Aluminium Component
Under normal conditions the extruded aluminium sections are extremely durable, but the following should be taken into account when specifying:
• Aluminium is attacked by alkali in some mortars and plasters in wet conditions.
• Electrolytic corrosion is likely when in contact with some metals, particularly copper, copper alloys, iron and steel. Although it is not affected by most timbers, corrosion is very likely when in contact with wet timber, such as western red cedar, douglas fir and oak.

Brass Component
Extremely durable, brass is especially suitable for marine and very harsh conditions. When specifying it should be noted that brass forms electrolytic cells when in contact with other metals, particularly aluminium, zinc and steel, therefore, direct contact should be avoided. Natural oxidation of the brass surface will cause a dulling of the original bright mill finish. The profiles are supplied polished and can be hard chrome plated.

PVC Component
Extremely durable and unaffected by most chemicals in common use. The UP series of stair finishes are unaffected by insects and will not support the growth of fungi, moulds or bacteria, resistant to normal thermal loading and ultraviolet, however they are not recommended for use outdoors.

Installation
It is recommended to use a polychloropene type contact adhesive in conjunction with mechanical fasteners. Stainless steel screws must be used for exterior or wet installations. We supply all profiles pre-drilled for counter-sunk screws at 200mm centres. Ideally, damaged or badly worn steps should be repaired prior to fixing the Tredsafe stair finishes. When using a contact type adhesive to provide a firm bed it is important to depress the nosing into the adhesive beads then remove immediately, allowing for solvent evaporation. The Tredsafe stair finish is re-positioned and the screws then installed. Installation of the Diamondtred insert is achieved by removing the backing paper and then pressing firmly into the profile.

Dimensions