1- SURFACE PREPARATION

o Ensure the roof to be treated has a minimum of 1: 100 drainage fall to a suitably sized outlet.

o All substrates must be sound, stable and free of dust, dirt, oil and any other contaminants which may impair adhesion.

o Mineral substrates must exhibit a smooth absorbent surtace profle, any spaled or damaged
Surfaces must be repaired using a suitable Dr. Fixit Repair material.

o Metal roofs must be tree ot rust and all txings must be securely tightened. All gaps between overiappng metal panels must be sealed using a suitable approved acrylic sealant.

o All penetrations through the root such as pipework or ducting must be sealed usinga suitable approved Sealant or expanding foam filler.

o Ensure detailing work is carried out on seams, splits, protrusions, fixings, drains, flashings, fasteners