This reduces labor required to compete the project. Precut joints define only one method of installation application, this assuring that all joints in your cold system are 'staggered' . Inter-locking joints eliminate through joints to the pipe upon installation. Risk of moisture, frost or ice build-up is reduced. Life of sealant is prolonged.
Fittings tend to present the greatest problem area of any installation.
The shiplap on the throat, heel and ends insure against thermal breaks to the pipe. Extol's two piece fittings conform to the shape of the fitting AND the metal or PVC cover. Limitations Lines which cycle on a regular basis from hot to cold should maintain double layer insulation construction to accommodate expansion and contraction coefficients of the insulation material and substrate. Cryogenic systems are excluded.