Is Epalyn rubber pond liner as good as Butyl?

Epalyn and Butyl rubber liners are both a high quality material. They can both be manipulated into various shapes and sizes. The difference between Epalyn and Butyl liners is the polymer. To be called Butyl the sheet must contain more than 50% butyl polymer. The polymer is the ingredient that makes the sheet elastic. In most pond grade Butyl there is usually a percentage of EPDM polymer mixed in. Epalyn, however is made with 100% EPDM polymer. EPDM polymer is more readily used around the world and so is generally cheaper. It has a higher specification than Butyl in 60% of tests and equal in the remaining 40%:

 

Physical Properties
 Epalyn
Butyl
Hardness 65 + 5 IRH   
65 + 5 IRH
Modulus at 300% Elongation
 min 4.5 Mpa           min 4.5 Mpa       
Tensile Strength
 min 9.0Mpa
 min 7.5 Mpa
Elongation at Break
 min 300% min 300%
Tear Strength
 min 30 kN/m min 20 kN/m
Properties after heat ageing 168h/1210C    
Tensile Strength min 7.5 Mpa
 min 6.0 Mpa
Elongation at Break min 300%
 min 200%

Ozone Resistance 96h/300C/50 pphm and 80% elongation

No cracks

 No cracks
Brittle Point
max -400C
 max -300C

 

Like to buy Epalyn Pond Liner? 

Go to our pond liner size calculator to insert your pond dimensions to get the exact measurements and then place your order.