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Impermax SF  SOLVENT FREE   

This is also very fast curing and is a liquid Polyurethane membrane applied with a roller or brush. The System has Full CE Mark, and full ETA (European Technical Approval) and has again the Highest Fire Rating in Europe ( Broof T4 ).

Life Expectancy - 25 Years, - (Independently tested by ETA) Product Warranty 20 Years

Application Method -the System is a 2 x layer system with a total weight of 2.4kg per sq.m with glass fibre reinforcement embedded in the first layer.


Clean – (jet wash) and dry the roof.

Primer-apply the correct primer (see -Table below) and allow the Primer to dry.

Base Coat-Apply 1.2kg per sq.m of  Impermax SF QC (quick cure) and embed the glass fibre reinforcement into this Base Layer. The Cure time is fast-approx 3.5 hours-and you can walk on top of this Base Layer and inspect for any defects such as glass “wicking” or small pin-holes. Correct any defects at this stage in the operation. So, in many ways the System is “idiot proof “. If the Base Layer is correct-then the Top Coat and finish will be perfect. The normal colour of the Base Coat is Light Grey (RAL 7001).

Top coat apply 1.2kg per sqm of Impermax SF dark grey ( Ral 7011 ) on top of the reinforced Base Coat. This Top coat will take approx. 3 hours to dry to give a total membrane weight of 2.4 kg per sqm​.​

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