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Product Code: FBALL700

Ball Stopgap 700 Superflex - 20KG

£52.63
INC VAT
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Free pallet delivery unlocks at 20 bags For 1–19 bags, choose Click & Collect at checkout. A full-pallet option, where available, qualifies at quantity 1.
Order requirement 20+ individual bags Or one full-pallet option
Delivery aim 2–3 working days Subject to stock and eligible postcodes
Delivery method Kerbside pallet service Please ensure safe vehicle access
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Excluded postcode areas Free pallet delivery cannot currently be booked online for the areas below.
Postcode areas excluded from free pallet delivery
Area Excluded postcodes
North-east ScotlandAB31–AB45, AB51–AB56
Central & northern HighlandsFK19–FK21; all IV
Outer HebridesAll HS
Arran & CumbraeKA27–KA28
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Monday–Friday, 7:30am–4pm.
Unit 1 Penton Business Park, Stephenson Road, Salisbury, SP2 7NP.

F. Ball Stopgap 700 Superflex is a fast-drying, flexible, fibre reinforced smoothing compound specifically developed for levelling plywood, timber and other challenging subfloors before installing new floor coverings. Mixed simply with clean water, it delivers excellent flexibility, outstanding adhesion and a smooth, professional finish.

Using advanced cement and polymer technology, Stopgap 700 Superflex can be applied between 2mm and 10mm in a single application and is suitable for domestic and commercial flooring projects. Its rapid drying formulation allows most floor coverings to be installed from approximately 3 hours, making it an excellent choice for fast-track installations.

Why Choose F. Ball Stopgap 700 Superflex?

  • Specifically developed for plywood and timber subfloors.
  • Flexible fibre reinforced formulation helps accommodate slight subfloor movement.
  • Fast drying – ready to receive most floor coverings from approximately 3 hours.
  • Mixes with clean water – no latex bottle required.
  • Excellent self-smoothing properties.
  • Apply from 2mm to 10mm in one application.
  • Suitable for domestic and commercial flooring installations.
  • Marine approved to IMO standards.
  • Suitable beneath wood flooring, LVT, vinyl and carpet.

Ideal For

  • Plywood subfloors.
  • Timber subfloors.
  • Prepared concrete.
  • Sand and cement screeds.
  • Steel subfloors.
  • Raised access flooring systems.
  • Domestic flooring installations.
  • Commercial refurbishment projects.
  • Preparing floors before wood flooring, LVT, vinyl and carpet installation.

Professional Advice

Stopgap 700 Superflex is our preferred smoothing compound when preparing plywood and timber subfloors prior to installing engineered wood flooring, LVT and other resilient floor coverings. Its flexible fibre reinforced formulation helps accommodate slight movement within timber-based subfloors.

If repairs are required before levelling, use Stopgap 400 Repair for deeper repairs or Stopgap Micro Rapid for feather edging and smaller surface imperfections.

Technical Specifications

Product Type Flexible Fibre Reinforced Self-Smoothing Compound
Pack Size 20kg
Mixing Liquid Clean Water
Coverage Approximately 1.6kg/m² per mm thickness
Application Thickness 2–10mm
Working Time Approximately 20 minutes*
Walk-On Time Approximately 90 minutes*
Ready to Cover Approximately 3 hours*
Application Method Hand or pump application
Suitable Areas Internal domestic and commercial flooring installations.
Marine Approved Yes – IMO approved.

Prepare Your Subfloor Like a Professional

Correct preparation is essential for a smooth, durable and long-lasting flooring installation.

1. Check for Moisture

Test the subfloor before beginning. Where moisture control is required, select a suitable product from our Liquid DPM collection.

2. Select the Correct Primer

The correct primer depends on the substrate. Browse our range of F. Ball Primers and always follow the latest Technical Data Sheet.

3. Repair Damaged Areas

Use Stopgap Micro Rapid for feather edging and minor imperfections, or Stopgap 400 Repair for deeper holes, damaged screeds and localised repairs.

4. Choose the Right Levelling Compound

Stopgap Fast-Track 30 – Choose when speed is the priority.

Stopgap 1200 Pro – Ideal over suitable well-bonded adhesive residues.

Stopgap 300 HD – Heavy-duty smoothing compound for demanding applications.

Stopgap 700 Superflex – The preferred choice for plywood, timber and flexible subfloors.

Need Help Choosing?

Not sure whether Stopgap 700 Superflex is the right levelling compound for your project? Contact our flooring specialists with details of your subfloor, moisture readings and floor covering, and we'll recommend the best preparation system.

Important Information

  • For internal use only.
  • Subfloors must be sound, clean and correctly prepared.
  • Prime where required using the appropriate F. Ball primer.
  • Always follow the latest F. Ball Technical Data Sheet.
  • Drying times will vary depending on temperature, humidity and application thickness.

*Working, setting and drying times are based on approximately 20°C with good ventilation. Lower temperatures, increased humidity and thicker applications will extend drying times.