F Ball - Stopgap P131 (5kg) General Purpose Primer

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In stock
  • 2 items +    £57.96
  • 5 items +    £56.16
  • Available for Next Day Delivery
  • FREE Delivery when you spend over £125

F Ball - Stopgap P131 (5kg) General Purpose Primer

STOPGAP P131 is a primer designed to promote the adhesion of STOPGAP smoothing underlayments to smooth non-absorbent surfaces. It can also be used as a general purpose primer for absorbent surfaces to promote adhesion and to prevent unacceptably rapid drying of adhesives and smoothing underlayments.

It is suitable for use in marine applications as part of an IMO system. It is suitable for use over normal underfloor heating installations.

STOPGAP P131 is coloured green to provide the user with visual control of coverage uniformity.

STOPGAP P131 should be used on non-absorbent surfaces of STOPGAP waterproof surface membranes, terrazzo, power floated concrete, quarry and ceramic tiles, sound asphalt, epoxy marine primers, well bonded epoxy and polyurethane coatings and minimal existing adhesive residue. It should also be used on absorbent surfaces such as concrete, sand/cement screeds, plywood, hardboard and chipboard.

Additional Information:

  • Appearance: 5 litre bottle capacity
  • Colour: Green


The coverage rates will depend on the condition and absorbency of the subfloor.

5 litres neat *: 50m2 (max)
5 litres diluted (4:1)**: 100m2 (max)
5 litres diluted (7:1)***: 175m2 (max)

* Applied neat for non-absorbent surfaces.
** Applied diluted for internal absorbent surfaces.
*** Applied diluted for external and damp surfaces.

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

Drying Time:

This will vary depending on the temperature, humidity and absorbency of the subfloor. On absorbent subfloors, at 20°C, allow 20 to 30 minutes before proceeding with the application of STOPGAP smoothing underlayments or STYCCOBOND adhesives. On non-absorbent subfloors, at 20°C, this is typically extended to 60 minutes. These times will be extended at lower temperatures.


Avoid excessive trafficking of the subfloor once the primer has dried. When priming absorbent surfaces prior to the use of STOPGAP smoothing underlayments, particularly STOPGAP 800 WEARCOAT or 850 EXTERIOR, several applications may be required to reduce the incidence of pinholing.


Paint roller or soft brush. Wash tools with warm water immediately after use.


Store between 5ºC and 30ºC. Protect from frost.

Shelf Life:

12 months in unopened containers 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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