Classic Liquid Primer 4ltr - Coverage 25sq.m


UK Flat Roofing





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Classic Liquid Primer 4ltr - Coverage 25sq.m

£84.30 (inc VAT) £70.25 (ex VAT)


Classic Liquid Primer 4ltr - Coverage 25sq.m


inc. VAT

Ex VAT £11.50


Upto 20 Years

  Same day dispatch if ordered before 12pm


The ClassicLiquid Primer is a rapid curing polyurethane liquid membrane designed for overlaying existing roofing systems to create a durable and seamless waterproof layer.

This 4 Litre ClassicLiquid Primer is a single component polyurethane primer and can be applied to many different substrates both porous and non porous and must be used prior to the use of ClassicLiquid Top Coats & Detailer.

Coverage rates will vary based on the existing roof porosity between 0.1 litres to 0.3 litres per square metre. Typically a semi porous surface will require 0.2 Litres / sqm meaning that this 4 litre tin will cover approximately 20 square metres.

Primeable Surfaces

Built Up Felt
Ceramic Tiles
OSB Decking and all other Timber surfaces
Recovery Boards
As a reactivation overcoat primer over ClassicLiquid products if these products require recoating outside of the 48 hours window.


It is essential that the intended substrate is thoroughly cleaned with a high pressure washer, on smaller areas a stiff broom and soapy water and rinse will suffice. Remove all oil, grease and wax contaminants, cement laitance and loose particles.

Make good all cracks and blisters, fill surface irregularities with a suitable product. Allow to fully dry. Apply ClassicLiquid Primer at a sufficient coverage rate to seal the surface. Primer coverage rates will vary depending on surface porosity. Allow the primer coat to fully dry. (approx. 2 hours but is dependent on ambient air temperature and humidity)

Why ClassicLiquid?

  • Very Competitively Priced
  • Fast Curing
  • Single coat (of membrane) application possible
  • Bubble free smooth finish
  • Easy to apply - due to lack of reinforcing fabric
  • Excellent weather & UV resistance
  • Will remain elastic down to 40c
  • Will not soften in high temperatures
  • High tensile and tear strength, excellent abrasion resistance
  • Showerproof in 30 minutes
  • Seamless finish
  • Trafficable in 24 hours


Brand: ClassicLiquid

Coverage: 25sq.m

Guarantee Length: Upto 20 Years

Size: 4L

Delivery - 1 - 5 Working Days

SKU: CL-Primer

 Same day dispatch if ordered before 12pm


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