Component A
At −18 °C the joint moves all year. Use Component A: class I adhesion, closed cell 85–92%, shrinkage under 1.5%.
See specificationCold rooms
Insulating cold rooms where panels do not fit
A cold room is judged at the joints and the penetrations, not on the panel face. That is exactly where one-component foam earns its place.
What goes wrong on site
Three failures, in the order they appear
- 01
Cold leaking at panel joints and pipe penetrations — the panel is fine, the seam is not.
- 02
Adhesion fails at low temperature on a damp substrate.
- 03
Open-cell foam absorbs water, freezes, and stops insulating.
Why one-component foam, and not something else
Three properties, no chemistry
- Mobility: a can and a gun reach a joint that a panel, a board or a truck cannot.
- Irregular geometry: it expands to the shape of the void, including penetrations.
- Closed cell: air barrier and moisture barrier in one pass, without a second trade.
How it is done, and what to hold
The four numbers this job lives on
| Step | What to hold |
|---|---|
| Surface | Panels dry and above 5 °C, joints free of frost and release agent; mist the joint before filling. |
| Fill volume | One third of the joint depth. The foam expands to fill; filling it to the top bends frames and wastes material. |
| Passes | Two passes of 30 mm at most. A single thick pass traps heat and collapses in the core. |
| Trim | Cut after the window on the parameter card. Never pull or press uncured foam. |
| Cover | PU is not UV-stable. Any exposed face gets sealant, render or a trim within 48 hours. |
Typical guidance. The parameter card for your grade carries the tolerances your operators work to.
Common failures
Three ways this job goes wrong
- Filling the joint flush — the foam expands and bows the panel edge.
- Skipping the water mist in a dry cold store: the core stays uncured for days.
- Using an economy grade at a penetration and calling it sealed.
What to tell your customer
Three sentences you can copy into a quotation, a WhatsApp message or a site meeting. Your competitors' websites talk about themselves; this block is for you to talk about the job.
„The joints are filled with closed-cell foam, then sealed — that is where a cold room actually loses its cold.“
„Every pipe penetration is filled and sealed separately, not foamed over.“
„The foam is trimmed and covered, so it does not sit exposed to UV.“
Send the drawing or the photo — we will reply with the parameters.
Technology brand
Tell us the joint, the substrate and the season
- 1 tonne minimum, five 200 L drums
- SDS, COA and Form E with every shipment
- We reply within 24 hours, Monday to Saturday.