Armaflex Sheet Insulation – 36 × 48 in
Armaflex sheet insulation to wrap what a tube cannot cover: fittings, valves, pans and flat surfaces.
AirGreen codeAG-IS-00304
514 316-2973 · sales@airgreen.ca
Quick facts
The Armacell Armaflex insulation sheet measures 36 × 48 in and cuts with a knife. It is used to insulate everything tube insulation cannot follow: fittings, service valves, filter driers, large-diameter pipes and cold flat surfaces.
Closing the gaps in a cold line's insulation
On a refrigerant line, heat gain and condensation often show up in the same places: the valve left bare, the uncovered fitting, the elbow where the insulation has slipped. A piece cut from the sheet, glued and overlapping the insulation on the adjacent tubes, closes up these weak spots. The sheet is also used to insulate a pan, a housing or a section of duct.
Five thicknesses
- 1/4 in and 3/8 in: small pieces and fittings next to tubes insulated with 3/8 in.
- 1/2 in and 3/4 in: colder lines and damp locations.
- 1 in: very cold or exposed surfaces.
Cutting and gluing cleanly
Measure the piece, trace the pattern on the sheet and cut in a single stroke with a sharp knife. Glue the edges with Armaflex 520 adhesive without stretching the foam. Outdoors, the foam must be protected from the sun with a suitable coating.
Available from AirGreen, installed by our technicians
Our refrigeration technicians insulate lines, fittings and special parts on their installations in Montréal, Laval, Longueuil, on the South Shore and the North Shore. RBQ licence 5645-9605-01. For availability or a quote, call us at 514 316-2973 or email sales@airgreen.ca with the thickness and the number of sheets.
Custom insulation for awkward shapes
Cut the sheet with a knife to cover a part a tube cannot follow.
- Fittings, service valves, filter driers and other odd-shaped parts
- Large-diameter pipe or duct
- Cold flat surfaces: tanks, housings, panels
- Repairing a damaged section of insulation
5 sizes, one page
Each size has its own AirGreen code. Tap a row to select it.
| Thickness | Part no. | AirGreen code |
|---|---|---|
| 1/4 in | APS14043 | AG-IS-00301 |
| 3/8 in | APS38043 | AG-IS-00302 |
| 1/2 in | APS12043 | AG-IS-00303 |
| 3/4 in | APS34043 | AG-IS-00304 |
| 1 in | APS10043 | AG-IS-00305 |
Sheet thickness. Every sheet is 36 × 48 in.
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Measure the part, trace the pattern on the sheet and cut with a sharp knife.
- Glue the seams with Armaflex 520 adhesive without stretching the foam.
- Overlap the cut piece onto the insulation of the adjoining tubes to avoid thermal bridges.
- Outdoors, protect the foam from sunlight with a suitable finish.
You may also need
Armaflex 520 Insulation Adhesive
Armaflex Foam Insulation Tape – 1/8 × 2 in × 30 ft
Armaflex Elastomeric Tube Insulation – 6 ft Length
Armaflex Elastomeric Insulation Roll – 3/8 in WallInsulationSee all
Frequently asked questions
Which thickness should I choose?
Use at least the thickness of the insulation on the adjoining tubes. On a very cold surface or in a humid space, a thicker sheet limits condensation.
How do I insulate a valve or fitting?
Cut a piece that wraps the valve, glue the edges with Armaflex 520 adhesive and overlap it onto the tube insulation on each side.
How do I get the most out of a sheet?
Trace every piece on the sheet before cutting, starting with the largest. One 36 × 48 in sheet covers several fittings and valves on the same installation.
Can you install it?
Yes. Our technicians insulate fittings and special parts on their installations across Greater Montréal.
Insulate the awkward parts too
Tell us the size and the quantity: we confirm availability and send you a quote. Or let our technicians install it for you.
Specifications from the manufacturer’s documentation, checked on October 7, 2026.