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How long is ONDULINE HR®  guarantee?
Onduline Avrasya gives written waterproofness guarantee for ONDULINE HR® sheets for a period of 10 years in case that the application is approved by our technical staff members and accessories of ONDULINE HR® are used. Different accessory usage makes the guarantee invalid.
Our company gives guarantee only for our product. The responsibility with regards to application belongs to the applicator.