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Huge Discounts On Bulk Orders – Call 0845 862 1099 For A Bespoke Quote.

Huge Discounts On Bulk Orders – Call 0845 862 1099 For A Bespoke Quote.

Fast Delivery UK Mainland

Free Delivery on Full Pallets & Selected Lines

Collection by Appointment

Open Mon-Fri

Next Day Delivery Available

Pallet Deal Larsen SLC 1550 x 50 Bags

£722.05 Ex. VAT - £866.46 Inc. VAT

Our best price on a full pallet of 50, 20KG bags of Larsen Professional SLC 1550. Larsen Professional SLC 1550 Flex is a fast drying, hand or pump-applied, cement-based, self levelling flooring screed which covers applications up to 50mm in one pass. SLC 1550 is ideal for underfloor heating or as a surface preparation for tiles, timber flooring, carpet, natural stone in factories, schools, offices & hospitals.

Single pack | Self-levelling | Up to 50mm in one pass | Fast drying | Apply finishes in 24-72 hours | Foot traffic in 2 – 4 hours | BS EN 13813 CT – C30 – F7

Packaging: 20kg multi-wall paper sacks

Coverage: 20kg will cover approximately 3m2 @ 5mm

Call ☎️  0845 862 1099 for more trade deals or to place an order! Smaller quantities available here: 

In stock

Get it from Wed 29th. Jun - Fri 1st. Jul Estimated delivery date, click here for info
Next Day Delivery available at checkout
Please see our FAQ’s for more information.

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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Larsen SLC 1550 Self Levelling Flooring Screed

Buy a Full Pallet of 50 x 25KG bags of Larsen SLC 1550 Self Levelling Flooring Screed and Save!

Professional SLC 1550 FLEX is a single pack, fast-drying, universal renovation screed with fiberflex microfibre technology.

SLC 1550 Flex is manufactured from a controlled blend of special sands, cements and synthetic polymers to provide a high quality flooring product which is self-levelling and smoothing. Perfect for use in fast track domestic and commercial situations, such as, where levelling of up to 50mm is required or for use over underfloor heating and on more difficult substrates, e.g. timber. It does not provide a wearing finish but provides an ideal surface to receive resilient floor finishes including: carpet, natural stone, ceramic tiles, vinyl, resin coatings, etc.

Larsen SLC 1550 Flex will cover 3-50mm in one application, can receive foot traffic in 2-4 hours, full traffic after 1-2 Days, and full and final coverings after 1-3 Days. Perfect for offices, dwellings, schools, hospitals, airports, etc.

Technical Information:

  • Full Pallet Deal: 50 x 25KG bags
  • Single pack
  • Self-levelling
  • 3-50mm in one application
  • Fast drying
  • Protein-free
  • FiberflexTM Technology
  • Foot traffic in 2-4 hours | Full Traffic 1-2 Days | Covering 1-3 Days
  • BS EN 13813 CT–C25–F7
  • Packaging: 20kg multi-wall paper sacks
  • Coverage: 20kg will cover approximately 3m2 @ 5mm

How do I prepare to apply Larsen SLC 1550?

The building should be weather-tight prior to the application of any screed materials. The roof, external doors and windows must be in place, closed or covered, and they must be taped to prevent any draughts. The substrate must be structurally sound concrete or screed and must be thoroughly clean, dry, and free from dirt, debris or dust which may impair adhesion. Suitable mechanical preparation of substrate may be required. Air and substrate temperatures must be greater than 5oC. Relative Humidity value of the floor must be less than 75% when moisture sensitive finishes are to be laid onto the SLC 1550.

Do I need to prime or use a DPM ahead of applying SLC 1550?

Normal concrete and screed requires priming with an acrylic primer, diluted 1:1 with clean water. For particularly porous concrete and screed, we recommend priming with an acrylic primer diluted 1:1 with clean water followed by another coat of acrylic primer applied neat. Please note that if the relative humidity value of the floor is greater than 75%, Larsen DPM should be used. Apply two coats of DPM as directed with the dry sand (0.7 -1.2mm) scatter into the wet second coat at a rate of 2 kg/m2 (with the excess removed by vacuuming). For thickness of >25mm or heavy traffic areas, ring us for advice.

How do I mix Larsen SLC 1550?

  1. Simply add 3.75 to 4.25 litres of clean water to a bucket
  2. Add a 20kg bag of SLC 1550
  3. Mix with a heavy duty drill and paddle for 1-2 minutes or with a suitable continuous mixer-pump.
Important: Do not add more than 4.25 litres of water for each 25KG bag, as excess water will cause a loss of strength in the product.

How do I apply Larsen SLC 1550?

Once the required consistency of SLC 1550 is achieved, pour or pump apply the mixed product over the sub-floor. SLC 1550 will self-level into smooth finish. Where necessary, release any air bubbles in the product with a trowel or spiked roller, this must be carried out within 5 – 10 minutes of application. SLC 1550 can be applied up to 50mm (min 3mm when pumping). Once applied the screed must be protected from draughts for the the first 6 hours to allow the SLC 1550 to cure, we always advise taping up doorways and windows with polythene. After the 6 hour period, then ensure the room has sufficient ventilation to allow the screed to fully dry out. SLC 1500 can receive foot traffic after 2 - 4 hours, and floor coverings can be installed after 24 - 72 hours depending on thickness of SLC 1550, substrate and site conditions. If any trowel marks remain, remove with a wet trowel after 1-1½hrs.


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