BlazeMaster® Fire Protection Systems is designed for easy installation in just about any conditions. However, there are several issues to keep in mind when installing in cold temperatures:
- The pipe and fittings may be more fragile.
- Solvent cement may gel or thicken.
- Cure times are longer.
With a few basic precautions, you can install CPVC pipe and fittings when temperatures fall as low as -18 C (0 F).
Design for Success
A successful cold weather installation starts at the design phase with steps to accommodate expansion and contraction. CPVC pipe will contract in the cold conditions then expand once the building is heated. This stress on the pipes can be reduced by incorporating a change of direction to accommodate movement of the pipe. You can also install a fixed expansion loop. Always refer to the manuals provided by BlazeMaster CPVC manufacturing partners for detailed information.
Choose the Right Cutting Tools
Because pipe and fittings may be fragile in cold weather, avoid using a ratchet cutter that puts pressure on the pipe and may cause cracks. A wheel cutter is a safer option. For best results, use wheels designed for use with plastic. This is a best choice regardless of temperature.
Keep Materials As Warm and Dry As Possible
Store the pipe and fittings in a covered, warm area, if at all possible. Ideally you can store everything in the same place because the pipe and fittings must be the same temperature before applying solvent cement. Consider prefabricating as much of the system as possible in a heated space.
If the pipe and fittings have been exposed to the elements, be sure to remove ice, snow and moisture before cutting and installing. Take extra caution not to drag or drop the pipe because it is more fragile when cold. Also, take an extra look to make certain there are no cracks or gouges.
Solvent cement also requires special handling in cold temperatures. It must be stored to the manufacturer’s specifications to ensure it will perform properly. If it freezes, it must be discarded. If there is not a warm spot to store the solvent cement, use an insulated storage bag. Some contractors place disposable hand warmers into an insulated container to keep the solvent warm. You can also wrap the can in a foam beverage can jacket.
Plan for Longer Cure Times
When cold, the CPVC is more resistant to solvent penetration. As a result, it will take longer for solvents to penetrate and soften the pipe and fitting surfaces. That means it will take longer to cure (harden). If a system is pressure tested too soon, it can cause leaks. Consult the manufacturer’s manual to ensure you allow enough time.
If you have questions as you plan a cold weather installation, please feel free to email or call (+44 (0)7710 372281). We look forward to helping you.
