F Ball - F21 (5kg) Styccobond Wood Block Flooring Adhesive

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In stock
F Ball - F21 (5ltr)
  • 2 items +    £27.86
  • 5 items +    £26.40
  • Available for Next Day Delivery
  • FREE Delivery when you spend over £100

F Ball - F21 (5kg) Styccobond Wood Block Flooring Adhesive

STYCCOBOND F21 is a high temperature grade bitumen/rubber emulsion adhesive designed for application by dipping. It is non-flammable, protected against biodegradation and is suitable for use over normal underfloor heating installations.

STYCCOBOND F21 can be used for securing individual wood blocks at least 12mm thick, made from a wide variety of woods.

STYCCOBOND F21 can be applied to STOPGAP smoothing underlayments, structurally sound, smooth, dry, absorbent subfloors of concrete and sand/cement screed and plywood (minimum 6mm flooring grade WBP).

STOPGAP Waterproof Surface Membranes, sound asphalt and other non-absorbent surfaces must be skimmed with a minimum of 3mm of the appropriate STOPGAP smoothing underlayment.

Technical Information:

  • Appearance: Viscous Liquid
  • Colour: Black
  • Coverage Rates (approx.): 1m2 per kg/ 5m2 per 5kg tub. 
  • Note: Coverage rates will depend on the condition and absorbency of the subfloor
  • Open Time: Up to 30 minutes depending on temperature, humidity and absorbency of the subfloor.


Stir thoroughly and then pour into a shallow pan. Dip the bottom face of each block into the adhesive and place into position immediately. Setting begins at once and foot traffic can be allowed after one hour. When setting a head row, STYCCOBOND F33 Rapid Set Polyurethane Adhesive is recommended.
The open time of the adhesive is dependent on temperature, humidity and absorbency of the subfloor.

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


Do not dip the blocks too deeply as this can cause staining at the joints. Do not commence finishing operations until at least 24 hours after laying. Be careful not to get adhesive on the surface of the blocks. Any contamination that does occur should be removed immediately with a wet cloth. If any adhesive should dry on the surface it can be removed by the careful use of white spirit.


Shallow pan to act as a reservoir for the adhesive and into which the blocks are dipped. Tools should be cleaned with water while the adhesive is still wet.


Store between 5°C and 30°C. Protect from frost.

Shelf Life:

12 months in unopened containers 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 £100 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