F Ball - Stopgap 600 Base (25kg) Deep Section Compound

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In stock
  • 10 items +    £32.88
  • 25 items +    £31.87
  • Available for Next Day Delivery
  • FREE Delivery when you spend over £125

F Ball - Stopgap 600 Base (25kg) Deep Section Compound

STOPGAP 600 is a base compound designed for use where floor levels need to be raised quickly and economically in light to heavy-duty applications onto sound absorbent and non-absorbent subfloors.

STOPGAP 600 sets sufficiently in as little as 3 hours allowing it to be capped with STOPGAP Fast Track 30, 200, 300 or 1200 self-smoothing underlayments prior to the installation of new floorcoverings. STOPGAP 600 is also suitable for use under STOPGAP 800 Wearcoat. 

STOPGAP 600 is dimensionally stable and is supplied as a pre-blended dry powder, which is designed for application between 5-50mm in one application. It is protein-free which allows it to be used in biologically sensitive areas.

STOPGAP 600 is suitable for use over a wide range of subfloor types including sand/ cement screed, concrete, granolithic, terrazzo, epoxy and polyurethane resins, ceramic and quarry tiles and STOPGAP waterproof surface membranes.

Technical Information:

  • Appearance: 25kg Lined paper sack
  • Consumption per mm thickness: 1.81kg /m2
  • Working Time @ 20°C: 20 - 30 minutes
  • Walk on hardness time @ 20°C :3 hours
  • Ready to receive floor smoothing compounds: 3 hours
  • Coverage (approx.): A 25kg bag of STOPGAP 600 mixed with 4.25 litres of clean water will cover approximately 2.8m2 at a thickness of 5mm.
    Note: Coverage rates will depend on the condition and absorbency of the subfloor


Pour the mixed material onto the prepared subfloor and allow to flow and attain a smooth finish. Minimal work with a smoothing trowel is required. The mixed material should be applied at thicknesses between 5mm to 50mm in one application. 

For any areas under question please consult the F Ball Technical team.


Drying is dependent on the absorbency of the subfloor, ambient temperature and humidity.

Overcoating with Stopgap Fast Track 30, 200, 300, 800 or 1200:

Irrespective of thickness applied, once STOPGAP 600 has set, typically 3 hours at 20oC, it must be capped with a minimum 3mm of STOPGAP FAST TRACK 30, 200, 300 or 1200 depending on the performance characteristics required. If capping with STOPGAP 800, this should be applied at a minimum thickness of 5mm.This time will be extended with reduced temperatures i.e. approximately 6 hours at 10ºC. 

Where STOPGAP 600 is covered with STOPGAP FAST TRACK 30, 200, 300 or 800, prime the surface with dilute STOPGAP P131.

We would recommend the installation of floorcoverings be left for a minimum of 16 hours after STOPGAP 200 or STOPGAP 300 have set. STOPGAP 800 should be left for 24 hours prior to sealing with STOPGAP SEAL.

Please note: The working time of the smoothing compounds when applied to thick sections of STOPGAP 600 may be reduced, due to heat generated within the compound.


Suitable steel smoothing trowel, spiked roller, mixing bucket, electric drill and power whisk or suitable pumping equipment. Wash tools with water immediately after use.


This product must be stored under cover, in unopened bags clear of the ground in cool dry conditions, protected from frost and excessive draught. Dampness will reduce the shelf life and may cause the powder to set in the sack

Shelf Life:

6 months in unopened bags and stored under good conditions.

Delivery Information

We aim to dispatch all orders within 2 working day of receipt. Occasionally public holidays, weekends, weather events, or extremely busy periods may result in extended delivery times. In these circumstances, we will endeavour to communicate with you about the delay and resolve and resulting issues.

Please note that we do not make delivery date promises, however:

- Orders placed before 1pm on a weekday will be processed the same day.

- Orders placed after 1pm on a weekday will be processed the following morning. 

- Orders placed after 1pm on Thursday will be processed and dispatched the following day and out for delivery the following Monday (if Next Day Delivery is selected).

- Orders placed after 1pm on Fridays will be processed and dispatched on the following Monday.

For more information about our Shipping & Delivery services click HERE


UK Mainland Delivery Options:


Free Delivery: Applicable for orders of £125 excl. VAT and above
(Monday – Friday, excluding public holidays)


Collect From Store: 41 Markfield Road, London N15 4QA
(Monday – Friday, 9am–5pm excluding public holidays)


Standard Delivery: 3-5 Working Days
(Monday – Friday, excluding public holidays)


Express Delivery: Next Working Day
(Monday – Friday, excluding public holidays)

Out Of Zone Delivery Surcharges:

Isle of Wight

£12.50 per item (3-5 Working Days)

Isles of Scilly

£12.50 per item (3-5 Working Days)

Northern Ireland

£25.00 per item (3-5 Working Days)

Western Isles

£25.00 per item (3-5 Working Days)

Shetland Isles

£30.00 per item (3-5 Working Days)


£30.00 per item (3-5 Working Days)

Isle Of Man

£30.00 per item (3-5 Working Days)

Channel Islands

£30.00 per item

Republic of Ireland

Not Available


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