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tuffbed High Performance Bedding Mortar

A high performance and pre-blended bedding mortar. Formulated for use as the laying course (bedding) for bound construction (rigid) pavements composed of natural stone or concrete paving units subject to pedestrian, through to heavy categories of trafficking. The pre-blended feature makes this product more convenient for smaller commercial or domestic scale projects.

Features and benefits:

  • Performance fully complies with BS 7533 Type A and Type B bedding mortar requirements, and in particular the requirement to be permeable and frost resistance when cured.
  • The permeability of the bedding mortar helps to prevent moisture related issues, including frost damage, structural failure, efflorescence, picture framing and organic staining.
  • Bedding depths of between 25–70 mm can be placed in a single layer, with greater depths achieved by placing successive layers. Consult manufacturer for details.

General information

Uniclass 2015

Pr_20_31_53_61 Paving laying course mortarsPrimary


M10/120 Fine concrete levelling screeds

M10/130 Proprietary quick drying levelling screeds

M10/180 Concrete wearing screeds (granolithic)

M10/195 Proprietary screeds to BS EN 13813

M10/7 Proprietary quick drying levelling screeds

Q24/10 Conventional concrete block paving

Q24/112 Conventional concrete block paving with bound base

Q24/122 Conventional clay paver paving with bound base

Q24/130 Natural stone sett paving

Q24/132 Natural stone sett paving with bound base

Q24/133 Natural stone sett paving overlay

Q24/30 Mortar bedded

Q24/385 Mortar bedded

Q25/110 Natural stone slab paving system

Q25/115 Natural stone slab paving overlay system

Q25/120 Concrete flag paving system

Q25/125 Concrete flag paving overlay system

Q25/130 Rigid brick paving system

Q25/135 Rigid brick paving overlay system

Q25/140 Natural stone sett paving system

Q25/145 Natural stone sett overlay paving system

Q25/150 Concrete sett paving system

Q25/155 Concrete sett paving overlay system

Q25/160 Natural stone cobble paving system

Q25/165 Natural stone cobble overlay paving system

Q25/26 Stone slab paving

Q25/31 Concrete flag paving

Q25/56 Stone cobble paving – bedding and jointing

Specification data - Paving laying course mortars

Product Reference

tuffbed High Performance Bedding Mortar

Mortar designation

Classification - BS 7533-7: 2010 C.2.1 and table C4 Type A and Type B compliant

Classification - BS 7533-7: 2010 C.2.1 and table C4 Type B compliant

Adhesive strength designation

2 N/mm² with tuffbond brush applied to underside of paving elements

2 N/mm² with tuffbond brush applied to underside of paving elements and to surface of concrete base or structural slab

Standard product features

Technical characteristics:

  • Working temperature: 2–30°C.
  • Typical compressive strength: 14 days at 20°C: ~25 N/mm²; 28 days at 20°C: ~35 N/mm².
  • Adhesive strength: ~1 N/mm² (without tuffbond): ~2 N/mm² (with tuffbond).
  • Flexural strength: 4.5 N/mm².
  • Modulus of elasticity: 14 000–18 000 N/mm² (application-dependent).
  • Permeability (to EN 12697-19): 2 x 10^-4 m/s.

- In accordance with EN 13813:2002:

  • Compressive strength: C35.
  • Flexural strength: F4 (4.5 N/mm²).
  • Reaction to fire: A1-fl.

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