Underfloor Heating RAMS — Wet Systems — Generate in Minutes
Generate comprehensive RAMS for wet (hydronic) underfloor heating installation. Covers insulation boards, pipe loop laying, manifold connections, pressure testing before screeding, screed protection, controls installation, and commissioning — aligned with CDM 2015 and the Water Supply Regulations. Used by plumbing and heating subcontractors on residential and commercial projects throughout the UK.
What a Wet UFH RAMS Covers
- Underfloor insulation installation — rigid boards and pipe staple systems
- Pipe loop layout planning and installation procedures
- Manifold installation, connection, and balancing
- Pressure testing before screed (6 bar or 1.5× working pressure)
- Screed protection and minimum cure period procedures
- System commissioning — graduated heat-up protocol (max 5°C per day rise)
- Boiler and heat pump connection method statements
Regulatory Framework
- CDM 2015 — construction phase management
- Water Supply (Water Fittings) Regulations 1999 — installation and testing
- Building Regulations Part L — conservation of fuel and power
- COSHH Regulations 2002 — jointing compounds and flux
- Gas Safe Regulations — if gas boiler connection is in scope
Frequently Asked Questions
- What pressure testing is required before screeding?
- Test to 6 bar (or 1.5 times working pressure) for 30 minutes, then reduce to working pressure and leave pressurised throughout screed application. Confirm no pressure loss at the end of screed application before pipes can be covered permanently.
- How should commissioning be managed to protect the screed?
- Increase flow temperature by no more than 5°C per day over 5-7 days. Commissioning must only commence after minimum screed cure time (21-28 days for sand-cement screed, or per manufacturer for flowing screeds). Test all thermostats, controls, and safety devices before final operation.
- What manual handling controls apply to UFH installation?
- Insulation board handling on large floors can cause back injury through repetitive bending. Specify kneeling pads for floor-level work, regular breaks, and correct posture training. Pipe rolls can be heavy — specify trolleys for moving large coils across the site.
- What COSHH controls apply to soldering and jointing?
- Flux fumes from copper pipe soldering contain flux chemicals that can cause respiratory irritation. Specify lead-free solder, adequate ventilation during soldering operations, and prohibition on soldering in confined areas without forced extraction. COSHH assessment must reference the specific flux product SDS.
- What screed protection is required after pipe installation?
- Pipe loops must remain pressurised throughout screed application to detect any damage. Screeding must not commence until after the pressure test is satisfactory. Install temporary marker boards at manifold positions and protect manifold enclosures from screed ingress with tape or covers.