Frequently Asked Questions

Waste

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Can I use Hunter waste with a competitor’s waste system?

For more information, please see the compatibility table on the Gutter Design page.

What is the requirement for waste trap installation?

Trap sizes up to and including 50mm discharging to soil stacks should have a 75mm water seal. However, a water seal of 50mm is allowed on baths and shower trays, also on spray-tap basins provided they are fitted with flush-grated waste without plugs. But traps discharging to a trapped drain gully may have a 38mm water seal. Trap sizes are to comply with table 4 of BS5572:1994.

For more info, please click here.

Of the two waste systems available (polypropylene and muPVC) which one should I use?

Both systems have their advantages and disadvantages. Check out some of the benefits of the systems below:

MUPVC

Advantages

• Cannot be pulled apart 
• Rigid joints 
• Relatively easy to assemble 
• Permanently watertight
• Can be used externally
• Does not need protection from daylight 

Disadvantages

• Dearer than the polypropylene system 
• Lower impact resistance than PP
• Lower temperature resistance than PP
• Lower chemical resistance than PP

POLYPROPYLENE WASTE SYSTEM

Advantages

• Can be taken apart
• Flexible joints
• Offer expansion to longer waste runs 
• Simple to assemble
• Less expensive than the solvent weld system
• Higher impact resistance than muPVC
• Withstands higher temperatures than muPVC

Disadvantages

• Joints need supporting
• Cannot be used externally without protection from sun (u.v.)

Should I use polypropylene or muPVC for a waste system?

Both polypropylene or muPVC systems have their advantages and disadvantages as illustrated below:

MUPVC
Advantages	Disadvantages
Cannot be pulled apart	More expensive than the polypropylene system
Rigid joints	Lower impact resistance than PP
Relatively easy to assemble	Lower temperature resistance than PP
Permanently watertight	Lower chemical resistance than PP
Can be used externally
Does not need protection from sunlight

Polypropylene Waste System
Advantages	Disadvantages
Can be taken apart	Cannot be used externally without protection from sunlight (u.v.)
Flexible joints
Offer expansion to longer waste runs
Simple to assemble
Less expensive than the solvent weld system
Higher impact resistance than muPVC
Withstands higher temperatures than muPVC