Its only 60 sq. Its first bigish one i got for them. normally only get the repairs there so hoping it will lead to more.
I find the dpm melts the foam and just makes a mess. I`m normally doing big area`s though, so maybe no problem with smaller areas.
You need these then... http://www.tradediscountshop.co.uk/...y-25cm-adhesives-varnishes-solvent-resistant/
Depth of a a2 notch is 1.5 (might be 1.4mm i use the janser ones )but the tooth width is smaller (f ball call it a 1.5 mm by 3mm) where as the f44 one is 1.5 by 5mm the teeth are further apart. The x mm bits are the centres of the notch so a a2 will have the centre of the 1.5mm notch every 3mm where as the 1.5mm (f44) notch will have it every 5mm. If that makes any sense to anyone