin working.

This advice applies to our roof treatment service. If you have a question about the timing of rain after your visit, give us a call.

What happens if my treatment needs to be rescheduled?

We will keep you informed, aim to give you as much notice as possible and work with you to find another suitable time.

If the forecast continues to change, we may need to reschedule again. We know that can be inconvenient. Our team monitors conditions to minimise disruption and keep you updated.

Is this guidance for roof washing too?

This page covers roof treatment. Roof washing is a different service. Read about our roof treatments and roof washing, or contact us if you are unsure which service is in your booking.

How else should I prepare for your visit?

Our exterior cleaning preparation guide covers access, windows, water supply and plants. Follow the preparation instructions in your booking email as well.

Questions about your roof treatment booking?

Call 027 238 8738 or email info@blastawayguys.co.nz. We are happy to talk through the weather and what it means for your appointment.

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