Unlike ‘Eterno’ pedestals which require five or six models of pedestals to cover elevations from 1″ to 10″ (approx.) and multiple extension elements to raise the height to 24″ or beyond, ‘Altitudes’ pedestals simply use precut lengths of PVC pipe secured to a polypropylene base and head component. Only four components (plus PVC pipe) are required to cover the range of 1 1/2″ to 24″.
‘Altitudes’ pedestals are particularly useful for high elevation decks where a single PVC pipe may offer additional stability and where the incremental cost is determined only by the length of PVC pipe, and not by the use of increasingly taller adjustable height pedestals or add-in extension elements.
At heights above 4 3/16″, a screw-to-adjust base can be used, offering incremental height adjustment up to 1/2″ (approx.) and giving some flexibility to compensate for incorrectly cut lengths of PVC pipe. However, at heights below 4 3/16″, the PVC pipe must be cut to the precise dimension, as the screw-to-adjust base cannot be used. Small adjustments can only be made by adding rubber shims to the pedestal head.
‘Altitudes’ pedestals can provide up to 5% slope compensation for uneven and sloping substrates and offer the unique ability to lock the pedestal head in a fixed position, which can be particularly beneficial in installations with lighter wood tiles.
In locations where wind uplift may be a concern, a hold-down washer can be inserted in kerfs cut in the corners of wood tiles and secured with a screw inserted into the head of the pedestals. A slot in the washer permits the washer to be moved clear of the kerf and enables any tile to be completely removed for replacement or to inspect the substrate below.
While ‘Altitudes’ pedestals were originally designed for use with wood tiles, and hence include heads with pre-installed pine tree fasteners which lock into the underside of compatible wood tiles, these pedestals are equally suited for use with porcelain and concrete pavers. Unwanted pine tree fasteners in the pedestal head can be easily removed with wire cutting pliers or a knife.