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Fast Delivery UK Mainland

Free Delivery on Full Pallets & Selected Lines

Collection by Appointment

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Next Day Delivery Available

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UltraCrete M45 Rapid Strength Bedding Mortar

£30.99£32.99 Ex. VAT - £37.19 Inc. VAT

UltraCrete M45 is a super rapid strength bedding mortar for use with all access covers and repairs to concrete roads. M45 also beds & profiles kerbs – it’s open to traffic in just 45 mins & conforms to HD27/04. M45 is workable for 5 – 10 minutes, sets in just 15 minutes and can be used on depths from 10 – 75mm.

UltraCrete M45 Rapid Strength Bedding Mortar – available as a 25kg bag or bucket

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Next Day Delivery available at checkout

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Delivery & Returns Info

Delivery is calculated on size & weight of order, charges displayed when added to basket. Small orders via courier, larger orders via Pallet Network (Click & Collect available call 0845 862 1099). Need further info, click here.

Weight Price Volume
0-25KG £8.001 bag / tub
25.01-50KG £16.00 2 x bags / tub
50.01-75KG £24.00 3 x bags / tub
75.01-100KG£32.004-5 bags /tubs
100.01-249 KG £38.00 5-9 bags / tubs
249.01-750KG £40.0010 bags plus
750.01KG + £30.00 30 bags plus
Full Pallets FOC* £0.0052 tubs / 56 bags
Premium Next Day Service+ £10 Click here for prices
Scotland Delivery Service Click here for prices
Local Delivery & Click & Collect: ☎️ 0845 862 1099

*Small additional charges may apply to certain parts of Scotland or areas with HGV Restrictions. Next Day delivery + £10 (*exc. apply)

Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for returning goods to The Paving Experts. Need further info, click here.

For any advice; technical, product, stock or quantity needed, call our team on 0845 862 1099.

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Slab Width

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Joint Width

Joint Depth


UltraCrete M45 Rapid Strength Bedding Mortar

Ultracrete M45 is a rapid strength bedding and repair mortar which is ideal for use with all access covers, emergency concrete road repairs, bedding and profiling of kerbs and tidal repair projects. This super fast setting mortar has a rapid strength gain and an excellent workable consistency. M45 conforms to HD27/04 and can be opened to traffic in just 45 minutes.

  • Workability: 5 – 10 minutes
  • Set Time: 15 minutes
  • Depth: 10mm – 75mm
  • 20N/mm² compressive strength in 45 minutes
  • Shrinkage compensated
  • Approved for use on the London Underground and Overground
  • Size: Choose from a 25kg bag or bucket


Technical information

  • M45 is supplied pre-blended in 25kg bags or plastic containers and requires only the addition of water.
  • The product can be used from 10mm-75mm in one pass, with greater depths possible using the layer-upon-layer method.
  • The product can be bulked out with the addition of up to 30% hard stone clean aggregate. Please note that this will reduce the products strength gain and alter its performance characteristics.
  • Store in closed original packaging at temperatures between 5°C and 30°C. Avoid Frost.

How to prepare M45

  • Surfaces should be free from any contamination of oil, grease, paint, etc.
  • Remove all loose particles and work on a sound substrate.
  • Pre-soak the area with clean water prior to application to aid bond.
  • Remove ponded water before applying the product.

How to mix M45

  • M45 can be mixed with a forced action mixer or by hand with an appropriate tool.
  • If hand mixing is used, ensure that it is vigorous.
  • 25kg of product will require approximately 3.3 litres of water.
  • A stiff consistent mix with no slump should be achieved, ensuring all particles are well wetted.
  • Mix only enough material to apply within 4 minutes.
  • Never remix or add extra water.

How to apply M45 Rapid Strength Bedding and Repair Mortar

  1. Apply the bedding material over a pre-soaked area.
  2. Once mixed, M45 should be applied to the supporting structure within 4 minutes.
  3. Firm well into position using a float and allow a 5mm excess thickness.
  4. Place the frame onto the bedding mortar, ensuring it is fully supported. Check that the frame does not overhang the mortar at any point (use suitable lifting equipment when positioning the frame).
  5. Care must be taken to prevent voids in the bedding material under the frame, especially in the cover seating area. The frame should then be tamped into place ensuring the correct level is obtained. Any holes within the frame should be in-filled and the flanges of the frame enveloped by a minimum thickness of 10mm of the bedding material.
  6. Exposed surfaces of the bedding material should be float finished, ensuring voids are filled.
  7. Remove loose materials and point the inside surface to a smooth finish.
  8. Once the bedding material has reached its initial set, the backfill material can be placed.


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