આઉટડોર પોર્સેલિન ટાઇલ્સ — એન્ટી-સ્લિપ, હિમ-પ્રતિરોધક, 20 મિમી

બહારની ટાઇલ નક્કી કરતી ત્રણ બાબતો

સ્થળ પ્રમાણે લપસણ રેટિંગ

Slip resistance comes first, and it is measured wet, not dry. Almost any tile is safe dry. The R rating covers a ramp test with a lubricated surface: R10 is the minimum for a covered balcony, R11 is what belongs on an open terrace, an external step or a poolside, and R12 is for slopes and areas that stay wet. Specifying a polished tile outdoors because it looked good in a showroom is the single most common and most dangerous error in external tiling.

Frost resistance is the second, and it is really about water absorption. Water that soaks into a porous tile expands by roughly nine per cent when it freezes, and that expansion splits the tile from the inside. A body below 0.5 per cent absorption cannot take up enough water for this to happen, which is why porcelain survives European and North African winters where a ceramic tile would be destroyed in a season. In consistently warm markets this matters less — but the same density also keeps out staining and salt.

Thickness is the third, and it depends entirely on how the tile is supported. A tile bedded in adhesive on a sound concrete screed can be 9 or 10 mm, because the screed carries the load. A tile laid on pedestals over a roof deck, dry-laid on gravel or sand, or driven over by a car, has to carry the load itself — and that means 20 mm. A 20 mm porcelain paver will take a domestic vehicle, and has the useful property of being liftable later for access to whatever is underneath.

આઉટડોર અને આંગણ ટાઇલ્સ · સ્ટેપ અને રાઇઝર ટાઇલ્સ

Slip rating by location

Laying an outdoor floor that lasts

• Build in a fall — at least 1 in 80 away from the building. Water that cannot run off will find a way under the tile.
• Use an external-grade adhesive — C2 class, and butter both the tile and the bed so there are no voids for water to sit in.
• Leave movement joints — external slabs expand and contract far more than internal ones. A joint every 4 to 5 metres, and always at the perimeter.
• Grout with a flexible grout — a rigid cementitious grout will crack as the slab moves through the day.
• Do not lay over an untanked deck — tiles are not a waterproofing layer. Any roof terrace needs its own membrane underneath.
• Match the step tiles to the field — external steps should be ordered with the terrace so the shades match.

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