Armaflex Self Seal Class O Insulation 15mm x 9mm

Armaflex Self Seal Class O Insulation 15mm x 9mm

Common Questions

What size Armaflex do I need for 15mm pipe? Go by the outside of the pipe, so 15mm copper or plastic takes this 15mm bore. The 9mm is the wall thickness, the slim option for pipes in heated rooms or tight boxing.

How do I fit Armaflex Self Seal insulation? Make sure the pipe is clean and dry, open the slit over it, pull the backing off the tape strips and press the seam shut working from one end. Butt the lengths tight together and glue the end joints with Armaflex adhesive so there are no cold gaps.

Will this insulation stop cold pipes sweating? It is closed cell foam with its own vapour barrier, so it works on cold pipes as well as hot. Where condensation or frost is the real worry, such as cold lofts or chilled pipes, a thicker 19mm or 25mm wall is the better pick.

Is self sealing pipe insulation worth it? On pipe that is already clipped in place, it is, because it wraps round the pipe and the taped seam sticks shut with no glue. On a brand new run you can slide plain tube on before making the joints and get a finish with no seam at all.

Why insulate pipes? Lagging keeps the heat in hot and heating pipes, so more of it gets to your taps and radiators instead of warming the void. On cold pipes the closed cell foam also helps stop them sweating.

Will Armaflex 15mm x 9mm fit plastic pipe? Yes, 15mm plastic pipe has the same outside size as 15mm copper, so this bore sits snug on PEX or polybutylene too.

Specification

• Material: Closed cell nitrile rubber foam
• Sizes: 15mm x 9mm
• Suitable for: Pipe insulation where a Class 0 fire rating is needed