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Paving slab support

Paving slab support

Paving slab support

Product catalog summary
Overview: The document provides detailed information on the use of Alwitra paving slab supports, specifically the PA 20 plus model, for roof terraces and other paved areas. It includes design and installation recommendations, technical specifications, and benefits of using these supports.
Design and Installation Recommendations:
  • Roofs with regular traffic must comply with relevant standards and codes.
  • Paving slab supports should be used on stable, smooth substrates that can resist crushing, with paving lengths between 400 mm and 500 mm.
  • Paving on supports acts as ballast against wind uplift, and a protection layer is recommended to cover roofing membranes.
  • Non-flammable materials should be used for paving to comply with fire regulations, and insulation boards must have sufficient compressive strength.
  • Loose laid paviours should be secured against lateral movement, and perimeter details should prevent damage to waterproofing layers.
  • Additional measures may be needed to reduce sound transmission, especially for living areas below terraces.
Technical Specifications of PA 20 plus:
  • Material: Polyamide black, temperature-resistant from -40 to +100°C.
  • Base plate diameter: 150 mm, surface area: 175 cm².
  • Spacers: 4 per support, 6 mm joint width, 65 mm height.
  • Slab support: 4 per support, individually height adjustable from 35 to 55 mm, load capacity of 800 kg.
  • Tile spacer: 1 per support, 23.5 mm height, 6 mm thickness.
  • Impact sound improvement: Δ Lw,R = 28 dB.
  • Paving dimensions: 50 x 50 x ≥ 4 cm or 40 x 40 x ≥ 5 cm.
Installation Process:
  • Installation is simple and largely unaffected by weather conditions.
  • Start laying from outlets towards perimeters, securing against lateral movement.
  • Supports are placed beneath paving slab corners, with height adjustments available to compensate for tolerances.
  • Shims can be used for further leveling adjustments greater than 20 mm.
Benefits:
  • Allows for movement to prevent cracking due to thermal stress.
  • Ensures efficient drainage and prevents frost damage.
  • Provides sound insulation and avoids efflorescence on paving slabs.
  • Open construction allows for optimum air diffusion in inverted or duo-roofs.
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Catalog excerpts

Paving slab support-1

Paving slab supports PA 20 plus

 Open the catalog to page 1
Paving slab support-2

Roof terraces and other paved areas Choose alwitra paving slab supports and roof terraces and balconies can be covered reliably and efficiently. Design and Installation Recommendations • Roofs that are subjected to regular traffic must be designed and constructed in accordance with all relevant standards, regulations and Codes of Practice. • Paving slab supports should only be used on stable, smooth substrates sufficiently strong to resist crushing. Paving should have a minimum length of 400 mm and a maximum length of 500mm. • Paving on paving slab supports is suitable as ballast to provide resistance...

 Open the catalog to page 2
Paving slab support-3

alwitra paving slab supports are part of the proven alwitra roofing systems. Furthermore, these unique systems comprise: roofing and waterproofing membranes (thermoplastic membranes) – roof edge trims – wall cappings – wall flashing profiles – paint finishes – coated steel sheets – roof lights (including smoke venting systems) – rainwater outlets – flat roof vents alwitra is the expert when it comes to waterproofing flat and pitched roofs. With a system of integrated components and many years of experience and knowhow, we can offer perfect solutions for new build and roof refurbishment.

 Open the catalog to page 3
Paving slab support-4

Paving slab supports Paving or Tiles on terraces and balconies need to be installed with an allowance for movement. This will prevent cracking as a result of thermal stress. If cracks occur, water can enter and when “frozen” it can destroy the covering. This is also true of paving slabs or other types of hard walkways which are laid in cement or other mortar beds where purely surface drainage cannot be guaranteed. In these circumstances, subsequent damage can also occur to the waterproofing layer and flashings. Those risks can be avoided if the slabs are laid with open joints on alwitra paving...

 Open the catalog to page 4
Paving slab support-5

Shims: Technical data Paving slab supports PA 20 plus Technical data Material • Polyamide black • Temperature-resistant from -40 to +100°C Base plate • Diameter 150 mm • Surface 175 cm2 Spacers • Quantity 4 • Diameter (width of joint) 6 mm • Height 65 mm Slab support • Quantity 4 • Diameter 30 mm • Individually height adjustable by 20 mm, protected against reverse turning and overtightening, from 35 to 55 mm, preset on 40 mm • Load capacity 4 x 2 kN (800 kg) Tile spacer • Quantity 1 • Height 23.5 mm • Thickness 6 mm Impact sound improvement measurement Ä Lw,R = 28 dB Paving • 50 x 50 x 4 cm •...

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Paving slab support-6

Installation Laying paving slabs on alwitra paving slab supports is simple and largely unaffected by weather conditions. Once the roofing is completed loose lay: Protection layer (Fleece/Rubber Matting or other suitable material) Paving slab supports (with shims, if required) Paving slabs Tile spacers It is recommended that laying should start from the outlets towards the perimeters, cutting paving slabs, at the perimeters as required. The paving needs to be secured against lateral movement. Paving supports are located beneath the corners of the paving slabs and each slab is supported on every...

 Open the catalog to page 6

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.